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  • 1988 Volume 8 Issue 3
    Published: 20 May 1988
      
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  • STUDY ON NATURAL CONDITIONS AND AGRICULTURAL COMPREHENSIVE DEVELOPMENT OF THE SANJIANG PLAIN for the 30th Anniversary of the Establishment of Changehun Institute of Geography,Academia Siniea
    Liu Xingtu
    1988, 8(3): 201-207,295. https://doi.org/10.13249/j.cnki.sgs.1988.03.201
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    The Sanjiang Plain is a region developing later and not fully,and also an important commodity grain base of China. Since Changchun Institute of Geography was established in 1958 the Sanjiang Plain has been taken as its main study area,there have been about one hundred research workers engaged in the study works there;and more than 40 papers have been published in magazines at home and abroad, and 2 monographs have been published.The study contents include:the formation and evolution of the plain and its natural geographical conditions; the types,genesis,characteristics,utilization and conservation of marshes; the compilation of resource maps and the analysis of the amount,type,distribution,quality,development and utilization of all kinds of agricultural resources,by using remote sensing technology and in combination with fieldsurvey;and the suggesiton about regional agriculturol comprehensive development.Research achievements obtained not only enrich and develop the theory of branch disciplines related to geography,but also provide the scientific basis for the strategic decision of national economic development and the overall developing program of the localities.
  • AN APPROACH TO RETAIL COMMERCE LOCATION OF GUANGZHUU URBAN AREA
    Wu Yuwen, Xie Bin, Luo Ciguang, Zhang Yunjian
    1988, 8(3): 208-217,295. https://doi.org/10.13249/j.cnki.sgs.1988.03.208
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    Proceeding from the commercial function of Guangzhou urban area,this paper expounds the principles and requirements choosing commercial location, put forward the bases to deternine the limits of commercial centers.Thirty major commercial centers in Guangzhou urban area are classified by means of cluster analysis.The function,size,hierarchy and interconnection of commercial centers of different groups are studied.The paper emphatically analyzes the major characteristics and formation factors of the commercial location of Guangzhou urban area.Finally,to counter the problems in existence, some suggestions,are put forward in order toimprove the commercialloeation of Guangzhou urban area.
  • SOME CLIMATIC CHARACTERISTICS OF URBAN BOUNDARY LAYER IN SHENYANG
    Han Xishan
    1988, 8(3): 218-225,295. https://doi.org/10.13249/j.cnki.sgs.1988.03.218
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    This paper Piscusses some climatic characteristics of the vertical,structure of temperature field,heat island circulation and heat island mixture layer in the urban boundary layer in Shenyang. The bubble structure of SO2,the penetrating inversion layer of SO2, and spiral smoke mass are analyzed.The model of an urban boundary layer is plotted based on a large amount of observed data in Shenyang and analytical results.Finally,five conclusions are given.
  • THE ORGANIC MATTER IN LOESS
    Diao Guiyi, Wen Qizhong
    1988, 8(3): 226-231,295. https://doi.org/10.13249/j.cnki.sgs.1988.03.226
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    The analysis results of 110 loess samples from the middle reaches of the Huanghe River show that the contents of Organic matter range from 0.179 to 0.883%,with an average value of 0.390%,most in extent of 0.2000.600%.The contents increase from northwest to southeast.The contents of the organic matter in loess profile decrease with depth increasing.The phenomenon known as"been lost"of organic matter are observed in both loess and paleosol,This process might be accomplished 800,000 years ago,
  • SOME FUNDAMENTAL PRINCIPLES ON AGRICULTURAL TERRITORIAL DEVELOPMENT IN XINJIANG
    Li Jiucheng
    1988, 8(3): 232-239,295. https://doi.org/10.13249/j.cnki.sgs.1988.03.232
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    The Xinjiang Uygur Autonomous Region is a special geographicai unit. Only recognizing and following its specific natural law and making special artilicial activities,can we obtain the relatively harmonious development between man and environment. Xinjiang is a particular arid region.Through the study of the agricultural production environment(including agriculture,forestry and animal husbandry,etc.)in Xinjiang,the concept of approaching"desert",and differentiation law in time and space,four fundamental principles which are general significance in the work of agricultural territorial development in arid regions are put forward:(1)the "opening" principle of departmental production environment,which is the foundation that every production department gets common"evolution";(2)the principle of construction first and then destruction(or called prevention first,control second);(3)the principle of abandoning weakness and making full use of strong point;and(4)the principle of environmental benefit.In addition,in a certain region,the greatest cnvironmental benefit can be obtained through connecting each little piece to form large area gradually.Finally,three vital laws,namely,natural,economic,human laws must be followed.
  • PRELIMINARY STUDY ON VEGETAIONAL DEVE-LOPMENT AND CLIMATIC CHANGES IN THE SANJIANG PLAIN IN THE LAST 12000 YEARS
    Xia Yumei
    1988, 8(3): 240-249,295. https://doi.org/10.13249/j.cnki.sgs.1988.03.240
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    Based on the spore-pollen analysis and the 14C dating from 6 peat profiles,the features og plart communities and climatic changes in the last 12000 years are discussed. 12000-9500 B.P.was the period of thin leaf and bush forest,the temperature was 2-3℃ lower than today.,called cool period. 9500-5000 B.P.was the period of temperate broadleaf forest.Meanwhile, during 9500-8000 B.P.Ulmus grew luxuriantly,climate was warm and dry, called the period of increasing temperature.From 8000 to 5000 B.P.Quercus mongolica was much more luxuriantly,temperature was 3-4℃ higher than today. 5000-2500 B.P.was the period of coniferous and broadleaf torest of frigid-temperature zones.About 5000 to 3000 B.P.Abies,Picea and Pinus started to increase suddenly,cold and wet climate commenced.2500 B.P.to present was called the Pinus koraiensis stage,temperature was 1-2℃ lower than today.
  • TEXTUAL RESEARCH ON THE MAIN SOURCE OF THE CHANGJIANG RIVER
    Sun Guangyou, Deng Wei, Shao Qingchun, Hua Runkui
    1988, 8(3): 250-258,296. https://doi.org/10.13249/j.cnki.sgs.1988.03.250
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    Chinese people began to research the main source of the Changjiang River 2400 years ago.Limited by the scientific level,they did not find out it. The Tuotuo River was determined as the main source of the Changjiang River in the 1970s.However,it was not correct,because when comparing the length of the Tuotuo River with the Dam River,the glacier length at headwater was added to the Tuotuo River,resulting in that the Tuotuo River is 1km longer than the Dam River.But glacier can not be regarded as river. In summer of 1986,we made a scientific investigation on the source of the Changjiang River and accurately measured the length of both the Tuotuo and Dam rivers on the maps.We discovered that the Dam River was 6.8km longer than the Tuotuo River,the Dam River 353.1km long and the Tuotuc River 346.3km.The discharge of the Dam River is 2.6 times as large as the Tuotuo River,The discharge of the Dam River is 196.18m3/sec,and the Tuotuo River 75.10m3/sec.The drainage area of the Dam River is 1.8 times as large as the Tuotuo River.The drainage area of the Dam River is 30715.7km2,the Tuotuo River 16691.0 km2. Through the synthetic analysis of the factors mentioned above,we come to the conclusion that the main source of the Changjiang River is the Dam River instead of the Tuotuo River. We have corrected the position of the Tuotuo River head which Was not correct because of adding glacier to the length of the river,and also corrected the position of the Dam River head according to Landsat images.
  • A CLOBAL AND ECONOMIC PERSPECTIVE ON INDUSTRIAL GEOGRAPHY
    Wang Jici
    1988, 8(3): 259-263,296. https://doi.org/10.13249/j.cnki.sgs.1988.03.259
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    This paper discusses a new trend of development in industrial geography in China. As a brand-new pattern of economic development has emerged in China since the economic reform began in the end of the 1970s,China’s geographers have been facing with a series of new problems never met before.A new concept of "the strategy of large international curculation" as a signal from a global and economic perspective is chellanging the dominating frameworks of study and education in China’s industrial geography.It is augued by the author that China’s industrial geographers should shift their emphasis of study from the distribution of mineral resources to the erational mechanism of the economy,although the study on the former is still basic and necessary.The similar change in the education of industrial geography in China should be made in the same direction. It is believed that such changes both in research and eduction will no only diversify the sudy of industrial geography and relate more tightly to the country’s development but also,in generatl,promote the internationalization of education and research,which has been seen as an important part of China’s modernization.
  • CLAY MINERAL COMPOSITION OF MOMOGE DRILL HOLE IN THE-SONGNEN PLAIN AND PALEOGEOGRAPHICAL SIGNIFICANCE
    Yan Qiulan
    1988, 8(3): 264-271,296. https://doi.org/10.13249/j.cnki.sgs.1988.03.264
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    This paper emphatically studies the.formation,composition and evolution regularity of clay minerals in strata of Momoge drill hole.According to the data of paleobiology and strata lithology,paleosedimentary environment and paleoclimate are restored,paleogeography is reconstructed in the Songnen Plain from the late Cretuceous,the Neogene,to the Pleistocene of the Quaternary. In the strata of the late Cretaceous,montmorillonite,as enclosed waterbody mineral,is dominant with good crystallinoty,reflecting the lakeshore sedimentary feature and hot and slightly wet paleoclimate at that time. In the Neogene,influenced by global warm and humid climate,the basin was in the.period when lakes and rivers alternately developed,corresponding forming 5 clay mineral association zones in which kaolinite or montmorillonite was alternately as main mineral.The climate underwent such change process from,hot and dry,hot and humid,warm and relatively dray warm and relatively 1 umid,to warm and slightly dry. In the Pleistocene of the Quaternary,iniluenced by global glacial climate, lakes,swamps and basnis in linland gradually shrank,at last became dry and cold steppes.In clay mineral association zones,illite was main minearal,adding into chlorite,Palecclimate underwent the provcss from cold and dry, warm and humid,warm and dry,to cold and dry.
  • RESEARCH ON COMPUTER IMITATION OF THE CONCENTRATION OF AIR POLLUTANTS IN SIPING CITY
    Guo Zhenhua, Liu Gui, Bao Chunbin, Shi Yuhua, Cao Shanjie, Zhang Shui
    1988, 8(3): 272-282,296. https://doi.org/10.13249/j.cnki.sgs.1988.03.272
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    Based on the intensities of the point sources and area sources of air pollutant SO2,average annual concentration of SO2 in per square kilometre air in Siping City is calculated with the method of computer imitation.For choosing diffusion model,the application of the Hanna model is improved,and the affection of area sources and horizontal diffusion are calculated in 16 directions.
  • REGIONAL DIFFERENTIATION OF CHINESE STATURE
    Sun Guanlong
    1988, 8(3): 283-289,296. https://doi.org/10.13249/j.cnki.sgs.1988.03.283
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    Stature is an outstanding mark of different regional people.The differentiation of stature between southerner and northerner in China is nctable,showing an increasing tendency from south to north.The differentiation of stature of people between inland and coast is obvious,generally,on same latitude,people of coast are taller than people of inland.The differentiation of stature of people between cities and countryside is evident,generally,in same area people of cities are taller than people of countryside.However,in recent ten years,with the rise of people’s living standard of countryside,this differentiation is lessening in some areas.The differentiation of stature between Chinese nationalities is distinct,for example,people of the Tibetan,Korean, Mongolian and Uygur nationalities are comparatively tail,who are living in higher latitude areas or higher altitude areas.