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    20 July 1991, Volume 11 Issue 4 Previous Issue    Next Issue
    COMPLEXITY AND SYSTEMATICNESS OF GEO-SCIENCE
    Chen Shupeng
    1991, 11 (4):  297-305,391.  doi: 10.13249/j.cnki.sgs.1991.04.297
    Abstract ( )   PDF (693KB) ( )   Save
    In the historical process of geo-science development,we have viewed for more than one time that complexity at the lower stage has gone up to the simplicity at the higher stage,then the abnomality and complicated dilema has been confronted in the simplified laws.It appears spiral development.Some complicated scientific dilema at certain historical stage might be suddenly enlightened and resolved with the development of new ideas in science and support by the high technology. For a long time,geo-science has comparatively stressed on the observation and research of the material and energetic flow among the epigeosphere which has the most direct relationship to the mankind.Its top reaches the bottom of stratosphere and its bottom is on the top of lithosphere.The range covers 5-6kilometers depth on the land and 4 kilometers depth on the ocean.While the study on information process,especially what is the natural process of the information from the underground transmitted up to the earth surface,and absorbed by the remote sensors is inadequate.The study on geo-informatics is needed to explore so as to open the window toward the internal earth and get relatively precise information;and to master simplified laws at relatively high stage to understand complicated natural phenomina.The epigeosphere is an extremely complicated system.Because of its structure in multiple level and characteristics of open system and dynamic evolution,it needs a new integrated analysis methodology from qualitative to quantitative. The systematic dynamic model does not meet the needs of the administrations of planning,decision-making and management yet.Only to comprehensively and systematically recognize the earth on which man lives could he obtain more freedom on mastering nature.
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    PRELIMINARY RESEARCH ON LACUSTRINE DEPOSIT AND LAKE EVOLUTION ON THE SOUTH SLOPE OF THE WEST KUNLUN MOUNTAINS
    Li Shijie, Zheng Benxing, Jiao Keqin
    1991, 11 (4):  306-314,391.  doi: 10.13249/j.cnki.sgs.1991.04.306
    Abstract ( )   PDF (879KB) ( )   Save
    Based on field investigation and data obtained from more than 100 samples analyses in the laboratory,the characteristics of lacustrine deposit and the distribution,genesis and evolution of lakes on the south slope of the West Kunlun Mountains are discussed from the viewpoint of sedimentary stratigraphy and stratigraphic chronology. Lakes on the south side of the West Kunlun Mountains are distributed in depression basins along a wide east-west tectonic valley.The water source comes from melted ice and snow.The genesis of the lakes is tectonic pattern. By analyzing lacustrine sedimentary stratigraphic features,Tianshuihai paleolake might have existed since the early Quaternary.Guozha Lake,Aksayqin Lake,Tianshuihai Lake and North Tianshuihai Lake were connected together at that time.The deposit model is an upaccumlation pattern.Up to the late period of the Late Pleistocene,the unified paleolake had been separated and disappeared gradually,several lakes were formed.A period with high lake level existed about 36000yr. B.P.After 30000 yr.B.P.the lake level declined.About 21000 yr.B.P. the lake level rose again.In the western part of North Tianshuihai Lake about 4800m above sea level,there is a lake terrace about 40m higher than today’s lake level.On the southeast side of Guozha Lake about 5080m above sea level,there js also a lake terrace 3m above the existing lake level.During the Holocene,lakes shrank by stages,presented byseveral cirlular lake terraces or lakeshore traces.
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    CHANGING FEATURES AND TREND OF LIGHT INDUSTRY DISTRIBUTION IN NORTHEAST REGION
    Li Wei, Qu Lixia
    1991, 11 (4):  315-327,391.  doi: 10.13249/j.cnki.sgs.1991.04.315
    Abstract ( )   PDF (818KB) ( )   Save
    The paper discusses the evolution process and basic characteristics of light industry distribution in northeast region.Modern industry in northeast China started from light industry.However,development of heavy industry surpassed that of light industry afterwards.Since the founding of New China northeast China has become a main national heavy industry base.The development and construction of light industry has gone through tortuous changing process.It is significant for development and construction of light industry of northeast China as well as for the research on regional industrial geography to study evolving process,features and trend of light industry distribution.The present features of light industry distribution are.difference of light industry distribution,similarity of light industry structure,and imbalance of light industry development. The changing trend of light industry distribution is pointd out.
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    THE CHANGE OF VEGETATION AND CLIMATE AT DADIWAN NEOLITHIC SITE IN QINAN COUNTY,GANSU PROVINCE
    Huang Chunchang
    1991, 11 (4):  328-335,391.  doi: 10.13249/j.cnki.sgs.1991.04.328
    Abstract ( )   PDF (513KB) ( )   Save
    The stratigraphic division and sporo-pollen analysis reveal the change process of vegetation and climate at Dadiwan Neolithic site last 1000 years,show the environmental background of villages in the Neolithic age,indicating that the Dadiwan culture stage (7800-7350 years B.P.) was formed in a warm-humid deduous broadleaf forest environment,the Yangshao culture stage(6500-5000 years B.P.)formed in a relative cold-arid environment,and the Changshan culture stage (5000-4900 years B.P.) formed in a warm-humid deduous broadleaf forest environment. The Yangshan culture (6800-5000 years B.P.) along the Huanghe River drainage area was not formed in"the most suitable stage"of the Holocene,but in a semi-arid steppe and forest steppe environment with a bad climate.
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    DISTRIBUTION OF PERIGIGLACIAL GEOMORPHOLOGY AND THE RELATIONSHIP BETWEEN THE PERIGLACIAL GEOMORPHOLOGY AND THE GLACIATIONAL HISTORY ON FILDES PENINSULA,KING GEORGE ISLAND,ANTARCTICA
    Zhu Cheng, Cui Zhijiu
    1991, 11 (4):  336-342,391.  doi: 10.13249/j.cnki.sgs.1991.04.336
    Abstract ( )   PDF (628KB) ( )   Save
    Based on numerous field investigations,the authors confirmed the glaciational history of the ice stream flowing from northwest to southeast during the last glaciation.According to a large number of glacial till and erosive traces,as well as different sloping characteristics on Unnamed Island,the topography of"three high and two low",and the existence of the main ice stream in Manaotan-Yuquanhe Valley are discussed.The distribution characteristics of periglacial geomorphology which possesses the historical brand of glacial erosion are analyzed.The characteristic difference of typical combinations in different slopes indicates an inner relationship of its genesis in periglacial geomorphology,reflects an important difference between the front slope and the back slope,which was produced by glacial erosion.
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    SUNSHINE IN SHANGHAI URBAN AREA AND THE CHOICE OF HOUSE ORIENTATION
    Zhou Shuzhen, Wang Xingheng
    1991, 11 (4):  343-352,391.  doi: 10.13249/j.cnki.sgs.1991.04.343
    Abstract ( )   PDF (607KB) ( )   Save
    On the basis of data from Shanghai Central Observatory (Longhua) and its nearby rural stations for more than 20 years,we discuss the important features of sunshine in Shanghai urban area and the choice of house orientation. 1.The diurnal and seasonal variation in sunshine in Shanghai urban area is dominant.It is caused by the latitude situation,meteorological conditions and urban artificial factors. 2.By comparing the simultaneously obtained observed data from Longhua and its nearby rural stations (Baoshan,Jiading,Chuansha and Shanghai counties),it is found that in the urban area both sunshine hours and percentage of possible sunshine are less than in rural areas. This is due to much more artificial heat,pollutants and condensation nuclei to the urban atmosphere.The obvious effect on urban climate is much more low cloudiness and overcast days but less fine days and sunshine. 3.In order to obtain good sunshine (more sunshine in winter and less sunshine in summer) and good ventilation in summer,the favorable orientation of a house in Sbanghai urban district is toward SSE.This orientation can also save the building area and energy consumption.
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    LAND DESERTIFICATION AND CONTROLLING MEASURES IN SOUTHWEST SONGNEN PLAIN
    Meng Xianxi, Lu Xianguo, Wang Qicun, Huang Xichou
    1991, 11 (4):  353-360,392.  doi: 10.13249/j.cnki.sgs.1991.04.353
    Abstract ( )   PDF (571KB) ( )   Save
    The natural factors of land desertification in the Songnen Plain are: 1.The neotectonic movement and vicissitudes of riverbed from the Quaternary made a wide distribution of sand deposit in riverbed and flood land,which gives sufficient sand.2.It is windy and arid in spring and the reducing of precipitation in recent years made it much drier.The sand more easily spread. The artificial factors are over cultivation,over grazing and unreasonable firewood collection. Land desertification caused the farmland to be engulfed,ecological environment deteriorated and harmed the life of residents.ln order to control the land desertification,the authors put forward the following measures.1.Readjust the proportion of cultivated,forest and grass land,increase the proportion of forest and grass land.2.Plant trees to prevent the harm of wind and sand,including building a artificial ecological system of arbor,shrub and.grass on dunes,building a compound ecological system of forest,grass land and farm land in flat and ground, and building square forest network in lands that are easily harmed by desertification.3.Construct a model of tree-dimensional ecological system of agriculture between sand lump and pasture.4.In residential area,build a courtyard economic system with the unity of life,production and ecology.5.Make more jnvestment,pursue the policcy of contract considering production.
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    CHRONOLOGY OF QUATERNARY SEDIMENTS IN GUANGZHOU AREA
    Fang Guoxiang, Li Pingri, Zheng Jianshen
    1991, 11 (4):  361-369,392.  doi: 10.13249/j.cnki.sgs.1991.04.361
    Abstract ( )   PDF (582KB) ( )   Save
    According to 75 14C dating and 22 thermoluminescence data,in combination with the analysis of sedimentology,diatom and trace elements the authors consider that the age of Quaternary sediments in Guangzhou area can be divided into seven phases.(1) the alluvial phase in Q2(about 700-200 thousand yr.B.P.,(2) the weathering action and denudation in Q31 (about 200-50 thousand yr.B.P.,(3) the alluvial and diluvial phase in Q32-1 (about 50-30 thousand yr.B.P.,(4) the marine transgression phase in Q32-2 (about 30-18 thousand yr.B.P.,(5) the weathering action and alluvial-diluvial phase in Q33 (abaut 18-12 thousand yr.B.P.,(6) the marine transgression phase in Q41-Q42 (about 12- 2,.5 thousand yr B.P.,(7) the steady sea level on the whole and land expansion phase in Q43 (after 2500 yr.B.P.).
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    THE REVIEW AND PROSPECTS FOR THE INTEGRATIVE EVALUATION WORK OF AGRICULTURAL NATURAL RESOURCES
    Wu Dengru
    1991, 11 (4):  370-379,392.  doi: 10.13249/j.cnki.sgs.1991.04.370
    Abstract ( )   PDF (764KB) ( )   Save
    The approach to integrative evaluation and reasonable utilization of agricultural natural resources (ANR) is the main content of agricultural geography.It is Very important to review and appraise this work for deepening its theory,perfecting its methodology,improving its application value.In this paper,the history of ANR integrative evaluation is reviewed,on the basis of this review,the main theory and methodology is evaluated.There are three approaches to studying integrative evaluation of ANR.The first is natural-ecological direction.Its focus is on evaluation of natural productive ability,its advantage is simple,meeting general application needs;its disadvantage is short of economic factor,the application is indirect and limited.The second is productive-technique direction,its advantage is direct and easy application,its disadvantage is short of evaluation of whole regional resource system.The third is economic evaluation direction.There are different concepts and methods in this field in each country.The focus of Cbina is on the integrative evaluation of nature,economy and technology,its advantage is reasonable and applied,its disadvantage is short of systematic theory and me thodology.Finally the approach to future trends of this work is shown in this paper.
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    DEVELOPMENT OF SCOURING AND SILTATION OF COAST IN YANCHENG AREA,JIANGSU PROVINCE
    Jiang Bingxing
    1991, 11 (4):  380-388,392.  doi: 10.13249/j.cnki.sgs.1991.04.380
    Abstract ( )   PDF (519KB) ( )   Save
    On the basis of on-the-spot survey,in reference to historical literatures,contrasting topographic maps,and with the help of the materials obtained from observation and surveying,the article makes a special effort to elaborate the development of the coast in Yaneheng area after the Huangbe River shifted northward,reveals the difference of the development between northern and southern coasts in the area, and analyzes its cause and predicts the tendency of the develoment of the coasts.The origin of the artiele is to present some information for exploitation of the coast zone.
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