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Table of Content

    15 July 1990, Volume 45 Issue 3 Previous Issue    Next Issue
    AN ANALYSIS OF CHINA'S NATIONAL CONDITION AND THE DEVELOPMENT OF RURAL ECONOMY FROM THE VIEWPOINTS OF POPULATION, RESOURCES AND ENVIRONMENT
    Zhou Lisan
    1990, 45 (3):  257-263.  doi: 10.11821/xb199003001
    Abstract ( )   PDF (539KB) ( )   Save
    The aim of this paper is to probe into China's national conditions and the development of rural economy from the viewpoints of population, resources and environment. China is a vast country with eleven hundred million population, but short of per capita amount of natural resources and national income, backward in both educational and productive levels. For the time being, China is at its elementary stage of socialism, characterized by the alternation of two systems of organization and the co-existence of diversified economic sectors, thus constituting the basic pattern of China's national condition.
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    A MODEL FOR INTERREGIONAL TRIP DISTRIBUTION IN CHINA
    Yang Qi
    1990, 45 (3):  264-274.  doi: 10.11821/xb199003002
    Abstract ( )   PDF (738KB) ( )   Save
    In this paper, following issues are discussed: division of travel zones, representation of trip distribution, a method of searching shortest path models of travel demand, trip distrihu-tion and trip assignment on transport network. The parameters of zone-zone trip distribution model is calibrated by using observed trip distribution between 20 Railway Bureaus of China and between 13 cities of Liaoning Province, and trip assignment model is examined through analyzing interregional trip distribueion at province level ire China and at city and county level in Liaoning Province.
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    THE FUNCTION, PATTERN AND DEVELOPMENT OF THE LOWER CHANGJIANG RIVER PORTS SYSTEM IN JIANGSU PROVINCE
    Xu Gang
    1990, 45 (3):  275-283.  doi: 10.11821/xb199003003
    Abstract ( )   PDF (617KB) ( )   Save
    The river ports system in Jiangsu Province, including six principal ports, is an important part of the ports system in the Chanbjiang River delta, and of great importance in shaping urban and regional development as well as integrated transportation network. This paper, based on a comprehensive study, lays a particular emphasis on the locational advantages and strategic positions of the lower Changjiang River ports system in regional and national transportation network, and in national economic development. A systematic analysis has been carried out on the characteristics of modern development of the lower Changjiang River ports system in Jiangsu Province. The paper holds that the following factors have profound implications, on modern development of the ports system: 1) economic location of ports, 2) industrialization (in particular the development of heavy indu-stry) and overall economic growth of hinterland 3) national policies, and 4) the spatial diffusion effects of Shanghai port. Functional study aims at improving the comprehensive efficiency of the ports system. This paper provides deep insights into the flow of freight handled at the ports system at local, regional, national and international levela. A practical formula of Location Quotient is de-signed for determining the specialized commodities of the ports system quantitatively. This paper recognizes five essential problems of the lower Changjiang River ports system in Jiangsu Province, and provides insights into the development prospects of the ports system. In addition, the roles and effects of port development in establishing urban-industrial belt along the lower Changjiang River bank have been examined.
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    A STUDY ON TOURISM DEVELOPMENT OF THE DANXIA SCENIC DISTRICT
    Chen Chuankang, Gao Yugong, Yu Kongjian, Peng Hua
    1990, 45 (3):  284-294.  doi: 10.11821/xb199003004
    Abstract ( )   PDF (1440KB) ( )   Save
    This paper has been completed on the basis of the authors' investigations and study on the landscape resources and tourism development of the Danxia basin in northern Guangdong Province from December, 1986 to July, 1988.
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    SIGNIFICANCE AND PRINCIPLES OF COMPILING THE ATLAS OF ENDEMIC DISEASES AND THEIR ENVIRONMENTS IN CHINA
    Su Yingping
    1990, 45 (3):  295-301.  doi: 10.11821/xb199003005
    Abstract ( )   PDF (767KB) ( )   Save
    Endemic disease or "Water-soil" Diseases mainly originate in regions where water is af-fected by abnormal sulpha,r content. Endemic Diseases may cause illness, disablement or even death. Endemic diseases in China are often found in mountainous areas where the inhabitants are minorities in the most part. In order to control and eliminate these disease, it is necessary to know the distribution of them, their epidemiological characteristics as well as their relationship with the environment.
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    THE MONSOON IN THE LOWER TROPOSPHERE
    Wang Anyu, You Liyu
    1990, 45 (3):  302-310.  doi: 10.11821/xb199003006
    Abstract ( )   PDF (596KB) ( )   Save
    In this paper, a new definition of the monsoon in the lower troposphere has been presented. Upon analysing the global cli-matic data of GFDL, it is found that the monthly mean horizontal wind system in the lower troposphere can be considered as the linear combination of two parts. The first part is the annual mean wind system which represents the atmospheric res-ponse to the orographically induced large scale statioary disturbances. The second part is the departure wind (monthly mean wind minus annual mean wind) which represents the atmos-pheric response to the heating contrast between oceans oceans and continents’ including large scale orography, i.e. the monsoon. Unlike classical definition, the above defined monsoon wind systems have clear physical interpretation, and have been conveniently used in the meteorological analysis.
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    THE CLIMATOLOOICAL CHARACTERISTICS OF THE BASHAN MOUNTAINS
    Li Zhaoyuan, Dong Yafei, Wu Suliang, Huang Huagui
    1990, 45 (3):  311-320.  doi: 10.11821/xb199003007
    Abstract ( )   PDF (595KB) ( )   Save
    Based on two kinds of data observed from both of 30 meteorological stations during the last 30 years and some gradient investigation points, the climatorological characteristics of the Bashan mountain have been analysed in this paper. According to the vertical variation of cli-matic factors, the reduction to the height of 50 m above sea level has been adopted and the features of the horizontal distribution of the climatic elements in this area have been discussed Compar ed with the plain area of the some latitude, the Bushan mountain seems to be another climatic barrier to the south of the Qinlin mountains.
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    THE VOLCANIC COAST IN THE AREA OF NORTHWEST HAINAN ISLAND
    Wang Ying, Zhou Lufu
    1990, 45 (3):  321-330.  doi: 10.11821/xb199003008
    Abstract ( )   PDF (649KB) ( )   Save
    There have been two periods of volcanism with 5 eruptions in the area of northwesterta Hainan Island. The first one occurred in late Pleistocene, dating back to 5.2 X 104 a B. P..It formed a lava field which covered a sandy deposit. This was later baked and altered. Ano-ther eruption took place 2.5 X 104 a B. P. The lava which emitted at that time consists of olivine basalt and tholeiite basalt; the flow ripples of elastics of them are still well-preserved. Later eruptions occurred in the Holocene, which many small breached craters appearing on the coasts and islands around and in the Beibu Bay. The last of these eruptions raised the former shingle beaches 15 m high and the former tidal flat to form terrace 20 m above sea level. This volcanic belt runs along the seashore which trends in northeast direction. It might be the result of a crustal extension in the Beibu Bay and Yingge Sea, Since the earth crust here is only 30 km thick. At present barrier coral reefs are well-developed along this volcanic coast. Most probably, they have basalt thus emitted as their basement, since the geothermal gradient here is favorable for their growth.
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    A STUDY OF LONGITUDINAL PROFILE CONCAVITY OF RIVERS IN THE NORTH CHINA PLAIN
    Xu Jiongxin
    1990, 45 (3):  331-340.  doi: 10.11821/xb199003009
    Abstract ( )   PDF (599KB) ( )   Save
    It has been suggested in this paper that the profile concavity of rivers can be expressed by the exponent in the power function describing the relation of elevation fall to river length, and by using this index the formation cause of channel profile concavity of alluvial rivers has been dealt with based on data from the rivers in the North China Plain.
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    FORMATION, DEVELOPMENT AND EVOLUTION OF JILANTAI SALT-LAKE, INNER MONGLIA
    Geng Kan, Cheng Yufeng
    1990, 45 (3):  341-349.  doi: 10.11821/xb199003010
    Abstract ( )   PDF (570KB) ( )   Save
    There are obvious stages in Jilantai Salt-lake's evolution. From the area's geomorphic structure and characteristics, the stratigraphical and sedimentary characteristics of Holocene series in the salt-lake, feature of salt chemistry and tremendous influence on the salt-lake envi- ronment by human activities, we can divide the evolution of JiLantai Salt-lake since Early Holocene epoch into five transitional phases. They are: Saline-water-lake phase of sulphates type in early interval of Middle Holocene epoch, salt-lake phase of sulphate-chloride type in later interval of Middle Holocene epoch, salt-lake phase of chloride type in Late Holocene epoch and dry salt-lake phases at present. Today, the salt-lake is being transformed from dry salt-lake bed into sand-buried lake bed beca .use of irrational human activities which have caused sands to be deflated from the ground.
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    THE SEQUENCE OF PALEOCLIMATIC VARIATION OF BALIK-UN LAKE OF XINJIANG IN THE PART 35000 YEARS
    Han Shuti, Yuan Yujiang
    1990, 45 (3):  350-362.  doi: 10.11821/xb199003011
    Abstract ( )   PDF (747KB) ( )   Save
    Through a synthetical study on the profile of core ZKOOA in Balikun Lake with many kinds of means of synchronism, in this paper, we conclude the characteristic of climatic varia-tion pattern in arid area is that the cold-wet period alternated with the warm-dry period in different time scale to some degree, that cold-wet period corresponded respectively with the glacial age and high lake sureface, that warm-dry period with interglacial are and low lake surface The foundation and main reasons of the formation of this kind of climatic pattern are the distinctive inland arid environment situated in the middle latitude westerlies and ice melting water, So, this kind of climatic pattern has some universality in Xinjiang and arid area in the westerlies.
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    DISCUSSIONS ON SOME KEY PROBLEMS IN POWER SPECTRA ANALYSIS
    Wang Qiang, Yao Zhengsheng (C. S. Yao)
    1990, 45 (3):  363-372.  doi: 10.11821/xb199003012
    Abstract ( )   PDF (534KB) ( )   Save
    The present paper include three aspects of question. (1) how to determine the value of Maximum Lab M in theory? (2) what is the re:itionship hecween the length of sample series N and the period T which is contained in this sample series? (3) how much is reliability of the period T which is disclosed by spectra analysis? The value of Maxmum Lag M is expected to be high if spectra unbiased estimation is con-sidered. At the same time, however, this value is expected limited under the consideration of re-duction variance of spectra estimation. It is advisable then that the value of Maximum Lag M be selected as 1/3 to 1/10 of the length of sample series N in both theory and practical calcula-tions.
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    ON SOME PROBLEMS OF 1HARNESSING HUANGHE RIVER
    1990, 45 (3):  373-379.  doi: 10.11821/xb199003013
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    This paper attempts to give a broad assessment of some current problems and solutions concerning how to harness the Huanghe River. The problems discussed here include: 1) depo-site of silt on lower reaches, 2) water and soil conservation on middle reaches, 3) reformation of the Sanmenxia Reservoir, and 4) astronomal and seismic influence on Huanghe's disasters.
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