The construction of the territorial spatial planning system has been fully carried out. The clear and detailed status map and data are an important basis for understanding the natural resources, and also an important support for the preparation of territorial spatial planning. However, the current land classification standards, data accuracy and application targets of the current territorial spatial data are not uniform. Based on remote sensing images, geographic conditions and Internet POI data, this paper studies one map of land and space status, synthesizes existing land classification standards and data accuracy, and constructs one map of territorial spatial planning status of Qingdao city. On this basis, the application direction of one map of territorial spatial planning is discussed, including the preliminary delimitation of "Production-Living-Ecological Space" in Qingdao city. The suitability of urban construction, the importance of ecological service function and the suitability of agricultural production were analyzed. The construction of one map of the status of territorial spatial planning plays an important role in defining the resource utilization cap and the environmental quality bottom line, standardizing the territorial spatial planning data, and supporting the preparation and management of territorial spatial planning.

Ecosystem service value is the base of decision-making for ecological protection, ecological regionalization and ecological compensation, and it appears the dynamic spatio-temporal changes which are closely connected with the variations of ecological structure and function. However, it is still lack of a universal and integrated dynamic evaluation method for ecosystem service value in China. Based on literature survey, expert knowledge, statistical data and remote sensing data, using model simulations and GIS spatial analysis method, this paper modified and developed the method for evaluating the value equivalent factor in unit area, and proposed an integrated method for dynamic evaluation on Chinese terrestrial ecosystem service value. This method can realize the comprehensive and dynamic assessment of ecosystem service value for 11 service types of 14 different types of terrestrial ecosystem at monthly and provincial scales in China. The preliminary application indicated that the total ecosystem service value was 38.1×10¹² yuan in 2010, in which the value from forest ecosystem was the highest, accounting for about 46%, followed by water body and grassland. Among different ecosystem service types, the contribution from regulation function was the highest, especially the values from hydrological regulation and atmospheric regulation which accounted for about 39.3% and 18.0% of total service value, respectively. Moreover, ecosystem service value presented apparent spatio-temporal patterns in China. Spatially, the ecosystem service value decreased from southeast to northwest and the highest value appeared in southeastern and southwestern regions. Temporally, the ecosystem service value for most of the ecosystems attained the peak in July and reached the trough during December and January except desert, barren and glacier ecosystem. Generally, although this established method still needs to be developed and optimized, it is the first to provide a relatively comprehensive approach for the spatio-temporal dynamic evaluation of ecosystem service value in China, which will be helpful to the scientific decision-making on natural capital rating and ecological compensation.

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.

Recently, research on food loss and foodwaste and the related environmental impacts has increased globally. Food loss and food waste occur in all aspects of the food supply chain from farm to table. A better understanding of the scales and trends of food loss and food waste is very important for any mitigation strategies. The food waste reflects directly the civilization of a society, and we need to understand the causes and consequences of food waste from multiple perspectives. Addressing food loss and food waste issue requires a wide range of actions from reducing, to promoting a healthy diet culture, learning from international experience, and building intelligent food systems.

Water resources serve as the material base of the existence and development of human beings.It is a huge complicated system involving population,economy,society and environment.Water resources and water cycle are the keys in the system.Based on the summarization of the water resources concept and its attribute of nature,economy and society,this paper discusses the relationships between water resources and water cycle,water-balance structure,population,economy,society and environment in details.The paper also emphasizes the interactions of water cycle and water balance,water resources utilization and evaluation,economic activity,and water resources carrying capacity.Given an example of the Yellow River valley,the paper states that there is a closer relationship between water resources,population,economy,society and environment.The author gives a definite concept and connotation of water resources carrying capacity on the base of summing up the former studies.Summarizing the model system of water resources carrying capacity,the author also points out that it is very essential to use the system to depict the complex relationship between water resources and other four aspects,namely population,economy,society and environment.Considering the problem from the viewpoint of the regional sustainable development and alleviating the benefit conflict of distribution of water resources,we should clarify the following aspects:water demands for ecological environment,including rivers,animals,plants and land;water demands for population and social-economic development;and water environment capacity that can tolerate certain amount of pollutants.So,in order to promote the sustainable development of population,economy,society and environment,it is of great significance to simulate and predict the evolvement of the huge complex system with the combination of remote sensing,GIS and modern math theory,seek a reasonable allocation of water resources carrying capacity,and study the enhanced module of water resources carrying capacity.

The rural revitalization, as a national strategy in the new era, puts forward the requirements and goals of the thriving industry, pleasant living environments, social etiquette and civility, effective governance and prosperity. China is a country with a vast territory, marked by regional differences in resource and economic development levels. What's more, rural areas are complex, diverse, and have many problems. Rural revitalization is a systematic project with comprehensive, complex and regional characteristics. Sixteen young scholars in the field of rural geography across the country have conducted in-depth discussions and reflections on the scientific path of rural revitalization in China. The core points are as follows: (1) In accordance with the law of time-space distribution, we should fully understand the connection between the historical basis of rural development and the practical needs, establish a theoretical and technical system that highlights regional characteristics and has operability, and promote the transformation of rural residential environment, industrial system and governance mode in a classified and orderly manner. (2) Rural revitalization strives for the integration between urban and rural areas to build a compound multi-center network system, which breaks through the village and town systems of traditional linear "central place", and innovate the spatial organization mode of "village cluster". Rural endogenous force, urban radiation force and planning binding force jointly drive rural revitalization. (3) The agriculture has multiple functions such as food safety, social stability, and ecological products. Its development needs to create the whole value chain of agriculture to promote the integration of primary, secondary and tertiary industries. (4) In energy-rich areas, we should fundamentally solve the problem of unbalanced and inadequate rural development under the premise of ensuring the national energy security demand. In Southwest China, we should take advantage of ecology and human resources to build a modern agricultural industry system, remodel the brand of rural tourism, and build landscape rural homes. In Northeast China, rural revitalization must proceed in an orderly and classified way in the process of synergistic promotion of the "northeast revitalization" strategy. In the Yangtze River Delta region, it is necessary to cognize the evolutionary stages from rural industrialization to rural urbanization, and then to rural characteristics with more and more emphasis on the social, cultural and ecological construction of rural areas, seeking a scientific path of rural revitalization. In Northwest China, we propose to effectively improve the ability of "independent poverty alleviation" in rural areas under the premise of ecological protection, and realize the transformation from "transfusing blood" to "producing blood". In the Beijing-Tianjin-Hebei region, oriented by equalization of basic public services in urban and rural areas, we will promote the development of urban-rural integration and rural revitalization. In resource-oriented areas, rural industries will replace the industrial system formed around resource exploitation with an efficient agricultural system integrating primary, secondary and tertiary industries. In traditional agricultural areas, it is necessary to optimize the coupling pattern between farmland use transformation and rural labor structure change, which is an important means to achieve rural revitalization. In economically developed areas, villages with "mixed" characteristics need to activate the assets and capital attributes of rural land resources, promote the integration and activation of spatial order, and comprehensively explore the modern rural governance mode with the participation of multiple subjects.

Human induced greenhouse effects and their impacts on global climate change and eco environments,especially the responses of forests to global climate change,have aroused interests of many scientists.In this paper,the potential effects of future climate change on forest ecosystem structure,species composition,tree and forest distribution and productivity are discussed systematically.In the meanwhile,the fields that must be further studied are advanced.

In recent years, the unification of territorial space use regulations has been upgraded to an unprecedented level of national strategic deployment, which is an extremely important reform task with overall significance. Based on the systematical review on the institutional evolution of territorial space use regulation since 1949, this paper puts an emphasis on summarizing the major features of previous territorial space use regulations in China. In general, we conclude that the key to implement territorial space use regulations is to control the three important aspects which consist of planning, licensing and supervision, to coordinate the utilization of continental space and ocean space and to discriminate the management of construction and non-construction purposes. On the premise of system construction, we propose four suggestions to institution on how to unify the territorial space use regulations: (1) Establishing a unified control line system for territorial space use regulations at the planning level; (2) Building an abundant and effective measure system for territorial space use regulations; (3) Constructing a unified and explicit regulatory system for territorial space use regulations at the supervision level; (4) Improving the legal system to help territorial space use governance at the support level.

Resource and environment carrying capacity is the scientific basis and developing constraints of spatial planning. This paper combs the development of the concept, theory and practical application of carrying capacity, and points out the existing problems in research and application, such as concept's obscurity boundary, evaluation biased index calculation, and insufficient research on carrying capacity transmission mechanism. The reform of the spatial planning system and the changes in production modes, lifestyles and development modes in the new era have put forward new demands on spatial planning. It is necessary to explore and innovate the carrying capacity evaluation which is supporting the spatial planning: (1) Further clarify the conceptual connotation of carrying capacity and form a concept set; (2) Study the internal mechanism of carrying capacity and clarify the formation mechanism of carrying capacity; (3) Construct a multi-space scale, multi-evaluation unit's carrying capacity evaluation system to meet the needs of multi-level spatial planning. In practice, it should provide a scientific basis for determining the main indicators and main tasks of spatial planning according to spatial planning and spatial governance changes, supporting new goals of spatial planning, adapting to new modes of spatial governance, and taking new approaches to spatial governance.

The Communist Party of China's 19^th National Congress Report has clearly set the goal of "smart society" and put forward new requirements for the current development of territorial spatial planning. Nowadays, the empowerment of information technology based on the Internet, big data, cloud computing, etc. is the main driving force and development focus of the current practices of smart territorial spatial planning. How to understand and promote the development of smart society is the foundation of the compilation and implementation of smart territorial spatial planning. This paper emphasizes the importance of human-land relationship and the theory of urban life organism to the planning and governance of territory in a smart society. It points out that the overall conceptualization of smart territorial spatial planning should be transformed from informational empowerment to comprehensive empowerment, which includes technological empowerment and innovative empowerment. The paper constructs a smart territorial spatial planning framework-EPTI-based on the ideas of ecological civilization, people-oriented, technology integration application and institutional innovation, and discusses the paths toward smart compilation and implementation of territorial spatial planning.

Before the institutional reform of the State Council, the "Three Control Lines" of ecological protection red line, permanent basic farmland and urban development boundary were delineated by different ministries, which resulted in insufficient coordination and overlapping results, and difficulties in implementing management. After the institutional reform of the State Council, the Ministry of Natural Resources is responsible for establishing a spatial planning system. It requires that the three control lines be delineated from top to bottom on the basis of the evaluation of the urban capacity of resources and environment and the suitability of territorial spatial development. This paper summarizes the manifestations and causes of contradictions and conflicts in the delimitation of the three control lines in Shenyang as a pilot city, constructs relationships between the three control lines and the three spaces of ecology, agriculture and cities, establishes the management system and adjustment rules, and explains the adjustment and optimization practices within the scope of the city. The study found that it is difficult to distinguish the functions of the three control lines overlapped in space, mainly because permanent basic farmland undertakes the mission of restricting urban spatial spread, and the index can not be adjusted across administrative regions, which results in some permanent basic farmland having to be arranged in cities; different definitions leading to some urban parks are classified as ecological protection redline; some cultivated land in ecological protection redline was previously classified as permanent basic farmland. The paper puts forward the optimization proposals of three control lines under the background of territorial spatial planning: First, we highlight the characteristics of both the policy line and the technical line, and delimit them from top down and bottom up; second, the country needs to carry on the innovation to the basic farmland adjustment policy and system; third, we will establish a hierarchical management mechanism to properly reserve the flexibility of local administrative power.

The quantity of the cultivated land is related to the food security and the basic national conditions of China as well as many macro decisions, and thus it has received great concerns from home and abroad. The Chinese government attaches great importance to the protection of cultivated land, makes it as a basic national policy, and sets up a Cultivated Land Protection Red Line of 0.12 billion hectare (1.8 billion mu). However, the area of the China’s cultivated land remains a mystery, especially when the Second National Land Survey released in 2013 disclosed an increase of more than 13.33 million hectare (0.2 billion mu) under the background that the area of cultivated land has been declining for decades. In this paper, we carry out comparative analysis on the data of the cultivated land area before and after the Second National Land Survey at different spatial scales from the dimensions of the total area of the cultivated land and the area of different types of cultivated land. The results show that: 1) At the regional scale, the increased 13.33 million hectares (0.2 billion mu) of cultivated land in the Second National Land Survey mainly distribute in the Northeast China, the North China, and the Northwest China, that nearly half of the increase are in the Northeast region. The South China is the only region with cultivated land area reduction. At the provincial scale, the cultivated land area increased in 26 provinces, especially in the three provinces in Northeast China, Xinjiang and the Inner Mongolia. Beijing, Shanghai, Jiangsu, Guangdong and Shaanxi had decline of cultivated land area, especially Guangdong and Jiangsu. At the municipal scale, the spatial agglomeration of cultivated land increase is significant. The cities with increase of cultivated land concentrate in the Northeast China, and the cities with reduction of cultivated land concentrate in the Pearl River Delta and the Yangtze River Delta. At the county scale, the spatial agglomeration of cultivated land is obvious. Counties units with cultivated land increase are centralized in the Northeast China, and the counties with reduction of cultivated land concentrate in provinces of Guangdong, Jiangsu and Yunnan. 2) Three types of cultivated land have increased. The dry land increased the most (53%), and the paddy field increased the least (10%). The paddy field and the irrigated land are increasing in the North and decreasing in the South, and the number provinces with increased land and decrease land are almost the same. Both the increase and the decrease of the dry land mainly distributed in the North. The spatial distribution of changes is very concentrate, that most increase occurred in the northeast and most decrease appeared in the Huang-Huai-Hai Plain. The center of the cultivated land continues to move northward, which exacerbate the spatial incoordination of water and soil resources and thus do harm to the quality of the cultivated land. In the future, the Chinese government should pay close attention to not only the quantity of cultivated land change, but also the improvement and protection of the quality of the cultivated land. The increased area of the cultivated land in the Second National Land Survey resulted from a variety of reasons. The main reason is that the technology and methods adopted in the Second National Land Survey disclosed the concealed area in the false report of the local government.

In the new era, the core goal of territorial spatial planning is to meet the people's needs for a better life and also to protect natural resources. As a new type of planning, the method of territorial spatial planning is generally lacking. Based on the endowment of natural resources, scholars use data based on statistics and surveys, as well as methods of statistical analysis, spatial analysis and deduction to evaluate the carrying capacity and suitability of land space at the national and provincial levels, and make a static delimitation of the ecological red line, prime farmland protection line and urban development boundary. However, the existing studies rarely consider the dynamic impact of human activities on the use of land space, and lack the scientific arrangement of ecological space, agricultural space and urban space under the new development trend. This paper introduces the big data which can directly reflect the temporal and spatial changes of human activities. It mainly discusses the direction and specific methodological framework of the application of big data from the four parts of territorial spatial suitability evaluation, ecological spatial planning, agricultural spatial planning and urban spatial planning. Meanwhile, it emphasizes the scientific path of territorial spatial planning compilation under the interaction of "natural space" and "social and economic activities".

With the continuously strengthening complexity and systematization of its evaluation objects, life cycle assessment (LCA) methodology has gradually developed into three categories, including process based LCA (PLCA), economic input-output LCA (EIO-LCA) and hybrid LCA. The development and features of these methods were briefly stated in this study, and their strengths and weaknesses were analyzed with examples. It can be concluded that the bottom-up PLCA method, which is based on specific facility/site data, can describe elements in a supply chain precisely, but there exists cutoff error due to subjective boundary selection. The EIO-LCA method, which is based on national input-output table, is holistic but suffers from data lagging and aggregation error due to coarse graining of processes. The hybrid LCA has advantages of precision and completeness, since it combines PLCA and EIO-LCA. Then the paper emphasizes on discussing hybrid LCA. Some prospects of hybrid LCA were concluded and previewed to provide suggestions for its further improvement and development.

Urban-rural integration is a crucial avenue for the low-carbon transformation of national spaces, particularly in understanding its mechanisms for low-carbon land use within the context of regional integration. Employing the ESTDA framework and spatial econometric models, we quantified the spatio-temporal dynamics of urban-rural integration's impact on low-carbon land use in the Yangtze River Delta. This involved assessing the development level of urban-rural integration and the efficiency of low-carbon land use. Our analysis revealed the following findings: (1) Between 2005 and 2020, the Yangtze River Delta experienced a fluctuating upward trend in both urban-rural integration development level and low-carbon land-use efficiency, with notable regional disparities and a spreading pattern centered around the region's central cities. (2) A significant positive spatial correlation was observed between urban-rural integration and low-carbon land use efficiency, with an increasing spatial dependence. Local patterns remained stable, showing spatial clustering convergence for both high-high (HH) and low-low (LL) types. (3) In contrast to the evolution of low-carbon land use patterns, urban-rural spatial integration exhibited weak correlations, with local patterns and dynamic transitions displaying path-dependent and spatially locked features. (4) Urban-rural integration emerged as a key factor influencing low-carbon land use, with each 1% increase in its development level resulting in a 0.2% increase in local low-carbon land use efficiency. Among the control factors, the direct effects of technological inputs and the degree of opening up were positive, while the direct effects of financial and ecological pressures were negative. Fiscal stress, environmental regulation, public service facilities, and land marketization showed no significant spatial spillover effects. The results of our study provide references for formulating low-carbon and efficient land-use policies, promoting high-quality development through the integration of urban and rural areas.

For the purpose of transition of economic development pattern, China’s social-economic sustainable development depends on the harmonious development of economy, resources and environment. Coupling and coordinating degrees are designed to measure the interaction and mutual influence of two or more systems. Coupling degree is highly explainable and operational. Hence, it has been widely used in recent years. However, in many empirical studies, coupling degree formula was usually not used correctly. As a consequence, the range of the coupling degree could not be in the interval [0, 1]. One aim of this paper is to discuss and revise the coupling degree formula. A revised coupling degree formula is obtained and extended to n systems. This paper uses the revised coupling degree formula to calculate the coupling and coordinating degrees of three systems of 31 provinces in mainland China after comprehensive evaluation of provincial economic development, resources endowment and eco-environment. Then, it highlights the spatial analysis of the coupling and coordinating degrees in 31 provinces. The main results are the following. During the period of 2003-2014, generally the coupling degree had an increasing trend. Similarly, the coordinating degree grew up over time. From the spatio-temporal perspective, there was little variation in spatial distribution of coupling degrees of 31 provinces. Moreover, there was significant evidence of spatial autocorrelation of provincial coupling degrees of 31 provinces while provincial coordinating degrees of 31 provinces showed random spatial distribution.

Based on a series of1∶1000000maps of natural resources of China,6categories of ecological assets were divided,which included forest,grassland,farmland,wetland,water body and desert.By means of GIS,the1∶4000000Ecological Assets Map of Tibetan Plateau was compiled and the relative data were calculated.According to partial global ecosystem services value evaluation results obtained by Costanza et al.(1997)along with responses of ecological questionnaire s from specialists of China,this paper established the ecosystem services value unit area of Chinese terrestrial ecosystems.We used the ecological assets value table as a basis and also adjusted price value by biomass and then,the ecological assets value of the Tibetan Plateau was estimated.The results indicated that ecosystem services value of Tibetan Plateau is some 9363.9×10⁸ yuan annually,accounting for17.68%of annual ecosystem services value of China and0.61%of the world.The value of soil formation and disposition provided by ecosys-tem s is the highest,which occupies19.3%of the total ecosystem services value and then,the value of waste treatment takes up16.8%,water conservation value,16.5%and biodiversity,16%.The forest and the grassland ecosystem s offered the main ecosystem services value,being31.3%and48.3%of the total value provided by different ecosystem types,respectively.

Valuation of global ecosystem services by R Costanza(1997)has attracted attention of the Chinese ecological researchers over the years. And many Chinese scientists have been using the methods to valuate the ecosystem services for forest, grassland and farmland ecosystems. However, it has been turned out that there are several shortcomings in direct adaptation of the methods, for instance, some ecosystem services have been insufficiently valuated or even ignored via using Costanza’s method. To fill this gap, we have, on the basis of Costanza’s method, developed a new method or 'unit value’ based method for assessment of ecosystem services. Expert interviews with structured questionnaire were contacted in 2002 and 2007 respectively, and altogether 700 Chinese ecologists were involved in the interviews for testing the method. It has been found that the values of ecosystem services from expert knowledge based unit value method and biomass based method are comparative. Therefore, expert knowledge based assessment of ecosystem services could be used as a method for assessing ecosystem services with known land use areas, and a good result could be generated within a short period of time. However, for scientifically sound and concrete results, the spatial disparity of ecosystem services should be taken into account.

Objectively assessing rural eco-environmental quality and predicting its development trend have important theoretical and practical significance for food security, sustainable development of rural economy, and harmonious relationship between economic growth and ecological environment. Based on the framework of PSR model, the paper constructed an evaluating index system to assess the dynamic changes of rural eco-environment during 2000-2015. And the GM grey system theory model was applied to predict the evolution trend of rural eco-environment during the 13rd Five-Year Plan period. The results showed: 1) The quality of rural eco-environment had been falling in the past 15 years. The comprehensive evaluated score of rural eco-environment decreased from 0.669 in 2000 to 0.387 in 2015. The pollutions emission in rural areas was increasing, but the input to environmental protection was low. The continuing growth of Chinese rural economy was at the cost of ecological and environmental deterioration. 2) According to the past growth mode of rural economics, rural eco-environmental quality will continue deteriorating during 2016-2020, far from the expectation of green development during the 13rd Five-Year Plan. We need to change the mode of rural production as soon as possible in order to ease the pressure on rural soil and water imposed by fertilizers and pesticides, and enhance investment in rural environmental protection as much as possible.

To develop the marine economy and build a strong marine country, we need to care about, understand and manage the ocean from the perspective of national strategy. In order to systematically understand China's marine resource economy and strategy under the background of marine ecological civilization construction, nine well-known experts from marine-related fields were invited to discuss marine ecological civilization construction, marine land space planning, marine ecological pasture construction, and coastal ecological restoration. They conducted exchanges and interviews in frontier research fields such as marine strategic emerging industries, marine science and technology development, deep-sea mineral resources development, marine geopolitics, and China's participation in global ocean governance. According to their interviews: (1) The construction of marine ecological civilization is an important part of the construction of a powerful marine country. In the construction of marine ecological civilization, we should clarify the goal of building a beautiful ocean, master the methods of marine ecosystems, adhere to the major strategy of coordinating land and sea, and build an institutional system for marine ecological civilization. (2) National marine space planning should integrate existing sea-related plans, rationally develop, utilize and protect marine resources, innovate planning technologies and planning governance concepts, and strengthen marine space control indicators, marine space development capabilities, and local characteristic mechanisms for marine space governance, etc. (3) The construction of marine ranches should focus on the industrial chain and promote the construction of "all-for-one" marine ranches; strengthen the original drive, build an "all-for-all" marine ranch technology system; advocate integrated development and cultivate new "all-for-one" marine ranches. (4) Coastal ecological restoration based on "natural restoration" emphasizes the use of technologies to optimize the spatial layout and resource management of land-ocean staggered areas, fully consider the process and mechanism of natural restoration of coastal ecosystems, and improve the efficiency of ecological restoration. (5) The development of marine strategic emerging industries should grasp the general trend of the digital economy, focus on the development of intelligent manufacturing, accelerate the upgrading of the industrial structure, adhere to green and low-carbon development, and actively connect with regional strategies. (6) The key tasks for the future development of marine science and technology are to focus on the new strategic fields of deep sea and polar regions, improve the real-time fine observation and forecasting capabilities of key sea areas, focus on the intensive use of marine resources and energy, and strengthen the research and development of key core technologies of marine engineering equipment. (7) In the development of deep-sea mineral resources, it is necessary to strengthen international cooperation, carry out multidisciplinary investigation, long-term monitoring, enhance the research and development level of deep-sea development technology, evaluate the environmental impact of deep-sea mining, reduce the disturbance of the deep-sea development process to the marine environment, and realize deep-sea mining and deep-sea environmental protection coordinated development. (8) China should implement a spatially differentiated and targeted marine geostrategy to serve the unification of the motherland, the maintenance of marine rights and interests and the utilization of marine resources, and the safety of marine transportation and ecological environment, so as to ultimately serve the construction of a community with a shared future for the ocean. (9) We should implement the "going out" strategy of China's marine spatial planning technology, actively promote the strategy of building a "node network system" in China's overseas parks, and implement the talent training and training strategy for the needs of the Belt and Road Initiative, in order to provide necessary space fulcrum and technical support for global marine governance.

The geosystem mainly studies the interaction mechanism between human and natural system on the surface of the earth, emphasizing the integration of human-land use relationship, natural and human factors, namely the human-land use coupling systems. Applications of the geosystem in the land space is mainly composed of geodecisions-making, geosimulation and geoengineering, and the interactions among these constitute geogovernance. Land space is the material carrier of the common practice of nature and human, the extent to which human shaped by nature is no less than that of opposite transformation, therefore, geosystem theory with the core of Coupled Human and Natural Systems has become the theoretical basis of land spatial planning and renovation. Based on the coupled human and natural systems, the remodeling of land space is ultimately reflected in various activities of human acting on the natural environment with the form of geogovernance. With the development of reform and opening-up for 40 years, Chinese land space has been basically in a relatively stable pattern and mainly consists of economic zones, poor areas and small towns, which is different from that of developed countries. We are in a state of "three-dimension-transformation coupling", i.e. urbanization, townization and ruralization. Thus, we must attach importance to the studies of strategic areas based on the Belt and Road Initiative, such as the Pan-Third Pole, the South China Sea Rim, and the Northeast Asia-Arctic. According to the theory of Coupled Human and Natural Systems and the value equilibrium of land space, the basic scientific problem of land space remodeling is the evolution and driving mechanisms of Coupled Human and Natural Systems. Land spatial planning can be divided into three types: Development planning, controlling planning and restoration planning. The protection and management of land space includes the whole area renovation with the core of land use, the systematic restoration with the core of ecological civilization, and the comprehensive management with the core of social harmony. The development goal of human activity system is to establish a community of shared future for mankind, correspondingly, that of the natural system is to establish a sustainable system, so the ultimate development goal of Coupled Human and Natural Systems is to form a community of shared destiny with the interaction between human and nature.

Ecological-production-living space (EPLS) is not only the basic carrier of human economic and social activities, but also the spatial reflection of human spiritual and cultural needs. Identifying the scope, understanding residents' demand, adjusting the supply and coordinating the functions of EPLS, are the core of the content of the territorial space planning, as well as the important premise of realizing the modernization of governance capacity and high-quality development in the new era. Based on the requirement of compiling the current territorial spatial planning, and the theoretical methods of behavioral science and behavioral geography, this paper explores the theoretical relationship between ecological-production-living behavior and ecological-production-living space. According to the principle of "demand analysis and spatial identification-problem diagnosis and goal determination-mechanism and coupling relationship-spatial optimization and policy suggestions", an optimization analysis framework of EPLS based on residents' behavior is constructed. This study combines residents' behavior research with space supply and demand, and provides a theoretical framework and new ideas of "humanization" for land and space planning.

The world is undergoing tremendous changes, and food security is encountering major challenges in China and even the world. In order to systematically study globalization and explore its new patterns, new issues and new paths for food security, we interviewed ten distinguished professors from different fields and discussed hot topics, including the potential for increasing farmland production, agricultural water and soil resources and food production, food waste, international agricultural product trade, stable supply of key agricultural product, global agricultural food system, dual circulation pattern and corporate actions, global food production and consumption, international food security governance, and cutting-edge research on food safety. The result shows that the global agricultural food system has entered an era of complexity and high risk. International food security governance is facing challenges in terms of resources, binding force and action power. We are facing an increasing pressure of import dependent agricultural products to ensure stable supply. It is necessary to deepen supply-side reform and strengthen demand-side management so as to guarantee national food security. New changes have taken place in globalization. This will test China's ability to deepen agricultural opening-up, participate in global food security governance, and achieve national food security. In the face of complex international and domestic situations, for better national food security governance, it is necessary to adhere to system thinking and coordinate domestic and international markets. It is also very important to target the entire industry chain, emphasize risk control, and handle the relationship between the government and the market. Furthermore, researchers need to explore the internal relationships and specific mechanisms between food security and other important issues, such as food systems, ecosystems, high-quality development goals, agricultural opening-up, and new dual-circulation development patterns. This could provide a scientific reference for establishing and improving the national food security strategy of "featuring self-sufficiency based on domestic grain production, guaranteed food production capacity, moderate imports, and technological support" in the New Era.

Ecosystem services are the foundation of man's sustainable development.But when human take advantages of many kinds of ecosystem services in providing natural resources and living environment,they also affected ecosystem services intensively.Although a part of human activities are helpful to stabilize and improve ecosystem services,more of them result in a series of eco-environmental crises and disasters that endanger man's survival and development.The damage of ecosystem services due to anthropogenic effects and its consequence are increasingly becoming outstanding problems in the world.The impact of human activities on ecosystem ser-vices has received much attention of human society at present.It is urgent to make clear the de-gree and ecological mechanism that human activities impact ecosystem services.The patterns and mechanisms and changing trend of ecosystem services affected by human activities were ex-plored in this paper.The impacts of human activities on ecosystem services include negative effects and positive effects.The former weaken ecosystem services through changing habitat and changing ecosystem structure and changing biogeochemical cycle.The main patterns include land reclamation,ur-banization,industrialization,grazing,hunting,international trade,agriculture and so on.The lat-ter play a significant role in improving eco-environment condition.The study of these passive factors,such as ecosystem management,ecological engineering,ecological restoration and reha-bilitation,ecological planning and evaluation,is also undertaking in a more and more deep-going way and has become the hot spot of ecological research.Although many researchers have carried out substantial studies on the impact of human ac-tivities on ecosystem services,much work still need to be conducted in the formation mechanism of ecosystem services,the threshold of ecosystems in bearing the human interference and the simulation and predication of human impacting ecosystem services.These problems were posed in this paper.

Ecosystem preservation and restoration of Mountain-River-Forest-Farmland-Lake-Grass System is very important for national ecological security. Current researches on ecosystem preservation and restoration for territorial spatial planning lack the determination and identification of key areas from a perspective of ecosystem integrity and landscape connectivity. Due to wetland degradation and homogeneity of habitat types that resulted in the low ecosystem resilience, it is urgent for in Yantai, a typical bay city in China, to restore degraded ecosystem and preserve natural resources. In the study, a regional ecological security pattern was proposed and key areas of ecosystem preservation and restoration including pinch points, barrier points, break points and fragmented ecological functional land were identified using habitat quality model, habitat risk assessment model, granularity inverse method, minimum cumulative resistance model and circuit theory. The results showed that the ecological hubs covered an area of 668.85 km², with a total of 1548.36 km corridors between them, and most of the hubs were water body and forests. All of them constructed a "two horizontal and two vertical" ecological security pattern. Key areas of ecosystem preservation and restoration were identified based on the ecological security pattern, including a total of 13 ecological pinch points, 8 ecological barrier points, 39 ecological break points, and 1308.66 km² of fragmented ecological land. Suggestions of restoration were proposed, with a combination of the spatial distribution characteristics and land use status of various key areas of ecosystem preservation and restoration. It would help to provide scientific guidance for identifying key areas of ecosystem preservation and restoration for territorial spatial planning and sustainable ecosystem management.

"Three rural issues" (issues concerning agriculture, rural areas, and farmers) is an important mainline of the CPC's centennial course of party building and China's urban-rural development. In order to solve the "three rural issues" in the New Era and promote the implementation of rural revitalization strategy, we hereby invite ten experts in the research field of "three rural issues" and rural revitalization research to conduct interviews. The interview mainly focuses on three perspectives: Historical process and institutional context, urban-rural system and cross scale space, and the integration of policy theory, technical methods, and rural construction practice. It revolves three main lines: The strategic stage and institutional changes of "three rural issues", the essence of "three rural issues" and the ways to solve new "three rural issues", and the rural revitalization mechanism and rural construction practice. The main conclusions are as follows: (1) The essence, key areas, and institutional mechanism innovation of the "three rural issues" in the context of spatio-temporal processes and institutional contexts. It is necessary to grasp the laws of "three rural" (agriculture, rural areas, and farmers) and diagnose the "three rural issues" from the perspective of urban and rural regional systems and even the global perspective space. The "three rural issues" is an optimization decision-making problem for improving the functions of rural regional systems within the overall framework of urban and rural regional systems. The imbalance in urban-rural development and insufficient rural development are the concentrated reflection of the "three rural issues" in the New Era. The crux of the "three rural issues" lies in the uncoordinated development of "human, land, and industry". The core goal of China's "three rural issues" in the new development stage is to move towards the common prosperity of farmers and rural areas. The corresponding development system and working mechanism of "agriculture, rural areas, and farmers" need to grasp the two "bottom lines", do a good job in the two "connections", and promote the two "integrations" in key areas such as national food security, farmers' livelihood development, modern agriculture and rural development, rural revitalization, and urban-rural integration development. (2) The theory of rural revitalization and the rural spatial planning under the requirements of urban-rural system interaction and people's common prosperity. The research and solution of China's "three rural issues" are rooted in the geographical theory of territorial system theory of human-environment interaction and location theory, the sector economy theory and the economic cycle theory, as well as the theory of development economics, sociological function theory and social conflict theories. In the research practice of the "three rural issues", land use transformation theory, rural reconstruction theory, rural development multi-body and multi-pole theory, interface theory, rural attraction theory, and rural sustainability have also been developed. The urban-rural integrated development and the common prosperity of the people should be the result of balanced regional development and Chinese path to modernization. The folk expression of "making rural life attractive" and the strategic goal of "basically realizing rural modernization by 2035" are mutually "exterior-interior" relationship, which can be comprehensively explained from the following three aspects: The spatio-temporal differences and path differentiation of rural settlement evolution and multi-functional transformation, and the phenomenon explanation of rural gentrification and the theoretical application of rural attraction in the context of urban-rural interaction, as well as the theoretical significance and practical path of rural modernization under the guidance of rural sustainability science. Improving local quality is an inherent requirement to meet the people's needs for a better life, and it is an essential requirement and general law of rural revitalization driven by innovation. As the edge of the national urban-rural system, rural areas face constraints such as segmentation, remoteness, low density, and insufficient heterogeneity dividends in improving local quality. Therefore, to improve local quality of rural areas, it is necessary to adapt to and alleviate the relative inefficiency of rural geography, and its important promotion paths include the characteristic development based on endowment, digital transformation and rural agglomeration centered around cities and towns. Guided by spatial planning and taking into account the integrated functional development of production-living-ecological spaces in rural areas, as well as the integration of urban and rural space through spatial planning, through promoting the quality of living space through comprehensive land improvement, assisting in the realization of multifunctional value in agricultural space through refined management, ensuring the sustainable use of ecological space through systematic protection and restoration, which is a solid foundation for rural revitalization and the construction of a new urban-rural relationship. (3) The path mechanism and technical support for the comprehensive rural revitalization and rural construction under the new needs of ecological civilization construction and governance modernization. Comprehensive rural revitalization requires the revitalization of industries, the reform of land, the development of human well-being, and the intelligent updating of technology. First, the essence of operating rural areas is the rational allocation of resources as the object of factors. It is necessary to integrate the high-quality development of agriculture with the high-quality and livable rural areas, promote the interaction and integration of urban and rural systems, actively link natural science, engineering technology innovation, and institutional innovation from the perspective of the big food concept, and implement food safety and important agricultural product supply security. Second, facing the new demand of rural sustainable development and governance modernization, we should innovate the property right governance integration mechanism of rural land system, especially actively build a rural green development mechanism with farmers' participation and an external benefit sharing mechanism of ecological environment governance. Third, it is urgent to break through the barriers that farmers share the gains from the appreciation of rural assets, fill the gap between small farmers and modern agriculture, and establish a concept of county governance that meets the needs of Chinese path to modernization. Fourth, rural construction is an organic combination of the governance of public spaces by the state and the daily life practices of farmers. Through the theory and technology of "computational" rural areas, effective connection and information sharing between the state and rural areas can be achieved, promoting coordinated development from micro to macro, and from local to whole. And we should achieve the aim of building livable, suitable for work, and beautiful rural areas, through multi-level main body co-construction, co-governance, and management. To sum up, the interview views can provide theoretical reference and decision-making reference for the "three rural issues" work innovation and rural revitalization practice towards Chinese path to modernization.

As the national land space and ecosystems are affected by global change nowadays, ecological civilization construction and land spatial planning must be the positive responses of China in the new era. Great achievements have been made in the restorations of ecological space and ecosystems through projects for land consolidation and ecological restoration. However, the degradation of some regional ecosystems still exists, and the interference of unreasonable traditional human activities has not been completely eliminated in China. Meanwhile, China faces a large number of challenges in the economic and social developments of the new era. The transformation and improvement of land consolidation and ecological restoration therefore become the inevitable requirement. Through introducing the concepts, connotations of land consolidation, ecological restoration and relationships between them in the new era, this paper suggested that the transformation should be determined by the variations and complexities of regional ecological and environmental issues, the new requirements of ecological civilization construction and land spatial planning. We also indicated the four shortcomings of land consolidation and ecological restoration at present, including working perception, theoretical basis, technological system, and institutional construction. Specifically in recent practices, the integrated and comprehensive concepts are lagging behind, the key theoretical systems are deficient, the technological supports are instable, and the related institutions are insufficient. Therefore, we proposed the strategies for the corresponding transformation, which mainly included: (1) intensifying the systematic thinking and concept to promote the implementation of land consolidation and ecological restoration on a regional basis; (2) upgrading the theoretical system to stimulate the new motivation for land consolidation and ecological restoration; (3) enhancing the technical support to improve the effectiveness of land consolidation and ecological restoration works; (4) improving the institution construction to reinforce the support foundation for land consolidation and ecological restoration implementations.