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    Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    SEVERAL STRATEGIC PROBLEMS OF LAND USE IN CHINA
    Shi Yulin, Li Lixian, Shi Zhuyun
    1989, 4(2): 97-105. https://doi.org/10.11849/zrzyxb.1989.02.001
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    The total amount of agricultural natural resources is large in China, but the per capita amount is relatively poor.According to the potential of the land, the highest population carrying capacity is 15 hundred million people and in a very long period of time the carrying capacity will be in a critical state.In China, the potential productivity of land is higher in the east and lower in the west. The key area for food production is in the middle part of the country. The present 20 hundred million Mu of cultivated land are the precious part of all the land resources and the land with medium yield deserves much attention We must strengthen the establishment of 9 cereal bases.The strategy of development of forestry must be that the emphasis is transferred to the mountainous areas.For the development of animal husbandry, new forage bases must be established.In short, it is essential for China to develop an economical type of agriculture which aims at making the best use of land resources.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    SOME EXPERIENCIES IN EXPLOITATION OF NATURAL RESOURCES IN HILLY AND MOUNTAIN AREAS
    Xi Huida
    1989, 4(2): 106-111. https://doi.org/10.11849/zrzyxb.1989.02.002
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    The causes of poverty in hilly and mountain areas were studied in this review. The limited loading ability of h & m areas and relation between the poverty and so called "one way flow out" and mistakes in history were discussed. Some effective experiences in exploitation of natural resourses along the strategy combination with the short and long term goals were recommended and integrated ecomic, social and ecological development of h & m areas was stressed.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    A PRELIMINARY STUDY OF THE REGIONALIZATION OF TOURISM RESOURSES IN CHINA
    Yan Shouy ong, Ding Ji, Pu Jingjuan, Liu Yajun
    1989, 4(2): 112-122. https://doi.org/10.11849/zrzyxb.1989.02.003
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    Based on the tourism resourses data of 8000 entities in China, the regional features of the resourses and their regional difference were analysed qualitatively and quantitatively in this paper. Then a three-level regionalization system and a regionalization map of the resour.se were made. There are eight regions at the first level and forty-one regions at the second level in the whole country. There are more or less third-level regions in each of the second-level regions. However, a third-level region must be one of the five types classified according to the quality and quantity of tourism resourses and the situation of traffic. The procedure of the regionalization is in a bottow-up way. The results gained in this study are very helpful to the management of the tourism resourses and the development of Chinese tourism.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    POPULATION, FOOD AND THE UTILIZATION OF LAND AND WATER RESOURCES OF NINGXIA HUI AUTONOMOUS REGION
    Su Renqiong, Ni Jianhua
    1989, 4(2): 123-135. https://doi.org/10.11849/zrzyxb.1989.02.004
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    Population, food and the utilization of water and land resources are important problems in the economic development of Ningxia Hui Autonomous Region. This paper analyses the present situation of these problems and by applying the Grey System Theory and regressive analysis, bulids a forecasting model of population and food. According to the model, a prediction of the population and food of the region in 2000 has been made. After making a balance analysis between supply and demand of food under Various conditions of the water and land resources in 2000, it points out that the region'sfood production would be able not only to be-self-sufficient but also to provide a certain amount of marketable grain, if we fully utilize the water resource of the Yellow River, enlargel the irrigated land areas, and adopt new farming technigues. At the end of the paper, the main ways to solve the problems of food and to prevent the deterioration of ecosystem and environment have been suggested.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    A STUDY ON AGRO-HYDROLOGICAL CHARACTERISTICS OF SOILS IN GANSU PROVINCE
    Deng Zhengyong, Lin Rinuan
    1989, 4(2): 136-144. https://doi.org/10.11849/zrzyxb.1989.02.005
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    This paper first studied the distribution laws of soil bulk density, wilting moisture of soil and field capacity in terms of time and space and the facters related to them. Then according to the standard of soil wetness which defines 40 per cent of the field capacity as heavy drought, 60 per cent as and 80 per cent as optimum, we have calculated the threshold values of soil moisture of various sail wetness for twentysix representative points in five districts. This vvill provide foundations for adobting different agricultural cultivation methods and managerial measures at different localities. In the end, a regionalization index system of agro-hydrological characteristics of soil has been set up for Gansu province by using the wilting moisture of soil as the leading index and the bulk density and field capacity as auxiliary indices. According to the regionalization index, we divided the whole province into five broad regions and twelve subre-gions, discussed the agro-hydrological characteristics of soil in each broad region, and put forward the appropriate measures for soil reclamation.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    A PRELIMINARY STUDY ON THE POTENTIAL PRODUCTIVITY AND THE POPULATION SUPPOTING CAPACITY OF LAND RESOURCES IN JIAXING AERA OF ZHEJIANG PROVINCE
    He Shaoji, Zhou Zikang, Zhou Xuansen
    1989, 4(2): 145-157. https://doi.org/10.11849/zrzyxb.1989.02.006
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    This study is based on the analysis of natural resources of agriculture and the structure of land use in Jiaxing area of Zhejiang Province. It Contains the prediction of the potential productivity of food, plant oil and meat on unit Land area under Certain conditions and in different periods. In this paper, authors present a population supporting capacity of land resources in above-mentioned area, fitting in with the potential productivity at the different standards of living-type.These results show that the supply of plant oil is enough, the food is abundant, but the meat is a little lack for population supporting capacity, which will limit the raise of living standard in some degree. In 1985, the living-type which fits in with population supporting capacity of land resources, is in the stage of warm and well-fed type, and will change into the stage of abundant type in 1990, of comfortable type in 2000 and the stage of rich type in 2020.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    A STRATEGICAL ANALYSIS OF THE COORDINATIVE DEVELOPMENT OF THE SOCIAL-ECONOMIC AND ENVIRONMENTAL SYSTEM IN YANCHI COUNTY,NINGXIA HUI AUTONOMOUS REGION
    Zhang Xiaochuan, Che Wentao
    1989, 4(2): 158-168. https://doi.org/10.11849/zrzyxb.1989.02.007
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    In this study, the natural conditions and natural resources of Yanchi County, NingXia Hui autonomous Region and the relation between the social-economic development and environment have been analyzed. With the application of weighted digraph and pulse processes, the author has studied this county's social-economic and environmental system quantitatively. By forcasting and comparing the states and behaviour of the system after it has empted a variety of development strategies, the author suggests some measures and development strategies for the coordinative development and optimum Tuning of the system.In accordance with native conditions and circumstances, seven models are established. Model 1 is built according to the traditional development pattern. ?The results of the predictions show that the traditional development pattern not only deteriorates the social-economic status of the county steadily, but also destroys the natural environment seriously due to desertification. To counter the factors which lead to noxious cycle of the system, the author takes several relevant improvement measures and adjusts development strategies for improving the state of the system.In order to find out the sensitive adjusting and controlling factors so as to optimize the whole system and coordinate the development, the author adjusts different development strategies from the viewpoints of population, animal husbandry, farming, forestry, rural living energy, sideline, and build models 2-6. By comparing the results of the predictions of the five models, on one hand the sensitive adjusting and controlling factor, namely mal hasbandry, is obtained and on the other hand the interacting and promoting relation among different adjusting strategies is analyzed. Thereafter, model 7 is built for the optimum running of the whole system.The conclusions of this paper show that weighed digraph and pulse processes are suitable tool for modelling complex systems like social-economic and environmental system. The adjusting and controlling strategies given by this paper are constructive for the coordinative development of social-economic and environmental system in Yanchi county.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    THE APPLICATION OF THE CATASTROPHE THEORY TO SOIL EROSION STUDY——TAKING XINGGOU COUNTY OF JIANGXI PROVINCE AS AN EXAMPLE
    Zhang Yushu, Zhu Jinjiao
    1989, 4(2): 169-176. https://doi.org/10.11849/zrzyxb.1989.02.008
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    In this article, an attempt is made to apply the catastrophe theory to soil erosion study. Xin Gou county is chosen as an example. There soil erosion evolution is depicted and its characteristics are explained with the theory of catastrophe. For quantitative study, a cusp catastrophe model is used to simulate the evolution process of soil erosion.On the basis of the model, some characteristics of soil erosion can be pointed out. They are catastrophe, binodality, hysteresis and divergence. A classification is made according to differnt erosion states, namely unstable erosion state, stable erosion state and the state with potential catastrophic danger. From this point of view of catastrophe theory, under the conditions of limeted labour and funds, the soil conservation measures should be focused in the areas where the soil erosion degree belongs to the light and medium categories.
  • Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    THE POPULATION PRESSURE UPON THE NATURAL RESOURCES AND ECOLOGIC ENVIRONMENT ON THE LOESS PLATEAU AND THE WAYS OF ITS ELIMINATION
    Li Changhua
    1989, 4(2): 177-191. https://doi.org/10.11849/zrzyxb.1989.02.009
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    Three problems are discussed in this paper.(1) The primary cause of destruction of the natural resources and ecologic environment on the Loess Plateau is the population pressure.(2) The management and exploitation of the Loess Plateau are necessary and effective, but it is difficult to completely solve the population pressure problem within a few decades.(3) The population migration to the coastal and the Yangtze River Corridor's economic developmental areas may be an important was to relieve the population pressure in the Loess Plateau negion.