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  • Original Articles
    The Process of Water-heat Dissipation and Water saving Regulation in Agroecosystem
    YU Hu ning
    2000, 19(1): 1-8. https://doi.org/10.11820/dlkxjz.2000.01.001
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    The situation of water resources deficiency is very scrious in the large areas of the arid, semi arid even semihumid of Huabel Plain, endangering the agricultural sustainable development. Based on the theory of SPAC which develops very fast in recent years, the linkage and division between the process of SPAC and ecological process are discussed on this paper. The concept of WUE is then generated from the node of this two proceses. It also has discussed the forcing functions of interfaces, water potential and water transfer resistance, water stress of crop and inducement and gain of overshoot mechanism, highly nonlineal and coupling of interface processes are discussed too. Through the studies on this paper, the theory and practical measurement of the corrdination between the regulation water heat transport interface and the mechanical regulation of ecological process provided in order to solve the problem of deficiency water resources and increase the sustanable production and water use efficiency. The paper also provides basement and practical way to carry out the sustainable development of agroecosystem and agriculture.
  • Original Articles
    Decision Support System for Regional Development and Water Resources Coordination
    WANG Jin feng, CHEN Hong yan, WANG Zhi yong, SHI Pei zhong, WU Ji lei
    2000, 19(1): 9-16. https://doi.org/10.11820/dlkxjz.2000.01.003
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    Regional development is linked closely with water resources in many regions, many factors interact in a coordinating and decision making process. Currently, there are two typical spatial decision support system based on GIS: one is Leung’s system (Yee Leung and Wong, 1993): consisting with several subsystems: knowledge base, inference engine, input and output interface, etc. The system’s infrastructure is completed and widely used, the decision is based on fuzzy clustering algorithm; another is Lin’s (Lin. et al, 1997): the decision depends on fuzzy weighting and scoring, the system is designed on internet base, the users could interact with the system easily through internet. The decision theory for the both system could be grouped as factor analysis, a one way linear decision process. In fact, many decisions is a repetition and comparative process, there are feedback and dynamic mechanisms inside. The decision support system based on the feedback dynamic mechanism should be more close to the real world than the one with one way linear decision. In the paper, a decision making system based on a spatial temporal operation theory is suggested. In technical aspect, we have designed a transparent and interactive multi layer decision interface to realize the theory and for practice use.
  • Original Articles
    The Study on Urban Water Supply and Consumption of Huabei Plain
    JIN Feng jun
    2000, 19(1): 17-24. https://doi.org/10.11820/dlkxjz.2000.01.004
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    As is known to all, Huabei plain is a area of water shortage. The situation of water shortage is serious in some urban areas, which affects the regional sustainable development. In this paper, the relationship between urbanization and water use in Huabei plain is studied. The results indicate that the urban water consumption in this area increased very quickly in past two decades, which is key factor resulting in the water shortage. The factors determined the growth of water consumption are different among the cities. According to the water consumption feature, the cities are classified into four types. In order to mitigate the contradiction between water resource supply and water consumption, it is important to adjust the urban industrial structure and develop the techniques for saving water in production. In addition, it is also necessary to establish regional water supply network.
  • Original Articles
    The Simulation Using Monte Carlo Method in Vegetation Canopy Remote Sensing
    CHEN Liang fu, XU Xi ru
    2000, 19(1): 25-34. https://doi.org/10.11820/dlkxjz.2000.01.005
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    Monte Carlo method is a randomly statistic method, and this method, which needs a big number of samples, has been widely applied in the vegetation canopy remote sensing because of the technological development of computer. In this paper, authors summarized the application of Monte Carlo method on the simulation of BRDF and hot spot effect in the vegetation canopy, and gave comments in detail on the parameters: LAI, LAD, G function, gap probability, free length of photon, and leaf phase function. They describe the geometrical structure of canopy.
  • Original Articles
    Problems and Main Countermeasures of High Technology Industry in China
    LUAN Wei xin, WANG Mao jun
    2000, 19(1): 35-40. https://doi.org/10.11820/dlkxjz.2000.01.006
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    On the base of expounding divides and fundamental characteristics of high technology industry, the paper analyses emphatically the main problems that remains in the development of high technology industry in China. Finally the paper puts forward five countermeasures about developing high technology industry in China: Firstly seek field results of high technology industry; Secondly guide the adjustment of high technology industry by economic policies such as tax revenue; Thirdly develop three spiral module of high technology industry; Fourthly multi channel invest; Fifthly perfect the mechanism of risk invest.
  • Original Articles
    Evaluation on Grades of Subsistent Resources for Sustainable Agricultural Development in Hunan Province
    LI Hui
    2000, 19(1): 41-49. https://doi.org/10.11820/dlkxjz.2000.01.007
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    Based on the analysis of the farmland resources, water resources, coordination between water and farmland, climate resources, creature resources, and the quality of biological environment etc. The author has studied the characteristics of the subsisent resources in every county of Hunnan Province, and has probed into their grades, types and regions. The basic conclusions are as follows: the subsistent resources of the mountainous areas in the east, south and west of the province are superior to those in the hill basin areas and the plain of the Dongting Lake area, the subsistent resources in the county of low grade population density are superior to those in the county of high grad population density. As a result, this article probes into advantage and defect of subsistent resources in every county of Hunnan Province, in order to decide resources potency of sustainable development in agriculture.
  • Original Articles
    Strategic Thinking of Sustainable Development in the Yellow River Economic Zone
    AN Xiang sheng, ZHANG fu ming
    2000, 19(1): 50-56. https://doi.org/10.11820/dlkxjz.2000.01.008
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    Main part of the Yellow River economic zone is located in the Yellow River basin, china. Based on the analysis of resources, environment and other question, the author points out that sustainable development strategy is an inexorable choice for the sound fulfillment of the construction of the Yellow River economic zone. Finally, the strategic target, the main principle and countermeasure of sustainable development in Yellow River economic zone are put forward in this paper.
  • Original Articles
    The Basic Characteristic and Macroscopical Development Countermesures of Motorization in China’s Cities
    LIU Xin, YANG Yin kai, Lü Xin
    2000, 19(1): 57-63. https://doi.org/10.11820/dlkxjz.2000.01.009
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    Motorization is the development course of motor-vehicle in use and possess. Motorization contains the innovations of the transportation types and transportation technology. There is a mutual “push pull” relationship between the motorization and urban economy, between the motorization and urban spatial structure, between the motorization and stratum scatter, between the motorization and environment. In the paper, the basic characteristics and the macroscopical background were given. The basic countermeasures of China’s urban motorization were given from analyze the relationship between the motor vehicle industry and urban transportation system.
  • Original Articles
    Study on Urban Poverty and the Counter Measures in China
    HUANG Ji qiao, DU De bei
    2000, 19(1): 64-69. https://doi.org/10.11820/dlkxjz.2000.01.010
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    With the penetration of the reform, urban poverty is becoming deep and extension in China since 90 years. Induced the contemporary characters of urban poverty, this paper points out the internal cause of urban poverty is the adjustment of economic structure and industry structure, the lad of social insurance system, and poverty people’s quality. Based on these aspects, the paper advances some effective measures on curing urban poverty.
  • Original Articles
    The Inventory and Progress of Cultural Landscape Study
    TANG Mao lin
    2000, 19(1): 70-79. https://doi.org/10.11820/dlkxjz.2000.01.011
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    The importance of culture upon the land has long been a leading theme in cultural geography, and cultural landscape has exercised strong attractions on geographers, particularly those of Berkeley School. The author believes that cultural landscape can be defined as landscape created intentionally by man to satisfy some of his needs, taking use of materials in the environment. In the following parts of the paper, the author gives us a thorough discussion of the inventory and progress of cultural landscape research from six aspects: 1) evolution; 2) perception and interpretation; 3) constitution; 4) classification; 5) ecology and 6) conservation and planning.
  • Original Articles
    A Tentative Discussion on the Resources-oriented Patterns in Regional Sustainable Development
    XIE Qiang WANG Hong ya
    2000, 19(1): 80-87. https://doi.org/10.11820/dlkxjz.2000.01.012
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    As one part of the Earth surface, region contains something of the geographical environment, so it surely possesses the environment structure, simultaneously it is a carrier for various resources and it also possesses the resources structure. The resources structure and environment structure impact on each other and they constitute the special resource environment structure in one region. The two kinds of resources which are physical resources and human resources, the physical environment and human environment, they all impact on one another, so they constitute kinds of resource environment structures. Although the different have different functions, only what lies in dominant position can be likely to orient the regional development. Based on those and from the viewpoint of sustainable development, this paper brings forward three kinds of resources oriented patterns, they are physical resources oriented patterns, human resources oriented patterns and compositive resources oriented patterns. Each kind of pattern has been discussed, to which subpatterns are gived. At last the dynamic transformation among the different kinds of resources oriented patterns has been analysed.
  • Original Articles
    The Research and Application to Some Old Maps of Beijing in the End of Qing Dynasty and Republic of China
    WANG Jun, SUN Dong hu, ZHOU Rong
    2000, 19(1): 88-93. https://doi.org/10.11820/dlkxjz.2000.01.013
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    This paper reviews several old map of Beijing surveyed and printed from 1907, the end of Qing dynasty, to 1948, and the end of Republic of China, scaling from 1∶8500 to 1∶100000, classed from topographic maps to urban plan maps. From these old maps, we could draw the information of the modernization process of Beijing City and its suburban from geographical approach. With the application of digital image process technique, the old maps could be scanned and registrated by matching to standard topographic map.