Table of Content

    25 August 1999, Volume 18 Issue 3 Previous Issue    Next Issue
    Original Articles
    A Research of Environmental Conflict Factors at the North of the Yellow River
    YANG Qin ye, ZHANG Hao xi, YE Qing hua
    1999, 18 (3):  193-200.  doi: 10.11820/dlkxjz.1999.03.001
    Abstract ( )   PDF (297KB) ( )   Save
    Situated at the north of the Yellow River, the contiguous area of Shanxi, Inner Mongolia and Shanxi province is playing an especially important role in the development of energy industry throughout the country and the distribution of energy base construction. But there are many acute ecological problems all through the ages because of the co-existing situations of both the affluent resources on energy and mine and the fragile ecological environment such as drought, moving sand by wind, and serious soil erosion, etc, which show separate relationships. With the exploration of coal and charcoal resources and the rapid development of energy base construction in recent years, a series of new environmental conflicts are produced and have become very important impediments of the regional sustainable development. This paper analyzes the situations of crisis environment and the factors of environmental conflict and provides approaches to alleviating environmental conflict to facilitate regional sustainable development.
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    The Research on the Comparison between Arrangement Migration and Development Migration ——The Arrangement of Chinese Reservoir Migration
    ZHU Mei rong
    1999, 18 (3):  201-207.  doi: 10.11820/dlkxjz.1999.03.002
    Abstract ( )   PDF (418KB) ( )   Save
    Since China was established, the arrangement of Chinese reservoir migration has experienced a changed process from the arrangement migration to development migration. Analyzing, comparing and researching the essential difference of these two kinds of migration will help realize and grasp the basic laws of reservoir development migration under the socialist market economic conditions. We can follow laws, approach subjects and promote the development of reservoir development migration.
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    The Relationship between City and Regional Development: A Multi-Dimension Research
    YAO Shi mou, TANG Mao lin, LI Chang feng, ZHU Ying ming, GUAN Chi ming
    1999, 18 (3):  208-214.  doi: 10.11820/dlkxjz.1999.03.003
    Abstract ( )   PDF (705KB) ( )   Save
    China is now entering into a new phase in the development of industrialization and urbanization. Since 1979, the urbanization process has been more rapid than it had before, and the relationship between city and regional development is strengthened. The paper discusses the relationship between city and regional development from three main aspects: 1) research background; 2) how to enhance the study of the relationship between city and regional development; and 3) the regional spatial development in the urbanization process.
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    Change of Land Degradation in South China and Impacts of Human Activities
    LU Jin fa
    1999, 18 (3):  215-221.  doi: 10.11820/dlkxjz.1999.03.004
    Abstract ( )   PDF (777KB) ( )   Save
    Three pilot areas are chosen for study on temporal change of land degradation in South China. Based on criteria for land degradation assessment an interpretation of land use, vegetation, surface material and erosion morphology is made by using aerial photos of two periods, and with the help of GIS an assessment of land degradation is carried out by using Fuzzy model. Comparison of land degradation maps between 1950’s and 1980’s shows that changes of land degradation are different from one area to another because of differences of human activities. In the mountain area slightly affected by human activity very slightly degraded land markedly increases due to soil conservation and the remained degraded land tends to decrease from 1950’s to 1980’s. The reverse situation happens in the area heavily affected by human activity and morphologically characterized by lower undulating hills. Development of land degradation there manifests itself as drastic reduction of non degraded land and severely and very severely degraded land as well as increases of slightly and moderately degraded land. In the low mountain and hill area moderately affected by human activity some increase of moderately degraded land is observed at the expense of marked decrease of non degraded land. It is proved that the changes of land degradation are mainly attributed to reclamation of land and depletion of vegetation led by adverse human activities. In South China most severe land degradation has taken place neither in the mountain area slightly affected by human activity nor in the area heavily affected by human activity and morphologically characterized by lower undulating hills but in the low mountain and hill area moderately affected by human activity.
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    A Research on Development of Township and Changes of Modern Rural Community of Southern Jiangsu Province
    FENG Jian, ZHANG Xiao lin
    1999, 18 (3):  222-229.  doi: 10.11820/dlkxjz.1999.03.005
    Abstract ( )   PDF (735KB) ( )   Save
    Rural community refers to a certain rural region which has steady and integrated structure, function, characteristics of dynamic evolution and some sense perception of social identification. A rural community is a basic component unit and spatial miniature of rural society. Research on rural community contributes to insight into organizational structure, spatial characteristics and mechanism of its changes. The history and characteristics of development of Southern Jingsu’s modern township are reviewed first. Then, the influence of development of modern township on the changes of Southern Jiangsu’s rural community is analyzed from five aspects of rural community as follows: idea, economy, culture, settlement and guarantee. In the end, some trends of construction of modern township and development of rural community of Southern Jiangsu Province are proposed.
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    A Study on Demacation Indexes between Subhumid and Semiarid Sectors in China
    ZHANG Jun tao, LI Zhe
    1999, 18 (3):  230-237.  doi: 10.11820/dlkxjz.1999.03.006
    Abstract ( )   PDF (849KB) ( )   Save
    The climate, vegetation, soils, and farming are obviously different between subhumid and semiarid areas. For a long time, because of the difference of principles, methods, and indexes, there is divergence about the boundary line. The indexes, which have been used in physico-geographical regionalization in China, have been compared. We can see that the aridity or humidity indexes, aerial relative humidity, vegetation, soil and its sectional texture, and crops had been used as the major indexes. The formula, calculating the aridity or the humidity indexes, is based on experience. The formulas computing the potential evaporation are different. At the same time, the data comes from a year, so they can not comprehensively mirror the seasonal change of aridity and humidity. The real moisture condition can not be reflected either. The aridity and humidity of a region should be measured on the basis of moisture balance. But its function in regionalization was limited owing to some components and parameters. In views of the above-mentioned facts, the author put forward the indexes, which should be considered emphatically when a boundary line between subhumid and semiarid sectors is delimited. According to some principles and methods, it will be the prerequisite for the demarcation between subhumid and semiarid sectors to integrate the comprehensive and the dominant factors, and select the indexes well.
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    Studying Carbon Storage Spatial Distribution of Terrestrial Natural Vegetation in China
    WANG Shao qiang, ZHOU Cheng hu, LUO Cheng wen
    1999, 18 (3):  238-244.  doi: 10.11820/dlkxjz.1999.03.007
    Abstract ( )   PDF (764KB) ( )   Save
    The role of terrestrial ecosystems on global carbon cycle dynamics is more and more noticed. At present, the rate of forest cover in China is 13 92% and it will be 15% at the end of twentieth century. This is more contribued to the balance of global carbon. However, carbon fluxes of terrestrial ecosystems are not accurately defined in China, and people do not recognize enough its importance to global climate change. Not defining accurately the carbon storage of Chinese vegetation and NPP has caused a large difference in carbon flux of terrestrial ecosystems in China. This paper adopts measured data in site and appliys technique of GIS, to acquire cover data of natural vegetation in China, and to calculate carbon and carbon density of every type of natural vegetation. The study establishs a database of terrestrial natural vegetation biomass in China. Meanwhile, we have researched simply the spatial distribution of terrestrial natural vegetation carbon storage in China Then, forest is the main body of natural vegetation in carbon cycle. This paper can provide basic data and analysis methods for global change research and scientific support for policy determination of CO 2 emission in China.
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    An Analysis on the Changing Trends and Affecting Factors of Foodgrain and Oilseed Production in Tibet Autonomous Region
    NNIMA Tashi
    1999, 18 (3):  245-254.  doi: 10.11820/dlkxjz.1999.03.008
    Abstract ( )   PDF (515KB) ( )   Save
    The changing trends in foodgrain and oilseed production, and the affecting factors of that trends are analyzed in this paper. It is shown that the per unit yield is the predominant driving force of foodgrain and oilseed production in Tibet. Sustainable increase of the per unit yield of foodgrain and oilseed production, and following countermeasures should be adopted: application of improved crop varieties, promotion of the cultivation system, improvement of the low yield land and building up of the capacity for irrigation system for cultivated land.
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    A Proof of Davis’ 2\+n law as a Special Equivalent of the Three-parameter Zipf Model
    CHEN Yan guang, LIU Ji sheng
    1999, 18 (3):  255-262.  doi: 10.11820/dlkxjz.1999.03.009
    Abstract ( )   PDF (895KB) ( )   Save
    The Zipf’s model with three parameters, P(r)=C(r-α) - d z , is deduced from Davis’ 2 n law: a i=a i+n ·2 n, f i=f i+n ·2 -n , by means of a series of mathematical transformation, where d z proves to have some nature of fractal dimension (D) because d z=1/D. The 2 n rule is generalized to δ n rule and δ represents an arbitrary number which is greater than one, namely δ >1. The relationships between δ and the fractal dimensions of city size distributions can be expressed as D=lnδ/ln2 : when δ =2, we have d z =1, so the 2 n rule is only a special case of the three parameter Zipf’s model. The result of the demonstration of Davis’ law as an equivalent of the generalized Zipf’s law is illustrated and verified by some examples including the data in which 2 n rule of urban systems is discovered.
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    Quantative Study of Airborne Allergic Pollen
    HUANG Ci xuan, CHEN Zhi qing, MA Rui
    1999, 18 (3):  263-266.  doi: 10.11820/dlkxjz.1999.03.010
    Abstract ( )   PDF (177KB) ( )   Save
    Certain airborne allergic pollen can cause respiratory tract disease or skin disease to some people. This paper conducts a quantative analysis on year round airborne pollen collected by using Cour’s interceptor from three experimental stations in Beijing, Yucheng and Taoyuan and identifies principal airborne allergic pollen types in these areas and the occurrence time of maximum pollen concentration in a year. Based on concentration, proportion, and radius of allergic pollen as well as volume of air inhaled by adults per week averagely, the amount of allergic pollen inhaled within a week by adults during the maximum pollinating period can be further calculated so as to provide quantitative data for prevention and control of allergic pollen disease. Research results indicated that the most important allergic pollen in Beijing and Yucheng of North China Plain includes that of Artemisia and Gramineae plants, belonging to summer-autumn type of allergic pollen. Pollen of Artemisia plants in Beijing area is found to be distributed in April to October, and peak occurs in August to September whereas peak of Gramineae pollen is in September. Since grain crops grow more extensively in Yucheng district, peak of Gramineae plant pollen occurs in June. The principal allergic pollen in Taoyuan locating in subtropical climatic zone consists of spring type Cunninghamia, summer-autumn type Canabis and Artemisia. Of which the amount of Cunninghamia pollen is very great, distributing mainly in March, the week observed the highest pollen concentration of Canabis and Artemisia plants is in September.
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    The Water Quality and Environment Background Remote SensingMapping and Analysis in Jilong River Watershed, Taiwan
    XU Jun, FU Su xing, HUANG Xuan
    1999, 18 (3):  267-273.  doi: 10.11820/dlkxjz.1999.03.011
    Abstract ( )   PDF (757KB) ( )   Save
    With the development of the remote sensing, it became more and more important in environmental monitoring. Especially in water quality remote sensing and environment background mapping, there has been a lot of work to be done. But water quality is relative to the environment and human’s activities. The suspended sediment is one of the most important aspect of the water quality, so in this paper, some work about environmental background mapping and its relationship to the suspended sediment in Jilong River, Taiwan, is done. First, according to the suspended sediment concentration measured in field and the standard provided by Environment Office of Taiwan, the river suspended sediment concentration is divided into four levels. The grades of all the river are acquired by use of maximum likelihood classification of SPOT band 1 and 2. Then, the environmental background is acquired by supervised classification with TM and SPOT images based on the landuse map and other statistical information. The predominant background is forest, about 41% of the total area. The suspended sediment map and the environmental background map of Jilong River show that the suspended sediment concentration is lower in upper reaches of the river where the land is mainly forest, while it is higher in lower reaches of the river where the river flow through the city. By calculate the proportion of the length of every grade of water bordering upon every kind of environment background, we find that the suspended sediment concentration is related to the land cover and city pollution. The source of the suspended sediment is mainly the polluted warter poured from the city.
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    An Introduction to Intelligent Transport System and the Countermeasure of Its Development in China
    YANG Yin kai
    1999, 18 (3):  274-278.  doi: 10.11820/dlkxjz.1999.03.012
    Abstract ( )   PDF (369KB) ( )   Save
    Intelligent transport system is a focal point in transportation and communication research. In the paper, the author gave an introduction of the concept, the target, and the content to intelligent transport system and introduced the basic ITS development situation in America, Japan, EC, Singapore, South Korean and Hongkong. At last, the author analyzed the development situation of China ITS and gave four countermeasures.
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    A Study on Exploiting the Folk Custom Tourist Resources of Ningxia Huizu
    TAO Wei, LIU Feng, LIU Jia ming
    1999, 18 (3):  279-284.  doi: 10.11820/dlkxjz.1999.03.013
    Abstract ( )   PDF (372KB) ( )   Save
    How to exploit folk custom tourist resources is an important problem, which concerns to the local and nation feature of country and region tourism. Folk custom tourist will be one of main trends of modern tourist. Ningxia Huizu autonomous region is the only Huizu autonomous region at provincial level in China. The unique and abundant folk custom tourist resources of Ningxia lay the firm foundation to develop folk custom tourist. The paper carrys out the preliminary research of how to exploit Ningxia folk custom tourist resources and puts forword a tridimentional exploiting network of Huizu custom tourist. First, plan to exploit Yinchuan and its environmental tourist areas; then, exploit middle-south tourist areas including Tongxin religion tourist area, Jingyuan Huizu village tourist and Hongle mansion culture tourist area.
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