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Table of Content

    15 April 1987, Volume 42 Issue 2 Previous Issue    Next Issue
    THE MACROSTRATEGY OF REGIONAL DEVELOPMENT IN CHINA
    Lu Dadao
    1987, 42 (2):  97-105.  doi: 10.11821/xb198702001
    Abstract ( )   PDF (458KB) ( )   Save
    In China there exists enormous regional differences in territorial exploitation and economic development. We have two regional developing macrostratogies to chose from: stressed (focal point) exploitation and balanced development. On the basis of Chinese and foriegn practices and theories of regional development, the author points out, China should adopt the strategy of stressed exploitation. That is, Chinese regional economic development ought to follow the model of sequenced diffusion in the way of point-axis to realize relative balance. In order to strengthen the ties between the Eastern and Western China and put the strategy into practice. We must set up prior industrial zones throughout the country. This is possible especiully along the coast and the Chang Jiang (yangtze) River, both of which are first class axises and there by can form an economic macro-pattern in the shape of a "T". Besides, the economic zones should widely establish their horitontal relations among themselves as well.
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    APPLICATION OF INTEGRATED PHYSICAL GEOGRAPHY TO MONTANE TERRAIN MANAGEMENT
    Xu Qiaoli
    1987, 42 (2):  106-115.  doi: 10.11821/xb198702002
    Abstract ( )   PDF (649KB) ( )   Save
    This pape- discusses the application of integrated physical geography to montane terrain management.Based upon the author’s experience, the paper takes the montane areas of western Hubei Province as examples. It shows the application of integrated physical geography to the design of agriculture, industry, ecosystems and tourist sites in montane areas:1. It lays a scientific foundation for the design of commercial montane agricultural bases by exposing the structure of agricultural lands for a special purpose.2. It provides a scientific base for the design of montane industrial structures and layouts as well as the appraisal of the location of industrial bases by dividing the regions of industrial resources and evaluating the engineering quality of industrial lands.3. It lays a necessary bases for the ecological design of montane catchment areas by land differentiation and ecologic-economic value.4. It may help the design of tourist sites by the classification of tourist lands and the functional division of tourist areas.
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    THE CLIMATIC ESTIMATION OF PHOTON FLUX DENSITY OF DIRECT SOLAR RADIATION
    Zhou Yunhua, Xiang Yueqin
    1987, 42 (2):  116-128.  doi: 10.11821/xb198702003
    Abstract ( )   PDF (726KB) ( )   Save
    (1) Based on the transfer equation of direct solar radiation in the atmosphere a formula of estimating the amount of photons, n, corresponding to one unit of PAR (0.4-0.7u,) of the direct solar radiation at sea level has been developed.
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    SEDIMENTARY STRUCTURE AND DEVELOPING MODEL OF COASTAL DUNES ALONG THE NORTHEASTERN COAST OF HAINAN ISLAND, CHINA
    Wu Zheng, Wu Kegang
    1987, 42 (2):  129-141.  doi: 10.11821/xb198702004
    Abstract ( )   PDF (3207KB) ( )   Save
    Along the northestern coast of Hainan Island, Holocene coastal dunes and dune rock make a wide tropical coastal dune belt.
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    THE DISTRIBUTION AND STATUS OF HEAVY METALS IN SOIL OF THE GEOCHEMICAL LANDSCAPE IN A SUB-TROPICAL ZONE, WESTERN HUNAN
    Ying Weiming, Zhang Shen
    1987, 42 (2):  142-150.  doi: 10.11821/xb198702005
    Abstract ( )   PDF (555KB) ( )   Save
    In this paper, an attempt has been made to study the relationship between some heavy metals and soil separates as well as the composition of minerals in the soils of the Zhang Jia Jie-Suo Xi Yu protected area, Western Hunan Province.The total content of heavy metals in the soils of geochemical landscapes is influenced by the parent rock and the biocycle as well as the geocycle in the soil-forming processes. The studies show that the contents of heavy metals for various particle-size groups increase from the largest particle sizes downward and the heavy metals have a tendency to concentrate in clay (< 0.001 mm). From the data obtained in this study, the total content of heavy metals in soil is atributed to the integrated influences of heavy metal enrichment in clay and the content of clay itself in soil.The various particle-size groups have been made by X-ray diffration, Mineralogical analysis indicates that there is a gradual transition from the soil minerals that mainly consist of Chlorite, Kalinite and Illite to those that mainly consist of Quartz with increasing particle size. This kind of transition could result in the distribution of heavy metal in different particle-size groups, which conforms to the principle of chemical crystallography and the characteristic of colloids. The higher heavy metal concentrations at smaller particle sizes in soil has been suggested.
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    A PRELIMINARY STUDY ON THE DEMARCATION OF RAIN STORMS IN CHINA
    Zou Jinshang, Wang Meihua, Zhang Wei
    1987, 42 (2):  151-164.  doi: 10.11821/xb198702006
    Abstract ( )   PDF (823KB) ( )   Save
    Based on the average and extreme values of maximum 24-hr rainfall for the last 30 years at hydrological and meteorological stations in China, the demarcation of severe rainstorms in China is investigated. The intensities and seasonal distribution features of severe rainstorms, weather systems and the direction of water vapour transfer and some geographical factors, including topography, elevation and the contrast nature of sea and continent, are comprehensively considered for demarcation.First of all, based on synoptic climatology, ten regions, where rainstorms occur, may be preliminarily delimitated.Secondly, by calculating the areal rainfall index of each region, the correlation coefficient of the areal rainfall index with annual rainfall (or precipitation in May-Aug.) at every station in a given region can be computed. If the correlation coefficient reaches the level of significance (a = 0.05) it means that the station belongs in the same climate region.Finally, ten homogeneous climate regions of severe rain storms and four subregions are delimitated. The genesis of rainstorms and its characteristics in each of the regions are briefly dis-cribed.
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    THE PALEOBOTANY AND PALEOOLIMATE IN THE SONGNEN PLAIN: A STUDY ON THE LATE TERTIARY-PLEISTOCENE SPORE POLLEN ASSEMBLAGES
    Xia Yumei, Wang Peifang
    1987, 42 (2):  165-178.  doi: 10.11821/xb198702007
    Abstract ( )   PDF (830KB) ( )   Save
    On the basis of the dating of the spore-pollen analysis from drilling cores and outcrop sections of Qianan, Daging, Fuyu, Harbin, Changchun, Longjiang in the Songnen Plain, the period of the late Tertiary-Pleistocene was divided into 13 spore-pollen assemblages. During the late Tertiary tree pollen dominated and during the Pleistocene herb pollen dominated.According to the charesteristics of spore pollen assemblages and paleomagnetics and 14C dating, the succession of the paleibotany and paleoclimate in the region is as follows:(1) In the early epoch of the late Tertiary, the Pinus, Tsuga, Ulmus, Carya represented a mixed evergreen conifer-broad leaf deciduous forest, which belong to warm and humid climate. At the end of the late Tertiary, Pinus and Picea with a number of broad-leaf species formed a mixed temperate conifer-broad leaf forest with steppe type vegetation occurring in part; the climate had changed from warm and wet to mild and dry.(2) In the Pleistocene period, the vegetation in the region was dominated by temperate park steppe, meadow-steppe and steppe. In addition, the dark coniferous forest was distributed in isolated islands. During late Pleistocene epoch, the periglacial vegetation was distributed extensively, as the Climate of this period got drier and cooler.
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    ON RESEARCH OF COMPARATIVE HYDROLOGY
    Liu Changming
    1987, 42 (2):  182-188.  doi: 10.11821/xb198702009
    Abstract ( )   PDF (453KB) ( )   Save
    Comparative hydrology is a new concept in hydrological study. The author indroduces contemporary international development of the study. On the basis of a review of the problems in caparative hydrology, the present paper deals with the scope of research work, including principles, objectives and analytical approaches. The author states that China is one of largest counties in the World with a considerable variety of hydrological types which are favourable to research on comparative hydrology. Finally, a research proposel is presented for Chinese geographical/engineering hydrologists: 1. Establishment of an entire system for various hydrological types; 2. Enhancement of the study of hydrological processes for all hydrological types; 3. Development of a data bank and information system for comparative hydrology; 4. Development of comparative hydrology models for transferring hydrological predications from one area to another.
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