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  • Original Articles
    Zheng Du Yang Qinye
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    Professor Huang Bingwei, the academician of the Chinese Academy of Sciences (CAS), the Honorary Director of the Institute Geography, CAS, and the Honorary President of the Geographical Sociaty of China, is an outstanding geographer, whose contributions to geography have gained national and international recognition. In accordance with the features and laws of the discipline, has paid close attention to international trend and direction of the geographical study, advocated interdisciplinary research across the natural and social sciences, emphasized integrated studies, energetically introduced new ideas, new technologies and new methods, attached importance to the combination of theory with practice, thought highly of bringing geography to serve economic construction, especially agriculture, and made notable contributions to the development of contemporary geography and international cooperation as well as improvement of research level of geographical science in China. The integrated studies in geography carried out by Prof.Huang are dealt with in this paper.
  • Original Articles
    Guo Laixi, Lu Dadao
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    Academician Wu Chuanjun is a famous and outstanding geographer at home and abroad. He had ever gloriously worked as the vice president of The International Geographical Union for two terms (1988 ̄1996). By now he has continuously been the president of The Geographical Society of China. By the time of his 80th birthday, he has published three main works on “The Man Earth Relationship and Economic Allocation”, “The Contemporary Economic Geography” and “The Economic Geography of China”, obviously expressing his academic achievements. His theoretical thought is so active that he is regarded as a mature scholar by the Chinese geographical circle. He lives up to the great guide of our modern Chinese geography. In the renaissance of human geography, he has been playing a chief role and setting up the historical meritorious and beneficent deeds. This paper briefly introduces his creative ideas on the man earth relationship and economic allocation as well as his prominent contribution to geographical science, especially to human geography (including economic geography, agricultural geography, science of land utilization, comprehensive exploration of resources and territorial planning) and international academic exchange of geography.
  • Original Articles
    Liu Shengjia
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    On the occasion of academician Wu Chuanjun’s eightieth birthday (1918 ̄1998), this paper takes his human geographical thoughts and man nature relationship system theory as a subject for congratulation. He raised a revolution on the definition and the boardline science quality of economic geography. Systematically, he elucidated the man nature relationship, the man nature relationship system and the thoughts of man nature relationship regional system, and founded the scientific methodology of combining theory with practice for the rejuvenation of Chinese human geography. In the field of geography, he elucidated the law that geography has been shifting to hmuan geography. Wu is one of the most outstanding masters in the field of geography in China and also is a famous geographer in the world.
  • Original Articles
    Zhang Hongye
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    Based on the analysis on the conditions of land resources, the changing trend in the requirements of land for various purposes, the structure of land use and the manner of land use is discussed in this paper. The changes in land use are determined by both social economic development and conditions of land and water resources. In this paper, the impacts of the changes in land use on environment and sustainable agricultural development are also discussed. Policies and measures which can help to achieve the purpose of using land resources effectively are proposed.
  • Original Articles
    Zhang Wenzhong
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    This paper focuses on a study of the targets and methods of regional policy, and their roles in the regional economic development from the angle of economic locational theory. Furthermore, it raise up some viewpoints: (1) governments at different levels or policy making departments, through locational policy, such as improvement of investment environment, Locational allowance and inclination of locational policy, can induce or confine space choice of individual or enterprise’s behavior in economic activities and implement the effective, harmonious and continuous development of national territory; (2) The main functions of locational policy in the regional economy can be described as fellows. First, it can make the margins of profit space expand or narrow; second, it can speed or slow the concentration or decentralization of industry; third, it stimulates to form new industrial locational points, and it reduces the difference of regional economy.
  • Original Articles
    Dang Anrong, Yan Shouyong
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    The temporal variation of China’s farmland area and grain crop sown area sinces the year 1949 are studied comprehensively in this paper. Supported by the database of China’s national grain production, the author studies the temporal variation characteristics of China’s farmland area and grain crop sown area quantitatively in two aspects: temporal variation tendency and temporal variation mechanism. Based on the temporal variation regularity obtained above, China’s farmland area and grain crop sown area are predicted by “comprehensive dynamic prediction method” and “equal dimensional GM(1,1) dynamic prediction method”. The prediction result is that China’s farmland area will be 94 000 thousand hectares and China’s grain crop sown area will be 108000 thousand hectares by the year 2000.
  • Original Articles
    Zhang Jianting, Qiu Youliang
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    This article presents a review on the application of Artificial Intelligence (AI) and Expert System(ES) in Geo sciences. Although there has been much progress in Geo sciences, they still lack the right capabilities to establish information systems to solve Geo problems, and it is urgent to study and apply AI and ES technology in Geo models and Geo systems to solve complex problems in the real world. This article examines many Geo ES systems established by Geo scientists and computer scientists in recent years, and discusses them in many detail aspects, such as in methodology, technology, Object Oriented features and integration problems. Finally, This paper suggests that it is urgent to study geo information mechanism to apply Geo expert system, Artificial Neuron Network and Fuzzy theory, because they may play a central role in next generation Geo expert systems based on case reasoning provided by GIS spatial database. With the quick development of spatial information technology, there will be a overall fusion of RDBMS,RS,GIS, GPS, AI, ES and DSS. Those technologies will be integrated into Intelligent Spatial Decision Support System(I-SDSS), and gain more power to solve PRED problems.
  • Original Articles
    Wang Shaoqiang, Chen Yufeng
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    According to United States Global Change Research Program prepared by the subcommittee on Global Change Research of the Committee on Environment and Natural Resources Research, this paper simply introducs the goal, content and plan of land cover study in U.S. The USGCRP has advanced our understanding of the key global environmental science issues on the land cover changes. To understand the land cover changes in the terrestrial ecosystem, the goal of USGCRP is to understand, predict, assess and respond to the causes and consequences of the land cover changes in terrestrial ecosystem resulting from human induced and natural influences, and to provide a stronger scientific basis for the development of environment and resources. The USGCRP supports research projects to inventory the current land cover of the Earth and to document the changes; to improve understanding of the dynamics of land cover change; and to document and understand chemical, physical, and biological processes in the terrestrial and their relationship with Carbon Cycle. For land cover research of next ten years, USGCRP will face with some new challenges, such as estimation of time and space of changes in climate and land cover, region analyses of driving force of environment and social economy influence on land cover changes, comprehensive evaluation for changes in climate, land cover, social economy. Because of U. S. leading position on this field, this paper implies basically the international new tendency on land cover change study.
  • Original Articles
    Lu Changhe
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    With comprehensive analyses of the environment and natural hazards in the reaches of Yellow River, northern China, this paper determines indicators and criteria of assessing hazard environment, and formulates the division system and method of hazard environment. According to the indicators and hazard risk, 6 hazard zones, 14 classification regions and 31 sub-regions are identified in the reaches of Yellow River.
  • Original Articles
    Zhao Yuelong, Zhang Lingjuan
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    In this paper, a set of index and method on assessment of fragile environment is separately established. This is a systematic, complete, objective and flexible method of assessment of Fragile Environment. And it can be easily used in practice. At last, its practicality and accuracy are tested by using it to assess fragile degrees of environment within 26 provinces of China.
  • Original Articles
    Yang Yinkai
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    The earth system science is the theoretical basis of sustainable development strategy, but at present, the speed of the study is very slow because the object of the science and the scientific method are very complex. The coastal zone is the only link between the Land System, Marine System and Atmosphere System, and the history of human being opening up the coastal zone is very long, so the author holds that the coastal zone is the most typical region to study the earth science. In the article, the momentous current significance of study on coastal zones and the theory frame are given.
  • Original Articles
    Zhang Jiahua, Yao Fengmei
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    Fragile ecological environment is an unstable factor influencing the live supporting environment in bad ways. Taking Horqin Sandy Land as an example, this paper discusses a series of disturbance factors making impacts on landscape unstability and changes, including ecology of individuals, population ecology, ecological niche, community ecology, and ecosystem. The substance of disturbance is transmission of energy flow, matter flow, and information flow. This paper analyses the possibility to set up landscape ecology model by different ecological disturbance factors.
  • Original Articles
    Cui Fengjun, Liu Jiaming
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    Beginning with such factors as social cultural background, social economic background, ecological and social psychological background which influence tourism bearing capacity, the article puts out the tourism bearing capacity index and its arithmetic model of operation and gives out a case of its application. The authors define the tourism environmental bearing capacity as the bearing intensity of tourism destination during a period which doesn’t do harm to the present and future people in its current state and which can be accepted by the residents. The bearing intensity of tourism destination mainly includes three sub class indexes: the tourist density, the tourism land use intensity and the tourism income value. To calculate the tourism Activity Intensity in a comprehensive indicator, the Tourism Bearing Capacity index is defined by the authors as a non—dimension value which can be an assessment indicator for sustainable tourism.
  • Original Articles
    Li Yonghua
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    The speeding world-wide information revolution is exerting a deep influence on every field of the human society, including the publication of geographic periodicals, the current situation of which in China is far behind demands in such aspects as publishing circle, presentation method, distribution scope, and international exchange. Joint efforts should be input on staff training, funds increasing, norm regulating, WWW-site establishing, and new media making, etc. In such way, future geographic periodicals will have a more independent position on research activities and libraries of geography.