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Table of Content

    24 January 1997, Volume 16 Issue 1 Previous Issue    Next Issue
    Original Articles
    ECONOMIC DEVELOPMENT AND GEOGRAPHICAL PROGRESS
    Zheng du
    1997, 16 (1):  6-10.  doi: 10.11820/dlkxjz.1997.01.002
    Abstract ( )   PDF (192KB) ( )   Save
    Geography can play an important role in implementing the blueprint and planning of the China’s Agenda 21, which includes four parts: overall strategy for sustainable development, sustainable social development, sustainable economic development and sustainable ecological development. According to the object and nature of geography as well as its integrative and regional features, geographers may make efforts in such aspects as the man land relationship coordinating, regional sustainable developemnt, global environmental issues and geographic information technique. With hopes and opportunities, as well as difficulties and challenges, the countermeasures of geography are to keep up with the widespread intergrative trend of modern science, strengthen intergrated research, meet the needs for construction, develop talent for resolving practical problems, promote geographical education and train transcentury high level talents.
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    THE MAIN FIELDS OF STUDY ON ENVIRONMENT HEALTH AND DEVELOPMENT IN 21TH CENTURY IN CHINA
    Wang Wuyi, Li Ribang, Tan Jian’an
    1997, 16 (1):  11-14.  doi: 10.11820/dlkxjz.1997.01.003
    Abstract ( )   PDF (263KB) ( )   Save
    The main fields of the study on environment human health and development in 21th Century in China are briefly discussed in the paper. The main fields include: (1) To control the endemic diseases caused by chemical factors in the environment, the protective methods which is applicable to local environmental conditions must be adopted;(2) The risks to human health from contaminants in water, air, food or commercial products have arised more attention, the study of human populations exposed to potential environmental hazards should be developed; (3) Some citizens are more at risk from urbanization due to the change of lifestyle factors, therefore, the way to protect human health in the process of economic development and urbanization should be explored.
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    REGIONAL SUSTAINABLE DEVELOPMENT: THEORIES AND THEIR APPLICATION
    Qin Yaochen, Chen Shimin, Wang Xi, Lu Xiangqian, Li Zhigang
    1997, 16 (1):  15-23.  doi: 10.11820/dlkxjz.1997.01.004
    Abstract ( )   PDF (822KB) ( )   Save
    The theoretical construction of regional sustainable development is an extremely important problem at present. This problem can be divided four parts: science system, theoretical basis, elementary theory and core theory, this paper discusses the elementary theories and their applications in the practice of regional sustainable development in detail. These elementary theories includes the modern man land coordination theory, the regional PRED system theory, the regional development cybernetics and the man land interactive potential theory.
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    FORECAST AND COUNTERMEASURES OF THE CHANGE OF THE CULTIVATED AREA OF CHINA
    Jia Shaofeng, Zhang Haoxi, Meng Xiangjing
    1997, 16 (1):  22-30.  doi: 10.11820/dlkxjz.1997.01.005
    Abstract ( )   PDF (674KB) ( )   Save
    How about the future trends of cultivated area change in China? Figures provided by some materials differ from each other dramatically. In this paper, We discuss the relationship of the decrease of cultivated area with many variables such as total population, urban population, rural population, gross domestic products, primary industry growth, secondary industry growth and tertiary industry growth, et.. It is proved that the decrease of cultivated area is intensively related to population growth and economic development and that the urbanizition not only dosen’t aggravate the decrease of cultivated area but also do economize on cultivated area. Our forecast is that the cultivated area of China will decrease to 10.741 ̄10.831 million hectares by 2035 when the population peak is reached, which compared to 12. 8 million hedtares in 1985 decrease by 7.8%, and return to 10939 ̄10969 million hectares in 2050 because of the decrease of total population and growth of urbanizition level.
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    TRENDS AND BASIC CAUSES OF THE REGIONAL PATTERN CHANGES IN CHINA’S GRAIN PRODUCTION SINCE 1950’S
    Lu Qi, Lu Minglun
    1997, 16 (1):  31-36.  doi: 10.11820/dlkxjz.1997.01.006
    Abstract ( )   PDF (610KB) ( )   Save
    The traditional grain transportation pattern in China, which is characterised as transporting grain produced in south to north, has been obviously replacd by a new pattern known as ‘transparting grain produced in north to south’. The analysis based on statistical materials shows that this change results from the movement of grain production centers from south to north. The causes which push the production centers to north are various, however, the food demand pressure, the technological advance and the economic system reform are the basic ones.
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    UTILIZATION AND DEVELOPMENT OF THE ANCIENT COURSE OF THE YELLOW RIVER
    Zhang Yifeng, Ning Yuan
    1997, 16 (1):  37-43.  doi: 10.11820/dlkxjz.1997.01.007
    Abstract ( )   PDF (267KB) ( )   Save
    The ancient Yellow River once took over the course of the Huaihe River in historic period. It was formed a closed dune by the impact of the sediment of ancient Yellow River. The region of the ancient Yellow River is a developing area with conves land forms, temperate climate, sandy soil. Sufficient sunshine, dense population and lack of water resource. As a potential agriculture, the ancient course of the Yellow River has many conditions of green foods production. Exploitation of sufficent land resources and labour force is the fundament of economic development in this region.
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    FEATURE AND EVALUATION OF NATURAL DISASTERS AND ENVIRONMENT IN THE COASTAL ZONES OF CHINA
    Zhong Zhaozhan
    1997, 16 (1):  44-50.  doi: 10.11820/dlkxjz.1997.01.008
    Abstract ( )   PDF (500KB) ( )   Save
    This paper discussed the distribution of coastal zones and the features of natural disasters that appear in this zone. Through assessing the natural environment, the developing tendency of coastal zones was predicted and the correspondent measures to be taken in the 21st century were pointed out. 1) The coastal zone is the zone where land and water interfere, i.e. the transition area between land and water. Stretching from Yalujiang River Embouchure of Liaoning Province ( in the north) to Beilun River Embouchure of Guangxi Zhuang Autonomous Region (in the south), China’s coastal line has a length of 18000km. China also has over 5000 islands with a coast line of about 14000km long. Apart from two main kinds of coasts, plain coast (sandy coast) and mountainous coast (rocky coast), some special coasts formed by living things, e. g. coral reef coast, mangrove coast and reedy coast are also existing. 2) Being a kind of ecotone, coastal zones present the characteristics of obvious weakness, i.e. strong endogenic and exogenic force and low resistance to them, which results in frequent natural disasters. Erosion and accumulation, Typhoon and storms, earthquakes, rainstorms, red tides, sea ice, etc., are the common disasters that often appear in these zones. Coastal zones are very sensitive to climate changes. With the climate warming up in the 21st century, the sea level will rise and the storm tides will increase, coastal zones will be seriously threatened by floods and storm tides, serious measures should be studied and taken in advance. 3) Society and economy are relatively advanced in coastal zones with over 90% of big cities, about 50% of population and 55% or so of national income distributed in this area.. Coastal zones are very rich in natural resources, e.g. oil, natural gas, mineral resources, land, intertidal zone, harbors, sea salt, aquatic resources, tourism, mangrove, reed, marine algae, etc.. Because of unreasonable human activities, natural resources are decreasing and the ecological environment is worsening, which will become the obstacle to the development of society and economy in China. Studying the features of natural disasters, assessing the natural environment of the coastal zones, help us obtain a better understanding of natural disasters, natural resources and environment in this zone, which is very important for the evaluation and exploitation and utilization of natural resources, and for the prevention and treatment of natural disasters.
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    A STUDY ON THE RELIABILITY OF TREE RING DATA ——AN EXAMPLE OF HUASHAN PINE FROM SHAANXI
    Wu Xiangding, Shao Xuemei
    1997, 16 (1):  51-56.  doi: 10.11820/dlkxjz.1997.01.009
    Abstract ( )   PDF (303KB) ( )   Save
    Using tree ring chronologies of width, maximum and minimum desity for Huashan Pine from Huashan, Shaanxi, and the tree growth model, the response of tree radial growth to climate factors (e.g., air temperature and precipitation) was studied. The results show that various growth indices can be confirmed by each other, which indicates that tree ring indices are reliable proxy data for climate change sutdy. This emphasizes that it is necessary to use various tree ring data to perform study and provides a solid basis for climate reconstruction.
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    BUILDING WEATHERING AND THE GEOMORPHOLOGY STUDY
    Zhu Liping
    1997, 16 (1):  62-70.  doi: 10.11820/dlkxjz.1997.01.011
    Abstract ( )   PDF (365KB) ( )   Save
    Stone weathering is one of the important contents of geomorphology, but the study of its mechanism can be also applied to the weathering of building materials and their resistance to the environmental damage. This paper, based upon some documents related to the weathering of the building materials, suggested that the thought and experiments of the weathering of the building materials are very helpful to the weathering theories of the geomorphology study. With the development of the environmental pollution, the study of the stone weathering not only aim at geomorphology theories, but also serve the applying of the building weathering and its protection.
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