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  • 1993 Volume 13 Issue 1
    Published: 20 January 1993
      
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  • ANALYSIS OF LOCATION CONDITION OF FINANCIAL CENTRES IN CHINA
    Ye Limei
    1993, 13(1): 1-8,95. https://doi.org/10.13249/j.cnki.sgs.1993.01.1
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    First of all,the necessity of establishing the financial centre is expounded.It is pointed out that establishing financial centre has a lot of benefits to the world economic development,China’s economy and the occupied cities.The location conditions of the financial centre may be summarized as follows.the locaton of trade centre,the geographic position factor,the circumstances of finance,etc.The author considers that the financial centre of first batch in China should be established in the cities of the eastern China.So 9 cities in the eastern China are chosen as financial centres.According to the location conditions of the financial centre,12 indices are chosen,the method of synthetic weighted average is used to find the best locations of the financial centres.The conclusions are that the financial centre in the first grade should be in Shanghai and the second grade should be in Tianjin and Guangzhou.
  • THE EFFECT OF WATER RESOURCES SHORTAGE ON REGIONAL ECONOMIC DEVELOPMENT
    Liu Weidong, Lu Dadao
    1993, 13(1): 9-16,95. https://doi.org/10.13249/j.cnki.sgs.1993.01.9
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    Water resources shortage has become an important object of regional research because it shows serious consequence,e,g.it restricts the economic development in many countries and regions in the world.The shortage of water resources,in the light of supply,is classified into supplying shortage,economic shortage and absolute shortage,and in the light of demand,into baseline shortage,productive shortage and environmental shortage.The effects of the productive shortage of water resources on the regional economic development include the following three aspcts: 1)the effect on the total output target of regional economic growth; 2)the effect on the regional economic structure; 3)the effect on the location and spatial structure of regional economy. At a given target of economic growth,the effect of water resources shortage on economic growth is the functions of economic structure,technological progress,the extent of water saving and the extent of water resources shortage.
  • THE CHARACTERISTICS AND CAUSE OF THE SEAWATER INTRUSION AND POLLUTION IN SOUTH LIAODONG PENINSULA
    Liu Qingshu, Xu Jinsong
    1993, 13(1): 17-25,95. https://doi.org/10.13249/j.cnki.sgs.1993.01.17
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    Based on various patterns of groundwater and their abundance characters in south Liaodong Peninsula,the distribution,intrusion stage,intrusion pattern and intrusion characters of seawater intrusion in the serious seawater intrusion areas are analysed.The reasons to cause seawater intrusion are precipitation,recharge of surface water,artificial overpumping,lithology and geological structure.It can provide scientific basis for reasonable utilization of limited water resource in line with the local conditions.
  • A STUDY ON REGIONAL STRUCTURE OF LANDFORMS IN SHANDONG PROVINCE
    Mao Minkang
    1993, 13(1): 26-33,95. https://doi.org/10.13249/j.cnki.sgs.1993.01.26
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    1.This article puts forward an ordering frame of the geomorphological units in Shandong Province and discusses the hierarchical interrelation of the frames. 2.A concept of transitional geomorphological unit has been suggested.Recognition of this type of unit in geomorphological regionalization has important theoretical and practical significance. 3.Based on the structtural analysis of geomorphological regions in Shandong,the author stated his views about problems of rational application of the regional structure of landforms in Shandong. This paper is a preliminary study which introduces the systematic view and the idea of synthetic physical geography into the geomorphological regionalization.This approach can be taken as a transitional way through which definite explanation for geomorphological regionalization can be made.This approach is also useful for the rational exploitation of natural resources and for management and harnessing of the national territory.
  • CHARACTERISTICS OF KARST DEVELOPMENT AND DYNAMICS OF GROUNDWATER IN WIDE VALLEY
    Song Hanzhou, Peng Hanxing, Wang Jianping
    1993, 13(1): 34-40,95. https://doi.org/10.13249/j.cnki.sgs.1993.01.34
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    Some characteristics of kast development amd the corresponding dynamic properties of groundwater in a wide valley are studied.It is pointed out that the karst on the surface was quite developed and the relative unobstruted depth of karst developing was small because of the special topographic condition.It is also pointed oot that the karstic piping systems which usually contain the unconfined flow exist in the area close to the river,and along the system have big transmission capacity,small gradient,etc.Therefore,they would be the important domains in which the anti-leakage steps need to be taken.Finally,the formation of the double or more than double goundwater levels,which may occur in the process of drilling,is analyzed and its significance is discussed briefly.
  • STUDY ON ECOLOGICAL BENEFITS OF COMPLEX ECOSYSTEM OF RICE-REED-FISH IN THE MIRE REGION OF THE SANJIANG PLAIN
    Yang Yongxing, Liu Xingtu, Han Shunzheng, Yang Fuyi, Li Xiujun
    1993, 13(1): 41-48,95. https://doi.org/10.13249/j.cnki.sgs.1993.01.41
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    In this paper the ecological benefits of complex ecosystem of rice-reed-fish in the mire region of the Sanjiang Plain are presented according to firsthand observations in the field in four years and chemical analysis data of soil,water and product of the system. This system utilizes water resource comprehensively and cyclically and raises its utilization rate.It is able to regulate the runoff of river and maintain the regional water balance,so,it has become an ecological defence for farmland around the complex ecosystem.It makes the air relative humidity rise,similar to mire function so that it prevents regional environment from drying.Some field management measures,ploughing amd irrigatiom in spring,improve thermal regime of soil and appear a positive effect for soil temperature in the reedland.This system also owns ecological function in conserving regional ecological environment and raising its quality.It has ability to clear up many kinds of organic and inorganic pollutant from water and soil.The soil fertility of this system has been increased in comparison with original mire.This system provides a ideal habitat of propagation,foraging,nidation and fattening for wild precious mire animals,both the quantity and composition of mire animal have increased obviously after exploiting mire in this way.The system plays an important role in conserving rare mire animals and maintaining ecological balance of mire region.This exploitative model improves the productive force as compared with mire and raises the land-control rate in this area.We believe that exploiting mire in the way of growing rice and reed and fishing is one of the ideal models for wide distributional region of mire.It creates a new path for our country to develop mire.
  • APPLICATION OF LANDSAT IMAGE TO MARSH SURVEY IN THE SANJIANG PLAIN
    Zhang Yangzhen, Hua Renkui, Li Yuqin
    1993, 13(1): 49-56,96. https://doi.org/10.13249/j.cnki.sgs.1993.01.49
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    The Sanjjiang Plain is one of the biggest marsh areas and the most concentric distribution area of marsh in our country.The area of marsh makes up 10.3% of the total region.Based on the principle that marsh types can be distinguished on the Landsat image we make marsh plant community as a basis dividing marsh types.There are 6 marsh types:Carex lasiocarpa marsh,Carex pseudoca raica marsh,Phragmites communis Deyeuxia angustifolia marsh,and Glyceria sp-Carex sp marsh,Carex sp marsh and Carex marsh with taro in the whole region. After analysing spectral curve characteristics of marsh waterbody,marsh soil, marsh plant and difference among them and non-marsh waterbody,soil,plant we think that spectral curves of marsh plant represent spectral curve characteristics of marsh to a great extent.The marsh plant grows on water and soil of marsh.Various types of marsh plant reflect different environmental conditions,different soil and water sources and marsh waterbody existence form.The extractive experiments of Carex lasiocarpa marsh, Carex pseudocuraica,peat and its quality were done with the method of optical image processing.Applying Landsat information of multitemporal images,through optical enhancement,enhancement of digital images based on band,image classification processing and false colour composite technology image of various marsh types have been extracted satisfactorily.The marsh types,the range of distribution and the area of various marsh types were determined by field investigation and verification.Thereby,it is obvious that remote sensing is an effective method in marsh survey of vast extent into which human being go difficultly.
  • EFFECTS OF RECENT VOLCANIC ERUPTIONS ON ALPINE AND SUBALPINE VEGETATION IN THE CHANGBAI MOUNTAIN
    Liu Qijing, Wang Zhan, Wang Shaoxian
    1993, 13(1): 57-61,96. https://doi.org/10.13249/j.cnki.sgs.1993.01.57
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    A lot of tree residues(wood fossil)were found under the pumice layer in alpine and subalpine vegetation in the Changbai Mountain.The residues of Betula ermanii and Pinus pumila distributed from 2050 m to 2160 m in the south slope.Based on 14C dating, the residues were covered by a volcanic eruption happened 1580?70 years(408?70 AD)ago.Pinus Pumila communities disappeared after volcanic eruptions.From 1200 m to 1300 m asl in the east slope,the tree residues are dominated by Larix olgensis,as well as Picea jezoensis var.komarovii,Abies nephrolepis and Betula platyphylla etc.The palaeovegetation is similar to the current.In 2150 m asl of the east slope where the current vegetation is tundra,the only species of residues found under the pumice is Larix olgensis.Because of volcanic eruptions,the timberline lowered from original 2200 m to current 2000m asl.The forest from 2000 m to 2200 m asl was replaced by tundra after the events.The timberline is getting higher,but very slow.In the bare land of volcanic rock, vegetation succession model is.lichenes-moss-vascular plant communities,and the pumice bare land is occupied directly by vascular plants.
  • REGIONAL DIFFERENCE OF THE GLOBAL CLIMATIC CHANGE AND ITS IMPLICATIONS
    Ren Guoyu
    1993, 13(1): 62-68,96. https://doi.org/10.13249/j.cnki.sgs.1993.01.62
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    More and more attentions have been paid to the global warming caused by CO2 concentration in atmosphere.It may be considerably important for geographers to investigate the responses of every region in the world to the global temperature rising.The regional differences of temperature increase and rainfall change relating to the CO2-induced global warming have been reviewed,and the implications of the regional differences in climatic change,both for ecosystems and the agriculture over each continent, have been discussed. The temperature increase will probably be more obvious in the high latitude zones than that in the low latitude zones,and the rise of summer temperature in the eastern U-nited States will be larger than that in the eastern China.It has been confirmed that the central North America will become drier in a warmer earth,while North Africa,most parts of India and the eastern China will be quite possible to experience more humid climate on the background of the future global warming. Some regions on the earth will suffer from the global climatic change,others will benefit from it.The author,therefore,considers it possibly difficult for all the countries of the world to reach an agreement on the action to deal with the CO2 problems in the coming years.
  • THE SYSTEM DYNAMICS STUDY ON THE POPULATION CARRYING CAPACITY OF LAND IN QINGHAT PROVINCE
    Yang Xiaopeng, Zhang Zhiliang
    1993, 13(1): 69-77,96. https://doi.org/10.13249/j.cnki.sgs.1993.01.69
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    This essay makes a high-level,multiaspect synthetic study on the relation of population and resources through building system dynamics model of carrying population capacity of land resources in Qinghai Province on the basis of theory of resource-resource ecology-resource economy science,on the three main levels(balance relation among all kinds of the resources,mate relation of agriculture structure and resource,forecast of per unit yield potentiality and simulation of total yield potentiality). From the beginning of synthetic analysis of system condition of population carrying capacity of land resource,this essay builds simulating models of seven sub-systems, such as water and land resource,plantry,animal husbandry,fishery,consumption and population,etc.Through revealing the relation and affection which changed accompany with time between the factors in the population carrying capacity to discribe correctly the relation between the sub-system and inner subsystems that mentioned before,thus build tendency model of this area on population carrying capacity of land resource.This essay gets a series of rational results for the changing tendency of carrying capacity of land resource and makes a primary study.
  • SPATIAL-TEMPORAL STRUCTRE OF"TERRITORIAL SYSTEM OF TOURISM"——GEOGRAPHICAL PROCESS OF DALI RESORT IN ITS DEVELOPMENT
    Liu Weiqiang
    1993, 13(1): 78-84,96. https://doi.org/10.13249/j.cnki.sgs.1993.01.78
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    The structrue bears the skeleton of a system.Upon"Territorial System of Tourism"(TST),TST spatial-temporal structure presents the dynamic process of TST development,temporal characteristics of spatial,as well as inter-regional and infra-regional correlation.In this sense,the study of the structurc is the key point for grasping the TST characteristics. In this case study,the dynamic process of tourism development in Dali is divided into 3 stages,taking historical change of regional background as the primary factor,with spatial reference tothe temporal situation of accessibility.Analysis lies in the characters of destination function,tourist type,travel pattern,together with the relative scale of tourist destination of each stage,by perspectively mapping its spatial distribution and inter-regional,intra-regional correlation.