Most Download articles

    Published in last 1 year| In last 2 years| In last 3 years| All| Most Downloaded in Recent Month | Most Downloaded in Recent Year|

    Published in last 1 year
    Please wait a minute...
    For Selected: Toggle Thumbnails
    The locality and adaptability of human settlements in the Yellow River Basin: Challenges and opportunities
    WANG Fang, MIAO Chang-hong, LIU Feng-gui, CHEN Xing-peng, MI Wen-bao, HAI Chun-xing, DUAN De-gang, WANG Jin-ping, ZHANG Zhan-cang, WANG Cheng-xin
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 1-26.   DOI: 10.31497/zrzyxb.20210101
    Abstract511)   HTML29)    PDF (10349KB)(352)      

    Due to the particularity of natural environment and geographical location, the human settlement environment of the Yellow River Basin is in a complex process of constant changes and is always facing severe challenges. The coupling process of human environment space with natural and social elements originates from the dynamic, comprehensive and systematic adaptation mechanism presented in the process of human-land relationship change, so revealing the system adaptation mechanism is the key to solve the human environment dilemma in the Yellow River Basin. Therefore, based on the perspective of "locality and adaptability", this paper invited experts and scholars from Qinghai, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong along the Yellow River and other provinces. They interpreted the characteristics of human settlements in the Yellow River Basin from the perspectives of natural geography, social economy, urban and rural development, and heritage protection, and sought sustainable strategies to adapt to China's new urbanization path. The main points are stated as follows: On the whole, the adaptability of human settlements in the study area has multi-scale spatial correlation and historical geographic dependence. The Yellow River Basin has an important ecological function, but the natural environment in different regions is facing such problems as land salinization, soil erosion and pollution, etc., so it is necessary to promote the greening of human-land coupling relationship. The Yellow River Basin, especially the cities along the upper reaches of the river, have distinct characteristics of openness, ethnic cultural diversity and integration. Due to the complex natural environment, caves and other special settlements have been formed in the middle and upper reaches of the Yellow River. In the process of rapid urbanization, they are faced with transformation and disappearance, retaining the cultural genes of traditional settlements, and it is urgent to classify and treat them differently to promote their healthy evolution. The internal and external radiation drive of urban agglomeration in the Yellow River Basin is the foundation of high-quality development throughout the river basin, and the optimization and upgrading of urban structure is an important way to promote high-quality development. To achieve sustainable development, scientific and technological innovation and industrial structure transformation and upgrading are also needed.

    Table and Figures | Reference | Related Articles | Metrics
    Urban agglomeration and industrial transformation and development in the Yellow River Basin
    DENG Xiang-zheng, YANG Kai-zhong, SHAN Jing-jing, DONG Suo-cheng, ZHANG Wen-ge, GUO Rong-xing, TAN Ming-hong, ZHAO Peng-jun, LI Yu, MIAO Chang-hong, CUI Yao-ping
    JOURNAL OF NATURAL RESOURCES    2021, 36 (2): 273-289.   DOI: 10.31497/zrzyxb.20210201
    Abstract478)   HTML20)    PDF (1885KB)(214)      

    Ecological protection and high-quality development of the Yellow River Basin is one of the major national strategies, in which urban agglomeration and industrial transformation development are the intrinsic requirements and fundamental guarantees. Thus, revealing the path of the river basin scale urban agglomeration development and industrial transformation and upgrading is of great significance to guide the high-quality development of the Yellow River Basin. Therefore, this paper brings together scholars from the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Research Institute for Eco-civilization, Chinese Academy of Social Sciences, Yellow River Institute of Hydraulic Research, Capital University of Economics and Business, Peking University and Henan University, to discuss key issues on urban agglomeration and industrial transformation development in the Yellow River Basin from the perspectives of ecological protection, resource allocation, dynamic evolution, spatial structure, and integration and regulation. This paper aims to serve the major national stragety of ecological protection and high-quality development of the Yellow River Basin. The core views are as follows, regulating the relationship among water resources, urban agglomeration and industrial development is the key to promoting the coordination of industrial transformation and urban transformation, and the synchronized advances of economic transformation and social transformation;the analysis of the complex coupling and dynamic evolution mechanism of river basin ecological protection and high-quality development is of great significance for achieving high-quality development of the basin; it is an effective way to promote the high-quality development of the basin to reveal the evolution mechanism of typical urban agglomeration and industrial space and to construct the spatial integration target and mode of urban agglomeration and industrial transformation development; under the background of increasing uncertainty of trade caused by globalization and energy revolution, complex relationship between social economy and ecological environment, and the construction of a new development pattern of "dual circulation", the basin urgently needs a more comprehensive integrated regulation mechanism.

    Table and Figures | Reference | Related Articles | Metrics
    The degree and influencing factors of household food waste in China from the perspective of food conversion: An empirical analysis based on CHNS database
    LI Feng, DING Yuan-yuan, CAI Rong
    JOURNAL OF NATURAL RESOURCES    2021, 36 (4): 811-826.   DOI: 10.31497/zrzyxb.20210401
    Abstract234)   HTML16)    PDF (1148KB)(205)      

    The food supply in China has been adequate and stable for a long time and China has made remarkable achievements in food security which is proved to be true. However, this situation has been challenged by population growth and environmental degradation in recent years. On the one hand, the large population in China is still growing, which makes enormous demands on food supplies. On the other hand, grain production is constrained by resources and the environment, and importing foreign food excessively will squeeze domestic agricultural production. Therefore, the best way to ensure food security in China is to reduce food waste. As an important part of the consumption, households account for a large proportion of food waste production sector, which deserves our attention. What is the current situation of household food waste in China and what factors will affect household food waste in China are worth considering. From the perspective of food conversion, the food waste rate in this paper is defined as the proportion of family food consumption that is not normally converted to body mass index of family members. This paper uses data from China nutrition and health survey (CHNS) and applies stochastic frontier model to estimate household food waste rate from the perspective of food conversion and discusses the impact of heterogeneous family characteristics (such as household size, household structure, household income, storage condition, regional factors, the characteristics of the head of the household and the characteristics of the main female member) on food waste. The result shows that: the average household food waste rate is about 11.28%; such a family is likely to waste more, which has a small size, more children or the elderly, a higher per capita annual income, less-educated head of household, female with higher-education or have jobs, a bad grasp of dietary knowledge, and the family lives in Southern China. Therefore, it is of great importance to encourage the production of small packaging food and small cooking utensils, instruct household members to purchase food according to the actual needs, strengthen the efforts of the government, and raise the awareness of school children and their parents about food security so as to reduce food waste.

    Table and Figures | Reference | Related Articles | Metrics
    Characteristics of extreme precipitation over the Qinghai-Tibet Plateau from 1961 to 2017
    MA Wei-dong, LIU Feng-gui, ZHOU Qiang, CHEN Qiong, LIU Fei, CHEN Yong-ping
    JOURNAL OF NATURAL RESOURCES    2020, 35 (12): 3039-3050.   DOI: 10.31497/zrzyxb.20201218
    Abstract397)   HTML16)    PDF (3935KB)(190)      

    Using the daily precipitation data of the long-term series of meteorological stations on the Qinghai-Tibet Plateau, the percentile threshold method is used to determine the extreme precipitation threshold, calculate the extreme precipitation index and analyze its spatial and temporal distribution characteristics, in order to provide reference for regional climate change prediction and disaster prevention and mitigation countermeasures. The results show that: (1) From 1961 to 2017, the annual precipitation of Qinghai-Tibet Plateau showed an upward trend, with a rate of 8.06 mm/10 a, and the average annual precipitation reached 472.36 mm. The minimum precipitation tendency rate of 78 stations is -25.46 mm/10 a, and the maximum value is 43.02 mm/10 a. The precipitation of 15.38% of the stations is decreasing, which is mainly distributed in the east and south of the plateau, and the precipitation of the remaining 84.62% of the stations is increasing. (2) The average threshold value of extreme precipitation in the Qinghai-Tibet Plateau is 23.11 mm, with error values ranging from 7.84 mm to 51.90 mm. The high value centers are located in Gongshan and Muli of Hengduan Mountains, while the low value centers are located in the northern flank of Qaidam Basin and Kunlun Mountains. (3) The extreme precipitation, the number of days of extreme precipitation and the contribution rate of extreme precipitation at all the stations in the Qinghai-Tibet Plateau show an obvious upward trend. Although the intensity of extreme precipitation is also rising, the trend is not obvious, which shows that the increase of extreme precipitation in the plateau is not caused by the intensity of extreme precipitation, but by the increase of the frequency of extreme precipitation. Although the extreme precipitation and days of extreme precipitation in the Qaidam Basin do not show a high value level, the contribution rate of extreme precipitation is larger, which suggests that although there is less precipitation, extreme precipitation events frequently occur in this area.

    Table and Figures | Reference | Related Articles | Metrics
    China's urbanization SD modelling and simulation based on land use
    CAO Qi-wen, GU Chao-lin, GUAN Wei-hua
    JOURNAL OF NATURAL RESOURCES    2021, 36 (4): 1062-1084.   DOI: 10.31497/zrzyxb.20210419
    Abstract168)   HTML8)    PDF (4607KB)(180)      

    China is still experiencing the process of rapid urbanization. How will cultivated land and ecological land, such as woodland, grassland, and water body change? Will construction land continue to grow rapidly? These are not only the concerns of national macro-policy makers, but also the specific problems faced by scholars and ordinary people. This paper attempts to make a multi-scenario analysis of the above issues by constructing a system dynamics (SD) model of China's urbanization based on land use. This SD model integrates the relationship between land use and multi-factors in the urbanization process, including economy and population, and highlights the dominant role of land resources in the urbanization process. The conclusions can be drawn as follows: First, according to the results of stock-flow validation and sensitivity analysis, the China's urbanization SD model based on land use is effective with great reliability and stability. Therefore, the model can be used to predict and simulate the future trend of urbanization process and land resource use in China. Second, in order to meet the requirement of the "National Land Planning Outline (2016-2030)" that the amount of cultivated land should be maintained at 12166.67×104 hm2, there will be a need to supplement 83.17×104-412.67×104 hm2 of cultivated land from other types of land by 2050. This is because the cultivated land will show a decreasing trend in the China's urbanization in the future. In the low scenario, medium and high-speed economic growth, the amount of cultivated land by 2050 will be reduced to 12366.60×104, 12083.50×104, and 11754.00×104 hm2, respectively. Third, with the improvement of urbanization levels, the total amount of construction land will increase accordingly. Specifically, if China's urbanization level reaches 78% by 2050, the total construction land will increase to 4283.89×104-4464.90×104 hm2, with a net increase of 155.87×104-342.88×104 hm2 compared with 2020. Fourth, the overall trend of ecological land in 2020-2050 is to increase first and then decrease. By 2050, the woodland will significantly increase to 29406.60×104-30733.80×104 hm2, the grassland will decrease to 25784.50×104-27809.90×104 hm2, and the water body will not decrease and even increase slightly, the area of which would be 4283.89×104-4464.90×104 hm2. The research results can provide scientific supports for the multi-scenario simulation, evaluation, and decision-making of territorial spatial planning.

    Table and Figures | Reference | Related Articles | Metrics
    Analyzing the carbon metabolism of "Production-Living-Ecological" space based on ecological network utility in Zhaotong
    DU Jin-shuang, FU Jing-ying, HAO Meng-meng
    JOURNAL OF NATURAL RESOURCES    2021, 36 (5): 1208-1223.   DOI: 10.31497/zrzyxb.20210510
    Abstract171)   HTML4)    PDF (2653KB)(171)      

    Analyzing the carbon metabolism process of "Production-Living-Ecological" space could contribute to achieving the regional elements integration and structure optimization of "Production-Living-Ecological" space, which could help to strive for green and low carbon development. Taking Zhaotong as an example, this research systematically analyzed the spatial and temporal distribution of carbon metabolism in "Production-Living-Ecological" space from 2010 to 2018 through calculating vertical carbon flux between urban system and atmosphere, and building horizontal carbon flows model between components of the urban system. Besides, ecological network analysis was used to evaluate the comprehensive ecological effects of the "Production-Living-Ecological" space evolution on urban carbon metabolism. The results suggested that: (1) The vertical net carbon flux and the horizontal net carbon flows in Zhaotong from 2010 to 2018 were both negative, which indicated that "Production-Living-Ecological" space evolution had a negative influence on the urban carbon metabolism balance, resulting in an increase in carbon emissions. (2) The main ecological relationship of "Production-Living-Ecological" land in carbon metabolism system was restrictive and predatory relationship. Ecological spaces were occupied by living spaces and production spaces, leading to the imbalance of carbon metabolism. (3) The value of whole ecological utility function J was 0.85 (< 1), showing that the comprehensive effect of "Production-Living-Ecological" space pattern change on urban carbon metabolism was negative. This result was consistent with the inference of net carbon flows calculations. The study results can provide theoretical and data basis for the optimization of land space utilization and low-carbon transition in the study area, as well as decision-making support for the development of "Production-Living-Ecological" space.

    Table and Figures | Reference | Related Articles | Metrics
    Spatio-temporal characteristics of cold wave in the middle and lower reaches of the Yangtze River between 1958 and 2015
    WANG Ke-yi, LIU Yuan, LIU Bu-chun, QIU Mei-juan, YANG Xiao-juan, ZHANG Yue-ying, WU Xin-yue, XIAO Nan-shu, PANG Jing-yi
    JOURNAL OF NATURAL RESOURCES    2020, 35 (12): 3029-3038.   DOI: 10.31497/zrzyxb.20201217
    Abstract402)   HTML14)    PDF (5325KB)(170)      

    The daily cooling rate of station was calculated based on daily minimum temperature data of 54 meteorological stations in the middle and lower reaches of the Yangtze River from 1958 to 2015. A quantitative analysis of the evolutionary characteristics and spatial changes of cold wave occurrence and development was conducted in the region. The results showed that in the past 58 years, the frequency of cold wave presented an insignificant decrease trend with an average of 1.2 times/station (P>0.05). During cold wave processing, the spatial distribution of average difference of the minimum temperature was higher in the south and lower in the north; and the extreme of average difference of the minimum temperature gradually decreased from the regional center to the surroundings. The first cold wave occurred on August 1 (Jiujiang), and the last on May 4 (Shouxian and Lu'an). The spatial distribution of the time difference was significant. The frequent cold waves occurred in winter, followed by spring and autumn.

    Table and Figures | Reference | Related Articles | Metrics
    The grain production space reconstruction in China since the reform and opening up
    ZHANG Qiu-meng, YANG Fang-she, LI Fei
    JOURNAL OF NATURAL RESOURCES    2021, 36 (6): 1426-1438.   DOI: 10.31497/zrzyxb.20210606
    Abstract110)   HTML6)    PDF (3157KB)(165)      

    Grain production space reconstruction not only concerns China's food security, but also has a profound impact on regional economic development and ecological protection. From three dimensions of quantity, production potential and spatial pattern, the paper employs GAEZ (Global Agro-Ecological Zones) model, landscape pattern index and gravity center model to discuss the grain production space reconstruction of China from 1980 to 2018. Studies have shown that: (1) In terms of quantity, grain production space gradually decreases from south to north, and the total area remains almost unchanged, but it has frequent internal conversion. The grain production space has been transformed into other land use types, amounting to about 64.58 million hm2, of which the Grain for Green and construction land expansion account for roughly 90%. The other land use types have been converted into grain production space, reaching 66.8 million hm2, of which deforestation and grassland reclamation account for 75%. (2) From production potential, the total amount showed decreasing trends in the past 40 years, while the spatial distribution presents a pattern of "high in the east and low in the west", showing an obvious gradient difference from east to west. The decrease of total production potential of grain production space was mainly caused by the Grain for Green and construction land expansion, resulting in the decrease of grain production space with medium-low, medium and medium-high potential levels; However, its total increase was mainly attributed to the deforestation and grassland reclamation, leading to an increase of grain production space with medium and medium-high potential levels. (3) Due to the aggravation of human activities, the landscape pattern of China's grain production space has undergone significant changes since the 1980s. Its scale gradually decreased, the shape tended to be complex, and the distance gradually became far. Meanwhile, the quantity gravity center has moved southward, but not too far. The gravity center of its production potential has been moving to the northeast, with a distance of 82.74 km. This paper enriches the research setup of land system, and provides the basis for guaranteeing food security and realizing food production space's sustainable and intensive use.

    Table and Figures | Reference | Related Articles | Metrics
    The "Double Evaluation" under the context of spatial planning: Wicked problems and restricted rationality
    HAO Qing, DENG Ling, FENG Zhi-ming
    JOURNAL OF NATURAL RESOURCES    2021, 36 (3): 541-551.   DOI: 10.31497/zrzyxb.20210301
    Abstract598)   HTML25)    PDF (974KB)(154)      

    Resources and environment carrying capacity evaluation and spatial development suitability evaluation (referred to as "Double Evaluation") are considered as scientific basis and developing constraints of spatial planning. This paper analyzes and summarizes the "Double Evaluation" work in current spatial planning. The "Double Evaluation" plays an active role, but it has many problems, including insufficient recognition on the scientific nature and internal mechanisms of resources and environment carrying capacity and spatial development suitability, imperfect evaluation methods and application system, and so on. This paper intends to put forward the realistic needs of spatial planning under the concept of ecological civilization. And it is necessary to improve the scientific logic, technical logic and application logic of "Double Evaluation", so that we can improve the scientificity and practicability of "Double Evaluation". At the same time, it should be recognized that essential problems of spatial planning are wicked problems as "Double Evaluation" can only play a limited rational role. We should solve such problems through communication and cooperation so as to avoid falling into the misunderstanding of technical rationality.

    Table and Figures | Reference | Related Articles | Metrics
    Spatio-temporal changes of the coupling relationship between urbanization and ecosystem services in the Middle Yellow River
    ZHAO Xue-yan, DU Yu-xuan, LI Hua, WANG Wei-jun
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 131-147.   DOI: 10.31497/zrzyxb.20210109
    Abstract247)   HTML5)    PDF (9010KB)(144)      

    Urbanization is an important factor affecting the pattern of regional ecological security. Clarifying the relationship between urbanization and ecosystem services can provide decision-making references for promoting ecological protection and high-quality development in the Middle Yellow River. Based on the analysis of the spatio and temporal patterns of urbanization and ecosystem services in the Middle Yellow River from 2000 to 2018, the study uses the coupling coordination degree model to analyze the spatio-temporal characteristics of the coupling relationship between urbanization and ecosystem services in the study area. The results show that between 2000 and 2018, the comprehensive urbanization level increased by 72.24%, and the spatial distribution was generally "high in the south and low in the north", with economically developed counties decreasing outward. Grain production, water resource conservation, soil conservation and carbon sequestration services all showed an increasing trend in different spatial distribution trends. Generally, the degree of coupling coordination between grain production, water resource conservation, soil conservation and carbon sequestration services and comprehensive urbanization level is on the rise, but the degree of coupling coordination in the Fenhe-Weihe Plain is low, while that in economically developed counties is high.

    Table and Figures | Reference | Related Articles | Metrics
    Coupling relationship and interactive response between ecological protection and high-quality development in the Yellow River Basin
    LIU Lin-ke, LIANG Liu-tao, GAO Pan, FAN Chang-sheng, WANG Hong-hao, WANG Han
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 176-195.   DOI: 10.31497/zrzyxb.20210112
    Abstract314)   HTML9)    PDF (3237KB)(139)      

    Based on the analysis of the coupling mechanism of ecological protection and high-quality development, the provincial unit is taken as the research unit to evaluate the coupling coordination degree of ecological protection and high-quality development of the Yellow River Basin, compared with the Yangtze River Economic Belt. Finally, the panel VAR model is used to quantitatively analyze the interactive response relationship between ecological protection and high-quality development in the Yellow River Basin. The main conclusions are as follows: (1) During the study period, both the ecological protection index and the high-quality development index of the Yellow River Basin showed an increasing trend, and the overall pattern of the middle and lower reaches was higher than that of the upper reaches. (2) The coupling coordination degree of ecological protection and high-quality development in the Yellow River Basin showed an overall increasing trend. Among them, the coupling coordination degree from 2003 to 2011 was less than 0.5, which was an antagonistic stage; in 2012-2017, the coupling coordination degree is between 0.5-0.7, which belongs to the run-in stage. The metropolis in the Yellow River Basin presents a spatial pattern of downstream > middle reaches > upstream, with the highest coupling coordination between Shandong and Shanxi at the provincial level, and the lowest coupling coordination between Ningxia and Qinghai. (3) The ecological protection index of the Yellow River Basin is slightly higher than the national average. The high-quality development index and the coupling coordination degree are lower than the national average. The ecological protection index of the Yellow River Basin in the early stage (2003-2009) is lower than that of the Yangtze River Economic Belt, while it is higher in the later period (2010-2017). The high-quality development index and coupling coordination degree are lower compared with the Yangtze River Economic Belt in all the years. (4) Both the ecological protection and high-quality development of the Yellow River Basin have positive progressive effects and inertial development characteristics, and their effects on themselves are declining year by year, and the degree of attenuation of high-quality development is more obvious. The ecological protection and high-quality development of the Yellow River Basin play a positive role in promotion, but due to the overall low level of ecological protection and high-quality development and uneven internal development, the mechanism of action of the two is not significant.

    Table and Figures | Reference | Related Articles | Metrics
    Variation of grain sizes for surface sediments of Fozhang dune in Yarlung Zangbo River Valley
    PAN Mei-hui, YANG An-na, WU Yong-qiu, MA Jian-jun, XUE Wen-xuan
    JOURNAL OF NATURAL RESOURCES    2020, 35 (12): 3076-3088.   DOI: 10.31497/zrzyxb.20201221
    Abstract288)   HTML12)    PDF (3500KB)(139)      

    Mountain rivers are generally featured by deep-cut river valley and steep side slopes, which is prone to landslide-dammed lake and outburst floods. Taking 2018.10.10 Baige landslide-dammed lake in Jinsha river as an example, wind reworked the outburst flood sediments and developed a plenty of sand dunes at the bank of Jinsha river. This studies about aeolian dunes in the Yarlung Zangbo River, to some extent, could provide some implication for the sedimentary distinction of aeolian sand and original flood deposit, and has some significance for engineering control of aeolian dune in this region. In this paper, a slope climbing dune in the floodplain of the middle and lower reaches of Yarlung Zangbo River, we analyzed the grain size characteristics and and spatial differentiation of surface sediments on four overlapping crescent-shaped dunes of a climbing dune, named Fozhang dune in the lower Yarlung Zangbo. The results of particle size analysis show that frequency distribution curves of the surface sediment of Fozhang dune, dominated by poorly sorted medium sand, is extremely positive biased and narrowly peaked. In the case of four individual superimposed crescent-shaped dune, the coarsest and best sorted particle fraction emerges at the top of the slope. On the whole, the surface sediment of Fozhang dune has become finer and better sorted towards the crest, which results from the combined sorting of wind and gravity. The grain size characteristics of Fozhang dune is comparable to other aeolian dunes of similar genesis. However, Sahu criterion indicates that the Fozhang dune is fluvial-originated. Maybe Sahu criterion cannot identify aeolian sand of very proximal material source from river floodplain. The comparison of grain size characteristics of sand samples with those of floodplain suggests that Fozhang dune is mainly provided with sand source by materials carried by rivers.

    Table and Figures | Reference | Related Articles | Metrics
    The relationship between supply and demand of ecosystem services and its spatio-temporal variation in the Yellow River Basin
    LIU Jing-jing, WANG Jing, DAI Jian-wang, ZHAI Tian-lin, LI Ze-hui
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 148-161.   DOI: 10.31497/zrzyxb.20210110
    Abstract239)   HTML9)    PDF (2968KB)(138)      

    Based on the calculation of the ecosystem service supply, demand and coordination degree in the Yellow River Basin, we comprehensively analyzed the co-variation trend of land spatial pattern and coordination degree of supply-demand in this basin. Then, correlation analysis and quantile regression were used to analyze the influence of various land spaces on the coordination degree of supply-demand, and its regional heterogeneity. The results showed that: (1) Land spatial pattern, and supply and demand of ecosystem services showed significant spatio-temporal differentiation. The upper and middle reaches of the river and the lower reach are areas with densely distributed and significantly increased productive land and living land from 2000 to 2015. The increase in supply of ecosystem service was consistent with the distribution of cultivated land and forest land, and that in demand of ecosystem service was consistent with the distribution of population density and construction land. (2) The spatio-temporal change of the coordination degree was affected by the evolution of land spatial pattern. The influence of the land spaces on the coordination degree of supply and demand was different under different coordination levels, and there was significant regional heterogeneity in different regions. (3) According to different land spaces that had an impact on the coordination degree, different areas should rationally lay out land space and formulate development policies to promote effective ecosystem management.

    Table and Figures | Reference | Related Articles | Metrics
    Research on driving mechanism of ecological land loss based on Bayesian network
    ZHENG Tao, CHEN Shuang, ZHANG Tong, XU Li-ting, MA Li-ya
    JOURNAL OF NATURAL RESOURCES    2020, 35 (12): 2980-2994.   DOI: 10.31497/zrzyxb.20201213
    Abstract229)   HTML10)    PDF (4435KB)(129)      

    From the micro perspective, the driving factors of ecological land loss in urban riverside area are analyzed, especially based on the quantitative analysis of the factors with crucial influences such as policy and planning, which has important reference significance for the formulation of ecological land protection policies. In this paper, the Bayesian network model is used to integrate the neighborhood factors, natural factors, policy and planning factors that lead to ecological land loss. And the relationship between ecological land change and its driving factors is clearly illustrated by a good graphical description method. The research results show that from 2005 to 2018, about 11.0% of the ecological land in Nanjing riverside area is lost, and the stable proportion of ecological land is 89.0%. The sensitivity of ecological land protection intensity to ecological land loss is as high as 9.37%, the sensitivity of construction potential factor is 2.53%, and the sensitivity of development difficulty is only 0.21%. The effect of shoreline planning is better than that of land use planning, which indicates that the protection policy based on the function goal of ecological land should be made to ensure the long-term existence of ecological space.

    Table and Figures | Reference | Related Articles | Metrics
    The historical evolution of urban settlements and man-land coupling in Wuding River Basin
    TONG Biao, DANG An-rong, ZHOU Hong-yu
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 38-54.   DOI: 10.31497/zrzyxb.20210103
    Abstract253)   HTML4)    PDF (5798KB)(123)      

    The Wuding River Basin, located in the Loess Plateau of the middle reaches of the Yellow River, is a typical transitional zone and ecologically fragile area in history. Based on the analysis of the historical development process of urban pattern and the coupling relationship between human and land in this process, this paper puts forward the countermeasures and suggestions for the future urban development and ecological protection of the basin in combination with the current situation of urban development. The main findings are as follows: the development and evolution of the urban hub area in the basin was bow shaped in the Tang Dynasty and before, when the natural conditions were better, and the urban spatial layout was mainly based on natural factors; the hub area after the Tang Dynasty presented a triangle pattern, and the urban spatial layout was mainly based on human factors; the contemporary urban pattern of the basin inherited the context of historical development, but the driving force of urban development was mainly based on resources along the Great Wall. The human activities have an impact on the vegetation coverage in some areas; at the same time, the ecological protection policies, such as returning farmland to forests, wind prevention and desertification control, have exerted positive effects. It is suggested that the development of the river basin should be reasonably determined and concentrated around the main cities and towns in combination with the national strategic positioning and regional ecological environment bearing capacity. In addition, the ecological barrier and key prevention and control areas are constructed with the river as the backbone.

    Table and Figures | Reference | Related Articles | Metrics
    Evaluation of water and land resources system bearing capacity and path optimization for rural revitalization
    QU Lu-lu, WANG Yong-sheng, LIU Yan-sui, MA Qing
    JOURNAL OF NATURAL RESOURCES    2021, 36 (2): 300-314.   DOI: 10.31497/zrzyxb.20210203
    Abstract276)   HTML11)    PDF (4205KB)(120)      

    The balance of water and land resources system in pastoral ecotone is the guarantee for the development of regional farming and animal husbandry. Taking Yanchi county of Ningxia as an example, this paper evaluates the carrying capacity of water and land resources based on matter element model and studies the driving factors affecting the change of carrying capacity of water and land resources, analyses the factors affecting the carrying capacity of water and land resources and their regional differences, and explores the optimization path of dual guidance of economy and society as well as resources and ecology. The results show that: (1) The carrying capacity of water and land resources of Yanchi county presented a symmetrical X-shaped pattern at a medium level and had great potential for development. Huamachi and Huianpu had higher carrying capacity, while Mahuangshan, Wanglejing and Dashuikeng had the lower. (2) There were obvious regional differences in the coupling and coordination of water and land resources in rural areas of Yanchi county in 2018, and the whole study area was in the antagonistic coupling stage. The coupling and coordination degree of towns was relatively high, while that of rural areas was relatively low. (3) There is a lack of synchronization between water resources and land resources utilization. Water resources lagging areas should take water resources adaptive management and control measures and "ecological conservation + water conservation" to protect mountains, rivers, forests, farmlands and lakes in a coordinated way. Land resources utilization lagging areas should actively explore the main function-oriented zoning, dominant type classification and principal purpose classification optimal distribution strategy of land resources in farming and animal husbandry space in combination with land engineering control measures and industrial restructuring. The strategy of synchronous optimization of resources use, ecological protection and socio-economic development based on the balance of water and land resources in rural areas of Yanchi county provides research reference for the development of agricultural transformation and the implementation of rural revitalization program in the pastoral ecotone.

    Table and Figures | Reference | Related Articles | Metrics
    The coupling relationship and spatial characteristics analysis between ecological civilization construction and urbanization in the Yellow River Economic Belt
    GE Shi-shuai, ZENG Gang, YANG Yang, HU Hao
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 87-102.   DOI: 10.31497/zrzyxb.20210106
    Abstract233)   HTML6)    PDF (4686KB)(117)      

    To explore the sustainability of regional development, on the basis of the system coupling collaborative evaluation system, a comprehensive index system suitable for large regions and multi-cities is constructed, which can evaluate the construction of ecological civilization and urbanization. With the help of this index system, the ecological civilization construction and the coupling and coordinated development of urbanization in 80 cities at and above the Yellow River Economic Belt from 2008 to 2016 were evaluated from two dimensions of time and space. Then, the exploratory spatial data analysis method is used to analyze the spatial pattern and spatial relation characteristics of the coupling coordination level in the research area. The empirical results show that: (1) From 2008 to 2016, the ecological civilization construction in the Yellow River Economic Belt did not achieve significant results, and the pressure was still very high, which proves the necessity and urgency of ecological protection and high-quality development in the Yellow River Basin. The overall urbanization had improved, but the entire development rate was still too slow. There was no obvious leading city in both aspects, and the spatial difference was distinct. (2) From 2008 to 2016, the ecological civilization construction and urbanization in the cities of the Yellow River Economic Belt were in a low degree of coupling, the coordination degree was slightly unbalanced, and the ecological civilization construction generally lagged behind the urbanization development. The spatial pattern was characterized by obvious spatial heterogeneity and administrative orientation. (3) The coordination degree of ecological civilization and urbanization in the research area showed a certain spatial dependence and spatial connection, and the coordination degree showed a certain spatial spillover effect, and the geographical adjacent areas were more susceptible to the influence of regions with high coordination degree.

    Table and Figures | Reference | Related Articles | Metrics
    Practical progress and theoretical system construction of natural resources accounting in China
    HE Li, SHEN Lei, ZHANG Wei-min, TAO Jian-ge, FAN Zhen-lin
    JOURNAL OF NATURAL RESOURCES    2020, 35 (12): 2968-2979.   DOI: 10.31497/zrzyxb.20201212
    Abstract179)   HTML6)    PDF (1523KB)(116)      

    Natural resources play a vital role in the economic development of a country. Natural resources accounting has become an important natural resources management tool in recent years, and it is an important part of the natural resource governance system. Natural resources accounting is an effective way to improve the governance capacity of natural resources. SEEA 2012 and SNA 2008 play a crucial role in the theoretical research and accounting practice of natural resources. They are the important theoretical framework of natural resources accounting at home and abroad. In the new era of rapid development of informatization technology, China's balance sheet and resources accounting idea of natural resource asset management promote the construction of China's natural resource governance system and improve China's natural resource governance capacity. At present, in the theory of natural resources accounting, there is still a lack of unified understanding of the accounting framework and method, and in practice, there is also a lack of an effective accounting system. Therefore, it is necessary to systematically analyze the theoretical results of current natural resources accounting and establish the natural resources accounting system in China to guide the practice of natural resources accounting. Based on WSR methodology, this paper studies the theory and literature of natural resources accounting, and considers the establishment of China's natural resources accounting system. The main conclusions of this study are as follows: The natural resources accounting system should systematically analyze the "WSR" of natural resources accounting; based on the "WSR" analysis, the natural resources accounting consists of the national economic accounting of natural resources, the government asset management accounting of natural resources and the enterprise operation asset accounting of natural resources. The national economic accounting of natural resources is helpful for making macro-economic plan and economic decision-making, government asset management accounting of natural resources is helpful for government asset management, and enterprise asset accounting of natural resources is helpful for enterprise natural resource asset management and market element allocation. Based on WSR method, the natural resources accounting system can make wiser choices for accounting purpose, accounting framework, way of realization and accounting method. After a systematic analysis, the construction of accounting theoretical structure of natural resources accounting is helpful to improve the theory and practice, and to solve the divergence in the field of natural resources accounting research.

    Table and Figures | Reference | Related Articles | Metrics
    Discussion on scientific foundation and approach for the overall optimization of "Production-Living-Ecological" space
    JIANG Dong, LIN Gang, FU Jing-ying
    JOURNAL OF NATURAL RESOURCES    2021, 36 (5): 1085-1101.   DOI: 10.31497/zrzyxb.20210501
    Abstract597)   HTML22)    PDF (1273KB)(116)      

    The 18th CPC National Congress in 2012 figured out that the territorial space optimization was the primary task of the ecological civilization construction and to make production space intensive and efficient, living space livable and suitable, ecological space. This study systematically reviews the recent advances for the overall optimization of production space, living space and ecological space (PLES) by the method of literature review and summary induction. It is concluded that the present studies of the overall optimization of PLES were mainly carried out from the perspective of the utilization quality of land space, land suitability evaluation, resource environmental bearing-capacity and comparative advantage. But because of the short of recognition of the scientific intension of PLES and the incompleteness of quantitative identification and classification system construction, there are still problems that the technological approaches of the overall optimization of PLES may still have to overcome. The technological approaches of the overall optimization of PLES should build the theoretical basis and technical system of PLES identification and optimization aiming for Beautiful China Initiative by the theory of human-earth coupled systems. On the theoretical level, the initiative should give full consideration to the mechanism of material and energy transfer within the PLES system and the parsing of the transfer pathway, flow process and metabolic mechanism of water, soil, energy, carbon and other key elements of PLES system by the combination of the resource metabolism theory and the geographical pattern of PLES. On the technological level, it should pay attention to the development and application of the system simulation model and the multi-objective optimization model, and synthetically consider the dynamic mechanism between population, resources, environment and land space elements, and combine the results of evolution rule and the conflict and problem diagnosis of PLES, and consequently to achieve the overall optimization of PLES by the design of different scenarios and parameters.

    Table and Figures | Reference | Related Articles | Metrics
    The spatio-temporal evolution and driving factors of eco-efficiency of resource-based cities in the Yellow River Basin
    YAN Xiao, TU Jian-jun
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 223-239.   DOI: 10.31497/zrzyxb.20210115
    Abstract197)   HTML7)    PDF (3211KB)(114)      

    Eco-efficiency is the comprehensive embodiment of regional development quality, and the synthetic reflection of coordination degree between socio-economic system and environmental system. Taking the Yellow River Basin as the research area, this study explored the spatio-temporal evolution and driving forces of eco-efficiency of resource-based cities. At first, eco-efficiencies of 37 resource-based cities from 2003 to 2017 were evaluated, using the TOPSIS method. Then, the spatio-temporal changing trends were revealed through the Theil index, the Global Spatial Autocorrelation analysis and the Hotspot analysis. At last, the key driving factors of eco-efficiency change were explored by the Panel Tobit Regression model. The results showed that: (1) On the whole, the eco-efficiency of resource-based cities in the Yellow River Basin stabilized first and then increased during 2003 and 2017, with 2007 as the turning point. However, the quantity and rate of eco-efficiency growth varied considerably among resource-based cities. The two indexes of downstream cities were significantly higher than those of middle and upstream cities, and these two indexes of regenerative cities were significantly higher than those of growing cities, grow-up cities and recessionary cities. (2) The eco-efficiency gap between resource-based cities decreased slightly at first and then increased continuously during 2003 and 2017. Meanwhile, the eco-efficiency spatial distribution pattern of resource-based cities evolved from random state to aggregate state. Specifically, the low-value agglomeration areas were distributed at the junction of Shanxi and Henan provinces at first, and then moved upstream to the central and northern parts of Shanxi province. The high-value agglomeration areas, however, remained consistently in Shandong province, which is located in the lower reaches of the Yellow River. (3) In general, industrial transformation, scientific and technological innovation, infrastructure improvement and location conditions had significant positive effects on the improvement of eco-efficiency in the study area. However, export-oriented economy, resource dependence and environmental regulation had significant inhibitory effects, and urbanization, industrialization and foreign capital utilization had no significant impact. It is worth noting that the driving factors of eco-efficiency were heterogeneous across different types of resource-based cities, which means that different resource-based cites should take different measures to improve their eco-efficiencies.

    Table and Figures | Reference | Related Articles | Metrics
    Spatial pattern of agro-product geographical indications in China
    LI Yu-rui, BU Chang-li, WANG Peng-yan
    JOURNAL OF NATURAL RESOURCES    2021, 36 (4): 827-840.   DOI: 10.31497/zrzyxb.20210402
    Abstract189)   HTML8)    PDF (3225KB)(109)      

    Agro-product geographical indications (APGIs) are featured agricultural products with names of local region. Creating APGIs is an important means to develop featured agriculture and promote agricultural supply-side reform, and thus boost agricultural industry development and rural vitalization in the new era. It is of great significance to deeply study the regional differentiation characteristics and socio-economic effects of APGIs. This paper took 2274 APGIs as the main data source, combined with socio-economic data and natural geographic data, discussed the spatial pattern of APGIs in China. The research shows that: (1) Overall there are more APGIs in the east and less AGPIs in the west. It presents a pattern of concentration distribution in the horizontal direction, and shows a decreasing trend with the increase of elevation in the vertical direction. (2) There is a big difference in the number of APGIs between provinces. Shandong province has the most APGIs. The per capita APGIs is high in the provinces inhabited by ethnic groups, and the spatial distribution density is high in the provinces with small area and relatively good natural conditions. In the county-level administrative region, there exists a pattern of "large dispersion and small agglomeration", which is significantly related to the primary industry economic index, but the correlation coefficient is not high. (3) All kinds of APGIs, except tobacco and reptiles, show clustering distribution, among which the clustering effect of melon and fruit crops and aquatic products is the most obvious. (4) Different kinds of products have different geographic adaptation zones. Most APGIs require more than 400 mm precipitation, and at least 1600 ℃ for accumulative temperature above 10 ℃, especially between 3200-6400 ℃. (5) Natural geographical conditions, historical and cultural background, socio-economic development and government behaviors are the main factors influencing the regional differentiation of APGIs.

    Table and Figures | Reference | Related Articles | Metrics
    Research on misuses and modification of coupling coordination degree model in China
    WANG Shu-jia, KONG Wei, REN Liang, ZHI Dan-dan, DAI Bin-ting
    JOURNAL OF NATURAL RESOURCES    2021, 36 (3): 793-810.   DOI: 10.31497/zrzyxb.20210319
    Abstract424)   HTML8)    PDF (1280KB)(106)      

    With the deepening understanding of the Scientific Outlook on Development, the coupling coordination degree model has become an effective evaluation and research tool for the regional overall balanced development. However, for this model, there are four types of misuses, including writing errors, coefficients loss, weight misuses and model failures, which have significantly affected the scientific nature of academic research. Therefore, this study firstly clarified the normative formula of the traditional coupling coordination degree model. On the basis of discussing the validity of the traditional model in the field of social science research, this study further proposed a modified model of coupling degree. In addition, the coupling coordination degree model has three reliability issues: the subjectivity of index construction, and the volatility and incomparability of coupling results. Taking the ecological and economic system of the Beijing-Tianjin-Hebei region as an example, we proved that the modified coupling coordination degree model has better validity, and the spatial and temporal changes of the research object will affect the reliability of the coupled coordination model.

    Table and Figures | Reference | Related Articles | Metrics
    Coupling analysis of land intensive use efficiency and ecological well-being performance of cities in the Yellow River Basin
    XU Wei-xiang, XU Zhi-xiong, LIU Cheng-jun
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 114-130.   DOI: 10.31497/zrzyxb.20210108
    Abstract168)   HTML1)    PDF (3763KB)(106)      

    Correctly handling the relationship between land intensive use efficiency and ecological well-being performance is a special essential prerequisite for promoting ecological protection and high-quality development in the Yellow River Basin. Based on the stochastic frontier analysis model in the form of a translog production function that includes a time trend variable, we measure the land intensive use efficiency and ecological welfare performance of 57 cities in the Yellow River Basin from 2008 to 2017. With the help of a coupling model, distribution dynamic theory and geographical detector tools, in the perspective of cities and provincial levels, the dynamic evolution of the coupling degree between them is described, and the coupling mechanism and driving factors are clarified. The results show that: (1) The land intensive use efficiency of 57 cities has basically remained stable and improved slightly over time, provincial capital cities have gradually formed the first echelon of land intensive use efficiency, but the ecological welfare performance has shown a trend of declining fluctuations. The degree of coupling keeps a high level, taking 2012 as the boundary, it has undergone the evolution process of "decline-rise". (2) The degree of coupling development between cities is uneven, because the coefficient of variation of most provinces is increasing, nearly one fifth of the cities belong to the type of "low level coupling" with low development degree and low coordination degree, although more than half of the cities have achieved the relative synchronization between development and coordination. What's more, the degree of coupling generally presents a spatially differentiated pattern of "northeast-southwest", the center of gravity moves to the southwest as a whole, and its evolution is mainly to maintain the original type and transform to adjacent types. (3) As for the driving factors, the explanatory power of economic dimensions speak louder than that of the natural and social dimensions, that is to say, economies are the leading factors of coupling degree, while social factors and natural factors play roles of support and foundation respectively. The interaction between factors shows the two-factor enhancement and non-linear enhancement effects, and social factors are the main interaction objects.

    Table and Figures | Reference | Related Articles | Metrics
    Spatial and temporal characteristics and influencing factors of urban resources and environmental efficiency in the Yellow River Basin
    LIN Jiang-biao, WANG Ya-juan, ZHANG Xiao-hong, LIU Xiao-peng
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 208-222.   DOI: 10.31497/zrzyxb.20210114
    Abstract205)   HTML2)    PDF (1482KB)(102)      

    Improving urban resources and environmental efficiency is of great significance to the high-quality development of the river basin. This article uses the SBM super-efficiency model based on undesired output and the Malmquist-Luenberger index, the resources and environmental efficiency of cities above prefecture level in the Yellow River Basin in 2000, 2005, 2010, 2015 and 2017 were measured and calculated, and their spatial and temporal characteristics were analyzed in combination with the kernel density function. Finally, the Tobit model is used to measure the main influencing factors of urban resources and environmental efficiency, which is expected to provide a scientific reference for improving the quality and efficiency of the resources and environment of the study area. The results show that the urban resources and environmental efficiency of the Yellow River Basin has generally shown a U-shaped change trend, and the overall level is not high. The number of non-DEA effective cities is much larger than that of DEA effective cities. Urban total factor productivity has shown a downward trend, but efficiency changes and pure technical efficiency changes show an improvement trend; industrial structure and government intervention are positively correlated with resources and environmental efficiency. The level of economic development, urbanization, energy consumption and environmental governance have a negative effect on the resources and environmental efficiency.

    Table and Figures | Reference | Related Articles | Metrics
    Research progress of green infrastructure oriented by landscape planning: From the perspective of "pattern-process-services-sustainability"research paradigm
    LI Kai, HOU Ying, HANS Skov-Petersen, PETER S. Andersen
    JOURNAL OF NATURAL RESOURCES    2021, 36 (2): 435-448.   DOI: 10.31497/zrzyxb.20210213
    Abstract199)   HTML1)    PDF (1369KB)(101)      

    China is in the important period of New-type Urbanization and ecological civilization construction, and introducing green infrastructure planning framework is of great significance in urban development and ecological protection. Based on "pattern-process-services-sustainability" landscape ecology paradigm, this study reviewed Chinese and international research on green infrastructure (GI) in the landscape scale in recent years. Results show that, in terms of the research on GI pattern, landscape pattern metric method is still the most common one. For landscape connectivity, the structural connectivity method such as Morphological Spatial Pattern Analysis has advantages of calculating simplification and high applicability, but it lacks clear ecological meanings. However, the functional connectivity method including graph theory serves specific ecological process, which will be research core in the future. Research on GI process focuses on biological migration based on the theory and method of ecological network, and its planning process can be divided into 3 parts: selection of core areas, construction of resistance surface and identification of potential corridors. In terms of research on GI ecosystem services, biophysical model and economic value model are widely used in the evaluation of regulating, provisioning and supporting services, and cultural services evaluation takes human feeling derived from questionnaire surveys as the basic data. Additionally, research on demand for ecosystem services involves real consumption and preference of ecosystem services, and its quantitative evaluation and planning application should be further explored. In terms of research on GI landscape sustainability, based on identification of the total amount of ecosystem services provided by GI, trade-offs and synergies between ecosystem services have been taken into consideration in GI planning, and scenario planning can simulate dynamics of GI ecosystem services. Finally, landscape sustainability should be set as the ultimate objective of GI planning, and then 4 research prospects were put forward, including: paying attention to basic research on interaction of pattern and process, deepening research on demand of GI ecosystem services, identifying trade-offs and synergies between ecosystem services and connecting GI with practical planning.

    Table and Figures | Reference | Related Articles | Metrics
    Reconstruction of cultivated land pattern in the upper reaches of the Yellow River in the late Northern Song Dynasty:Take Hehuang Valley as an example
    GUO Rong, LIU Feng-gui, CHEN Qiong, ZHOU Qiang, GU Xi-jing, CAI Xiang-cuo-mao
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 27-36.   DOI: 10.31497/zrzyxb.20210102
    Abstract425)   HTML13)    PDF (1460KB)(98)      

    The Hehuang Valley in the upper reaches of the Yellow River is one of the areas with a long history of human activities, and it is the westernmost part of cultivated land reclamation along the Yellow River. The reconstruction of settlements and cultivated land has practical significance for the study of human activities and global change in this basin. In this paper, a database of settlements and cultivated land in the Hehuang Valley in the late Northern Song Dynasty (1117) was established by combing a large number of historical documents. Based on the spatial distribution of settlements, the grid model was used to reconstruct the cultivated land pattern of the study area with an accuracy of 1 km×1 km. The results show that: (1) The settlements in the Hehuang Valley in the upper reaches of the Yellow River in the late Northern Song Dynasty are concentrated in alluvial and proluvial plains along the main stream of the Yellow River and Huangshui River with relatively low altitude and gentle slope, and the "City" is mainly distributed in the mountain pass in the relatively low altitude area, highlighting its defense function; "States and Castles" are mostly distributed along rivers with relatively flat terrain and relatively geo-safe; however, "Villages" are scattered along the tributaries of rivers, showing the characteristics of disorderly development. (2) The total cultivated land area in the Hehuang Valley is estimated to be about 304.67 km2, with only 16.16% of the grids distributed with cultivated land and only 24.16% of the grids with the highest reclamation rate, among which 74.06% are distributed in the Huangshui Valley and 25.94% along the main stream of the Yellow River, indicating that cultivated land reclamation in the late Northern Song Dynasty is mainly concentrated in the Huangshui River Basin. (3) From the altitude of settlement distribution, 78.09% of the cultivated land grids are distributed in the area of flat terrain with water below 2600 m above sea level, and 21.91% of the grids are distributed in the shallow mountains between 2600 m and 3200 m, indicating that the cultivated land range was not large at that time, and the altitude greatly restricted the expansion of cultivated land, which was mainly distributed in areas with superior irrigation conditions. (4) Rebuilding the spatial pattern of cultivated land based on settlement accords with the fact that cultivated land is distributed with settlements, which is more reliable.

    Table and Figures | Reference | Related Articles | Metrics
    Systematically promoting the construction of natural ecological protection and governance capacity: Experts comments on Master Plan for Major Projects of National Important Ecosystem Protection and Restoration (2021-2035)
    GUAN Feng-jun, LIU Lian-he, LIU Jian-wei, FU Ying, WANG Ling-yun, WANG Feng, LI Yong, YU Xing-di, CHE Na, XIAO Ying
    JOURNAL OF NATURAL RESOURCES    2021, 36 (2): 290-299.   DOI: 10.31497/zrzyxb.20210202
    Abstract355)   HTML8)    PDF (1013KB)(97)      

    Master Plan for Major Projects of National Important Ecosystem Protection and Restoration (2021-2035) (hereinafter referred to as The Plan) is the first comprehensive plan involving ecosystem protection and restoration after the 19th National Congress of the CPC (2017), which plays a significant strategic and guiding role in undertaking related tasks. The promulgation of The Plan, accomplished by the Chinese government departments concerned, is a successful beginning for jointly arranging major projects in natural resources across departments, disciplines and regions. Recently, some critical contents relating to The Plan, such as the opportunities and challenges of implementation, were discussed by seven experts from Consulting and Research Center of the Ministry of Natural Resources. The key opinions are as follows. In order to work efficiently guided by The Plan, its four main characteristics need to be especially concerned, including systematic and continued deployment; strategic and coordinating policies; objectives-problems dual oriented tasks; and scientific and specific methods. Meanwhile, it is necessary to deal with three kinds of crucial relationships about aims and assignments properly, which are ecosystem protection and utilization, ecosystem restoration and ecological compensation, ecosystem protection and controls on territory use. Besides, seven valued aspects are still worthy to be deeply pondered and some suggestions are proposed, including: establishing diversified financing mechanism, clarifying responsibility of different entities carrying on ecological protection and restoration, formulating related systematic technical standards, strengthening databases and information platforms, optimizing territory use control regulation to adapt to the major projects of The Plan, coordinating ecological protection and natural resources especially energy resources exploitation, reinforcing early basic and comprehensive investigation and later strict surveillance as well. In addition, it is requisite to monitor and evaluate the executive conditions of The Plan and other supporting policies, so as to adjust and improve The Plan in time, which is beneficial to fulfill tasks and achieve goals.

    Reference | Related Articles | Metrics
    Response of lake dynamics to climate change in the Hala Lake Basin of Tibetan Plateau from 1986 to 2015
    LI Dong-sheng, ZHANG Ren-yong, CUI Bu-li, ZHAO Yun-duo, WANG Ying, JIANG Bao-fu
    JOURNAL OF NATURAL RESOURCES    2021, 36 (2): 501-512.   DOI: 10.31497/zrzyxb.20210218
    Abstract158)   HTML7)    PDF (2823KB)(92)      

    Lakes are sensitive indicators of climate change, and studying their dynamics is important for revealing global climate change. This study selected the Hala Lake Basin in the northeastern Qinhai-Tibet Plateau as a study area, and examined the relationships between the temporal and spatial changes of lake in the Northeastern Qinghai-Tibet Plateau and the climate change based on remote sensing imagery, climatological data, and topographic data from 1986 to 2015. Results showed that the lake area change presented a "V"-shaped pattern in the Hala Lake Basin during the study period. The dynamic change process can be divided into two stages: The stage of volatility decline (1986-2001) and the stage of volatility rise (2001-2015). The lake area decreased from 593.68 km2 in 1986 to 584.83 km2 in 2015 (with a reduction of 8.85 km2) and increased from 584.83 km2 in 2001 to 614.31 km2 in 2015 (with an increase of 29.48 km2). Correlation analysis between changes in lake and glacial areas and climatic factors in the same period of remote sensing data shows that the change of lake area is positively correlated with the stage precipitation, and the relevant significance level is above 0.01. The dominant factor of the dynamic change of lake is precipitation.

    Table and Figures | Reference | Related Articles | Metrics
    Delimitation of urban growth boundary in ecologically vulnerable areas in the Upper Yellow River: Take Linxia Hui Autonomous Prefecture as an example
    YANG Xue-di, BAI Yong-ping, CHE Lei, ZHOU Liang, QIAO Fu-wei, WANG Zhi-guo
    JOURNAL OF NATURAL RESOURCES    2021, 36 (1): 162-175.   DOI: 10.31497/zrzyxb.20210111
    Abstract287)   HTML8)    PDF (4694KB)(90)      

    The Yellow River Basin is an important ecological barrier and economic zone in China, and its upstream water-conserving areas play a decisive role in the sustainable ecological development of the Yellow River Basin. Therefore, scientific coordination of urban and rural development and reasonable delineation of urban growth boundary (UGB) are of great significance for ecological protection and high-quality urban development in the Upper Yellow River Basin. This paper takes Linxia, a typical prefecture-level city in the upper reaches of the Yellow River, as the research object, and assesses its ecological quality based on land use and related remote sensing data using remote sensing ecological index (RSEI) and ecological sensitivity analysis. On this basis, the future urban growth boundary development with and without ecological quality assessment conditions is analyzed in combination with CA-Markov comparison. The results show that: (1) From 2005 to 2015, the overall ecological environment of the study area was poor and decreased year by year, and the ecological quality (RSEI) result dropped to the lowest (0.38) in 2015. Meanwhile, the ecological sensitivity changed from moderate to low sensitivity. (2) The urban expansion area increased by 6.04 km2, and the scale of urban construction land in 2030 obtained by CA-Markov simulation was 95.88 km2, which exceeded the planned area by 3.2 km2, and the urban expansion was not effectively restrained. (3) Simulation of RSEI-CA-Markov shows that the urban construction land in 2030 is 90.36 km2, which is smaller than the planned government planning area of 3.3 km2, and meets the requirements of urban sustainable development. Based on this, the designated UGB has stronger urban management capabilities. The delineation of UGB in the ecologically fragile area in the Upper Yellow River is conducive to guiding and realizing sustainable urban development, which can also provide reference for the sustainable development of other ecologically fragile cities in China.

    Table and Figures | Reference | Related Articles | Metrics
    Spatial patterns and moving trajectory of inbound tourists based on geo-tagged photos:A case study of Nanjing city
    LU Shu-ying, HUANG Xin, TAO Zhuo-min
    JOURNAL OF NATURAL RESOURCES    2021, 36 (2): 315-326.   DOI: 10.31497/zrzyxb.20210204
    Abstract161)   HTML6)    PDF (3733KB)(89)      

    With the rise of the Internet and social media, geo-tagged data in the sharing of users has become an important content of tourism flow research. Based on the photos of on the Flickr platform during 2010-2018, this study takes the spatial characteristics of Nanjing inbound tourism flow as the research object, and uses the methods of DBSCAN algorithm, ArcGIS 10.2 and others to explore inbound tourism hotspots area, the features of moving trajectory and patterns of Nanjing. The results of the study show that: (1) The peak of inbound visits occurred in March-June and October, and the tourists mainly took one-day trips. (2) There are obvious differences in the spatial distribution of Area of Interest (AOI) in Nanjing. The historical urban district (HUD) is most popular for inbound tourists, and has the largest number of AOI, followed by the central urban area (CUA), and the suburbs. The distribution of AOI in the HUD is highly coincident with its related industrial space, such as tourist attractions and commercial shopping centers; Zhongshan Scenic Area in the CUA is a hotspot for tourists who are interested in history and culture; the distribution of AOI in the suburbs is basically consistent with that of local tourist attractions. (3) There are great differences in moving trajectories between single-day and multi-day trips, which are reflected in the network scope, network system, tourism inflow and outflow, and transfer difference. (4) The patterns of inbound moving trajectory can be divided into intra-area pattern and inter-area pattern. Based on the above results, suggestions are proposed for development of historical urban area, central urban area and the suburbs.

    Table and Figures | Reference | Related Articles | Metrics
Share: