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Table of Content

    15 October 1980, Volume 35 Issue 35 Previous Issue    Next Issue
    RESEARCH METHOD ON REGIONAL ECONOMIC-GEOGRAPHIC FOUNDATION OF CITY DEVELOPMENT
    Soong Chiatai
    1980, 35 (35):  277-287.  doi: 10.11821/xb198004001
    Abstract ( )   PDF (845KB) ( )   Save
    From actual planning work on a number of small and medium eities of China.research methods on regional economico-geographie foundation of city development maybe summarized as follows:1. The economie development of the region is the basis of city development. Themost important factors influencing city development are: (a) The political situationand need for national economic developments; (b) Geographical location, historical de-velopment and natural resources of the city and regional economic conditions. Cities,in their economic function are economic centers for areas of various extent. Therefore,the idea of city-region is, in fact, the conception of economic center-economic region. InChina, city-region implies the following two cases:(1) Administrative centers of various administrative units generally posses certainregional economic foundation and consequently serve as economic centers for certainregions.(2) The economic hinterland of certain cities may exceed their respectiveadministrative units.2. The main content of the studying regional economic development of a city is:(1) Foundamental characteristics of regional physico-guographical conditions andtheir areal differentiations.(2) Land, mineral and labour resources of the region.(3) Localization and development of agriculture of the region and its demand onthe eity.(4) Localization and development of industry of the region and its relation withthe city.(5) Transportation of the region, especially quantity and transport direction ofmain commodities which may be used to demarcate the extent of hinterland of the cityfrom the neighbouring economic centers.(6) The distribution of other small cities and towns in the region.(7) The economic position of the eity-region in a given province and the economicrelation with neighbouring regions.
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    THEORETICAL ANALYSIS OF PHYSICO-GEOGRAPHICAL ZONATION
    Niu Wenyuan
    1980, 35 (35):  288-298.  doi: 10.11821/xb198004002
    Abstract ( )   PDF (663KB) ( )   Save
    The essential reason why there is physico-geographical zonation is the regular dis-tribution of solar radiant energy on the surface of the earth as a sphere. With varioushumidity conditions and different altitude above the sea level, realistic situation of theearth’s surface ean change the theoretical distribution pattern of physico-geographicalzonation.
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    RELATIONSHIP BETWEEN SEA-LEVEL CHANGES AND CLIMATIC FLUCTUATIONS IN EAST CHINASINCE LATE PLEISTOCENE
    Wang Jingtai, Wang Pinhsien
    1980, 35 (35):  299-312.  doi: 10.11821/xb198004003
    Abstract ( )   PDF (950KB) ( )   Save
    This paper deals with the relationship between sea-level changes and climatic fluc-tuations based on the analysis of stratigraphy, fauna and flora, archeology and radio-metric dating of the East China coastal plains and the continental shelves of Dong Hai(East China Sea) and Huang Hai (Yellow Sea) since Late Pleistocene. It concludedthat there are three major cycles of climatic changes since the last 110,000 years B.P.in East China, namely:11O,000 B.P. - 70,000 B.P., a warm stage, corresponding to the Lushan-Dali In-terglaciation;70,000 B.P. - 10,000 B.P., a cool stage, corresponding to the Dali Glaciation;10,000 B.P. to the present, the Post-Glacial stage, a stage of rewarming.Within three major stages, some climatic oscillations are recorded, i.e., cool sub-stages in warm stages or warming substages in cold stages. The general trends of clima-tic changes in East China conform to those of the European and American continents,as well as to the climatic changes in the oceans indicated by oxygen isotope and othertechniques.During the past 110,000 years regression occurred twice over the continental shel-ves of the Dong Hai and the Huang Hai. On the coastal plains of East China traced outthree transgressions. They are the Asterorotalia Sea transgression of 110,000-70,000years B. P., the Pseudorotalia Sea transgression of 44,000-25,000 years B.P., and theAmmonia Sea transgression which started at about 14,000 years B.P. and re-ached its maximum at 6,000 years B.P. The rate of Late Quaternary tec-tonic subsidence in East China is estimated at 0.6-1 mm/year, it is very slow in respectto the sea-level fluctuation rate of 6-9 mm/year. Consequently, the sea-level changesobserved here were controlled by sea-level change of the world and were only slightlyinfluenced by tectonics.The similarity of the sea-level change curve to the paleoclimatic curve points to aclose correlation of sea-level rising with climatic warming, and sealevel dropping withcooling. Therefore, the essence of the sea-level changes in East China is the climatic-sea-level changes of the world.
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    CLIMATOLOGICAL ANALYSIS OF THE MOISTURF CONDITION ON THE SLOPE LAND AND LEVEL TERRACES
    Chen Mingrong
    1980, 35 (35):  313-324.  doi: 10.11821/xb198004004
    Abstract ( )   PDF (664KB) ( )   Save
    In this paper, by applying the theory of radiation balance, a methord of estimatingthe moisture condition on the slope land and level terrares is obtained.
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    THE LAW OF DRAINAGE BASIN COMPOSITION FOR DAHINGGAN LING MOUNTAIN
    Chen Yongzong
    1980, 35 (35):  325-337.  doi: 10.11821/xb198004005
    Abstract ( )   PDF (672KB) ( )   Save
    After analysing the data of 10 small drainage basin composition of periglacialregion of Dahinggan Ling Mountain, it showed that the R. E. Horton’s law of waterdrainage composition is accurate.The retationship between the mean stream length accumulation value and streamorder is better than the relationship between the mean stream length and stream order.The number of interbasin equals to the total number of streams in the basin,minus one. The relationship of the magnitude of interbasin area and streams orderform a positive geometric series.The drainage density, constant of channal maintenance area and the frequency-distribution of first order stream area on the eastcrn slopes of Dahinggan Ling moun-tain differ signifiantly from the western slopes, which is caused by climatic difference.Morphological features of dramage basins may be described by the mean basin area,relief ratio and stream length, they have a multiple corrclation with the streamgradient.
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    THE DISCUSSION OF THE EVOLUTION HISTORY FOR GUILIN BASIN
    Chen Zhiping, Liu Jinrong
    1980, 35 (35):  338-347.  doi: 10.11821/xb198004006
    Abstract ( )   PDF (666KB) ( )   Save
    This paper depicts the characteristics of structural guomorphology for Guilin Basin,and suggests that this basin was down faulted in Cainozoic time from a peneplain form-ed during Late Cretaceous and Early Tertiary.The Early and Middle Pleistocene tectonic movement exerted remarkable influenceon landforms, causing the river to cut down 150 m. Since late Pleistocene, however, thetectonic movement has been insignificant, so that the local base level has not fluctuat-ed far from 142-148 m, which is the height of a denudation surface formed duringMiddle Pleistocene. That’s why the Guillin Basin still keeps the major feature of theMiddle Pleistocene.The evolution of morphology of the Guillin Basin is also influenced by climaticchanges. The alternation of glacial and interglacial periods caused the uplift and sub-sidence of sea level of the world, thus producing great impact on morphologic evolutionboth in the vicinity of the coast and on middle and lower reaches of big rivers. Afterstudying the characteristics of river terrace sediments of Lijiang, we think that thisriver was aggraded during interglacial period. while eroded during glacial period.
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    SIMPLIFICATION OF M.I. BUDYKO'S METHOD ON CALCULA-TION OF POTENTIAL EVAPORATION AND COMPARE IT WITH H.L. PENMAN'S METHOD
    Wang Benshan
    1980, 35 (35):  348-355.  doi: 10.11821/xb198004007
    Abstract ( )   PDF (430KB) ( )   Save
    In this paper, M.I. Budyko's (М·И·Будыко's) method on calculation of poten-tial evaporation (E0) is simplified, and obtained a formula which is similar to H. L.
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