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  • 2000 Volume 20 Issue 6
    Published: 20 November 2000
      

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  • LU Da-dao, LIU Wei-dong
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    Since the 1980s, economic development in China has been remarkably vigorous as a result of the smooth but continued opening and reform and the gradual development of a socialist market economy. Indeed, fast growth has been turbulently transforming the physical, social and economic structure of different regions, leading to increasing regional disparity of development. Issues related to regional disparity have been deeply concerned by both state and local policy-makers, and the whole society as well. At present, the Chinese central government is making great efforts to accelerate the development of the west region, with the hope of smoothing the gap between the west and the east. Regional development and disparity, however, are the result of handful factors, and can not be well understood by the sole policy explanation. Among these factors, geo-factors are fundamental. From the perspective of human-nature relation, geo-factors that effect regional development are the nature part in such a relation and the spatial structure resulted from the interaction between human activities and the nature, including natural conditions, location, endowment of natural resources, eco environment and infrastructures. Compared to economic factors, the geo-factors have a steady and prolonged impact on regional development. This paper analyses the regional features of geo-factors, stresses their functions in regional development and their significant role in policy making, and raises suggestions to future regional policy making based on such a geo-factors analysis.
  • ZHANG Yao-guang, HAN Zeng-lin, AN Xiao-peng
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    According to the concernings of China regime of territorial sea," the china exclusive economic zone and continental sheef law"and the United Nations convention on the Law of the Sea,this papers tudyres the delimit ation of the cuslodial scope of maritime space between China and other marine neighbouring countries,so as to defend the marine rights and interests of our country.This paper expounds the positions of the maritime rights and interests of china and neighbouring countries overally,the problems facing with the delimitation of China and marine heighbouring countriess the present trend of sea areas between countries and the principles of delimitation of our country's sea area; points out eact the essence of controversy of maritime rights and interests is for enlarging managerable maritime space, scrambling maritime resources; proposes our country's view of solving the controversy through shelving controversy and joint exploitation.
  • CHENG Guo-dong, ZHANG Zhi-qiang
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    West China goes across 10 provinces,with an area of about 5.43?106km2 and 2.85 ?108 population ,which accounts for 56.6% of the total area and 22.8% of the total population of China respectively, West China hasa vast area and is the most vulnerable ecological area. The natural geomorphology of Northwest China and Southwest China is widely different. The vulnerably ecological characteristics of West China are severe water and soil erosion, continually developed desertification, low vegetable coverage, increasingly degenerated grasslands, lack of water resource in Northwest China, frequently occurred landslide and mud-rock flow, and so on. Ecological construction is very important to the sustainable development of West China region.Based on the assessment of the eco-environmental status of West China, the issues that existed in the ecological construction and the urgent scientific, social and economic problems that needed to be solved are analyzed in this paper. The aim of ecological construction in West China is also put forward in the paper. In the end, the authors propose some proposals for the policy of the ecological construction in West China in the first half of the 21st century.
  • FAN Sheng-yue, ZHOU Li-hua
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    Although the work of research and rehabilitation of land desertification in China have passed half a century, the desertified land, however, is still spreading at 2460km2 annually, and still have the trends of accelerating deterioration. Therefor we are required to look back the former research and rehabilitation work we have done, and to find the sticking point of land desertification. Contemporary desertification is caused mostly by undermine of human livelihoods to natural resource, and the essential reason is the excessive pressure of population. While the current instruments cannot resolve the key problem. The theory of deserticulture will combine the desertification prevention and cure with the economic development tightly, and will provide a brand-new method for the desertification prevention and cure and the economic development in China.
  • GONG Zi-tong, CHEN Hong-zhao, LIU Liang-wu, LUO Guo-bao
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    Environmental change of soils is an important component part of global change. The type of paleosols of China is diversified and has considerable difference in various regions. Environmental problem of soils is serious in the last 100 years and in future, which has directly impacts on the sustainable development of national economy in the 21st century. The present paper deals with historical evolution of soil mantle, change of soils in the last 100 years and the tendency of soil change in future. Environmental change of soils depends on natural factors and human activities and the latter plays more vital role with time. Of course, to study environmental change of soils acquires a deep understanding not only for the process of soil change, but also for the function of soil evolution. At the same time, it is necessary to estimate the status and quality of soil change, as well as its society, and to make a global or national strategy for harmony between soil environment and human activities.
  • YE Qing-hua
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    Based on the latest research on eco-environmental situation and analysis of the characteristics of eco-environmental situation in China with the principle of choosing index, a set of indices on the eco-environmental situations in China has been brought out. And the mathematical models for each index has been created. With the powerful systematic analytical tool, GIS, and data base management system, this thesis classifies each index, calculates their weight by county-level unit, and colligate them into a holistic map of the eco-environmental situations in China. Analysis from the map indicates that the serious eco-environmental situation is mainly distributed on the strap of geophysical transition and the lands used by unstable human activities-especially those places that farms and range lands inter-located or crossing lands between different administration units which show obvious characteristic of interface and undulation. The greatest critically ecological situation belt is situated on the second terrain between the eastern lower lands and the western higher plateau, which occupies from the northeast to the southwest. To the eastern and the southern areas of the belt, ecological situation is obviously better, especially those along the coastal zones. It will provide references to the policy makers and benefit regionally environmental exploration and utilization in the near future.
  • LIU Ji-sheng, CHEN Yan-guang
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    The theoretical foundation is laid and the applied methods are demonstrated for the gravitational models of fractal cities. The generalised urban gravitation expression is derived out as Iij=GijMαiiMαjjr-bij by means of the geographical fractal theory, especially, the city size-output relationship, y=CPα. The parameters, α and b, are made clear to have some meanings of fractal dimension, and the gravitational ceofficient is defined as Gij=GCiCj|Rij|/(1+Sij),where G is a dimensional transformation coefficient, C is a proportional coefficient, Rij is a coefficient of correlation, and Sij is a coefficient of similarity. The gravitational theory developed by the authors in the paper is applied to the urban system of Changchun in Jilin and the cities of Zhengzhou, Kaifeng,and Luoyang in Henan, China, to show how to use the gravitation models in practice, and based on the examples mentioned above, it is discovered that the resultant of gravitational forces between a city and each of the other cities in an urbon system conforms to the rank-size rule in due conditions, i.e., Fi(k)=F1k-q,where is rank, and F1 and q are parameters.
  • WU Zong-qing, CHAI Yan-wei, ZHANG Zhi-bin
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    In the study field of shopping behaviors in commercial geography, China is, in the whole, far behind the foreign countries, although its research on retail spatial networks, mainly based upon the location theory, has made great progress. In practice, most of today's Chinese retailers find themselves in the dilemma. The purchasing ability and shopping behaviors of urban residents are becoming important and crucial factors in the urban retail market, especially in the status quo of structural surplus in merchandise supplement,while the retailers' marketing ideas are still lagged in the times of traditional planned shortage economy. All of these push Chinese commercial geographers to make such research on the characteristics of shopping behaviors of urban residents in China. Initially, the authors, based upon the questionnaires for urban residential trip in Tianjin City, China, analyze and conclude the characteristics of shopping behaviors. Then, an aggregated shopping trip distance and the ring-shape structure of shopping activity space for different hierarchical commodities for Tianjin's residents are put forward. The ring-shape structure shows a tendency of distance-decay in the hierarchies of commodities. The shopping space for the hierarchy of food and vegetables from the consumers' family-sites is about 0.5 km, which is, to some degree, the spatial scope of neighborhood in China's cities; that of the goods of everyday use is about 1 km, indicating the servicing space of a community; that of the durable commodities is about 6 km, almost the distance of the mean spatial radium of Tianjin City, which indicates that residents have to prefer to inner City to purchase such commodities, especially for the residents in such City with a solo-core as Tianjin City. The authors make further study on the purchasing frequencies of different hierarchies of commodities, and find out that they show a positive relation with the shopping space as a whole, but the business suit and electronic appliances are not the case. The discrepancy reflects the scope economy in commodities with high hierarchy in high grade shopping centers, for both retailers and consumers. For the shopping time allocation, consumers in Tianjin City show two crests which concentrate from 9 am to 11am and from 3 pm to 7 pm respectively, although there are a few discrepancies between Sunday and Monday. For the constraints of noon break and night sleep, the periods from 1 pm and 2 pm and from midnight to daybreak see less consumers go out for shop. All of these is much different from Japanese urban consumers who can shop throughout the night and feel less constrained in the day time. Although multi-purpose shopping trip is an evident tendency in the West, more than 80 percent of Tianjian's consumers just shop for shopping. One-shopping-trip is the main mode for residents in Tianjin City to shop, and a possible explanation lies in the fact that 95 percent of consumers would rather shop on feet or by bicycles than shop by automobiles.Based upon the characteristics of shopping behaviors of Tianjin's residents, the authors bring out some suggestions and measures to government for urban commercial planning, and to retailers for marketing strategies.
  • MA Yan-lin
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    As we know, sustainable agriculture and rural economy development (SARD) is a essential precondition and foundation for mankind sustainable development of economy and society. At present, study on SARD has been the focused point in the world. Study about mechanism and mode on oasis sustainable agriculture and rural economy development is key part of study on sustainable agriculture and rural economy development. Turpan basin, located in the east part of Xinjiang, is the most typical oasis area that is very famous for its climate of dry and heat and strong wind, then it is called fire region and wind storeroom". Talking of oasis agriculture, this area, teeming with many crops including cotton and grape and melon, is more typical. Having made a great progress in agriculture and rural economy since liberation, this area is also facing high pressure and challenge for its sustainable development. So taking Turpan basin as one case, studying mechanism and mode on oasis sustainable agriculture and rural economy development is a pressing work. Trough analyzing the situation of Turpan, the paper pointed out that there are some factors which influence the system of agriculture and rural economy development, mainly including government macro-adjustment factor, traditional institution and system, market factor, science and technology factor, peasant household behavior factor. It points out that at present institution factors is the most important one to change agriculture production structure and promote rural development in Turpan area. The change of agriculture production structure and rural economy during our government taking reform and open policy is the best witness. With deepening reform and enlarging open in China, the market system shall be set up gradually, then market factor will bring into playing more important role in promoting sustainable development of agriculture and rural economy in this area. Meanwhile effects on agriculture and rural development for science and technology factor , peasant household behavior factor playing were discussed. Mang data were used in analyzing. After analyzing these factors, a frame graph about relations among factors and action mechanism was drawn(Fig.1).At present, because macro-background of agriculture and rural economy development has taken place a great change, agriculture business management is inevitable trend. In Turpan basin, market agriculture + resource intensive use and process oriented type" will replace the old mode.Lastly, discussing and summing up the experience of local people's practice on developing ecological agriculture, the paper brought out one model named grapery ecological farm in arid area, which embodies the three main targets of SARD (Fig.2), namely well nurture and warm cloth, becoming rich for farmers and utilizing resources and environment for ever.
  • LIU Hong-yu, LU Xian-guo, LIU Zhen-qian, YANG Qing, ZHANG Bai
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    With a large area, various types and complex landscape structure, wetlands in the Liaohe Delta have many benefits to the regional economic development. Based on the classification system of wetlands, the present situation and distribution characteristics are studied through RS and GIS techniques. There are 314,857 hm2 of wetlands, which account for 79.5% of the total urban area; among which there are 159,919 hm2 of natural wetlands and 154,838 hm2 of artificial wetlands, accounting for 50.8% and 49.2% of the total wetland area, respectively. Because of the regional resources exploitation for many years, wetlands have changed a great deal in area and structure. Some strategies are put forward in this paper to protect the ecological function of wetlands and solve the problems of the sustainable development between resources exploitation and wetland protection.
  • ZHANG Xu-ping, ZHANG Yi, HOU Wei-ling, YIN Xiu-qin
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    This study applies the method that the bags with different size meshes exclude the functions of different kinds of soil animals to compare the decomposing function of the soil animals to coniferous litter. The studying results show as: the decomposing speed of the bags with big meshes, under functions of all kinds of soil animals, faster than the bags with medium meshes, under functions of medium and small soil animals, as well as the bags with small meshes that excluding all possibility of functions of soil animals; in the process of decomposition of litter, relationship of the litter lost weight with number of soil animals is not obvious clearly; the degree of functions of soil animals to soft litter higher than hard litter; according to the analyses of diversity index, no regular changes will happen to the diversity of soil animals as the time of decomposing samples lengthen .
  • WANG La-chu, XU You-peng, ZHANG Li feng, SHI Yun-liang, WANG Wen-fu
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    The hydrography of karst water is specificity and complexity because of the special geomorphological structure and geological structure. As a case study at Houzhai underground river basin in Puding County, Guizhou province, the karst hydrological characteristic and the karst hydrochemistry characteristic are description based on analysis the formation of karst water in this paper. The storage structure and the geomorphological structure or geological structure relationship, the fissure flow and the conduit flow conversion are also description through the pulse test and the precipitation pulse. In the karst peak forest depression, the karst is bare carbinate bedrock and fissure is development. There are sinkholes or infundibulars in the depression and they link the underground river directly. In this area, the storage capacity is low and the hydrography is sharp. The hydrograph is agile response for the precipitation. The base flow in the hydrograph is small.In the peak valley, the karst is covered by topsoil. The collecting area is larger in this area than in the peak forest depression area. The conduit distribution is treelike. The karst storage capacity is high and a mount of fissure flow or conduit flow recharge the outlet after the peak, the hydrograph decay is slow and base flow is high. The storage capacity of covered topsoil and conduit in karst polje is larger than it is in peak valley.With the analyzing the decay curve of the outlet of the underground river basin at Maoshuikeng station, the conduit storage is 3%-10% of the total water storage and fissure storage is 90%-97% of the total storage.The karst hydrochemistry types in the basin are simple. The type is fresh water with low mineral and low hardness. The hydrochemistry characteristic is varying with the hydrograph alteration and the geomorphological structure distribution in the area.This method that using in this paper is useful for karst water research in various storage medium structures. The result is a referential for karst hydrological simulation and karst water resource using.
  • LI Lei-lei
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    Image study is a popular theme in many disciplines because of the wide range of the perceptional objects. The image to a person, the image to a piece of art like a photograph, a picture or a novel and the image to a corporation or the image to an area like a city, a district, a country or a people, can all be studied academically in sociology, economics, literature, art, management, urban studies and tourism geography. However, geographical image studies both in and out of China have not yet attracted enough attentions to the geographical attributes and spatial process of the image object. In this paper, based on the idea of tourist destinations as a type of geographical areas, the author tries to discuss and deduce the spatial process and rules of how tourists percept destinations. The paper begins with a general introduction on principles of regions' hierarchy and spatial differentiation in geography. Based on the basic idea of space and region in geography, it is proposed that there exists a kind of 'areas ladder' constructed by areas hierarchy. With such a ladder in the mind, tourists can percept the geographic sites of all kinds of potential destinations. Such a ladder is named by the author as 'perceptional chain', which reflects the geographic context of regions in vertical hierarchy relationship, and has impacts on tourist image perception. Thereafter, three rules on the spatial characteristics of tourist destination image perception, namely, context rule, adjacent rule and resemble rule, can be deduced. As a result, image substitution in tourists' perception process can be easily understood. Context rule or context substitution can be used to explain that tourists tend to percept the higher destination in perceptional chain at first. That is to say, any area's image is cognized with the higher region as a background. Any one area can be understood only in the areas' context, and it is easier for people to know and remember the larger and higher areas in the ladder. Tourists tend to percept the images of lower regions as the images of higher regions if they don't know well these lower regions.As far as adjacent rule and resemble rule, the author notices that when tourists percept the regions in the same hierarchy or ladder, they tend to conceive these areas images as a unity if these areas are believed to be near in space or have some resemblance in natural or cultural elements. That is to say, one area's image can be conceived as another one if they are adjacent or resemble. Furthermore, distance between origin and destination, esp., cognition distance, as well as information possessed by tourists, has different and complex effects on image perception. A detailed discussion on these effects is also made in the paper. At the end part of the article, content perception of tourists to destinations image is analyzed and discussed on the basis of the conception of tourist destination typology and 'place identity' in geography. It is thought that tourists can get a more detailed and clearer image by the perception from the main destination types to the detailed place of destinations.
  • ZHANG Shu-wen, BO Li-qun
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    This paper discusses a specific method to be used to extract arable areas efficiently and effectively. As a key step, the classification method of remote sensing image processing is often regarded as one of the most important technological systems in crop estimation. Considering the features of natural environment, economic conditions as well as growing procedure of corns, based on the characteristics of the TM data, author puts forward an ecoland classification method (also called geoprocessing method) by which precision classification would be conducted in the project. The ecoland classifacation method is basically divided into three steps: the first one is called subarea in which similar spectrum is put into one group, that is, there is almost the same ecologic environment in the area, combined with GIS data such as social and economic statistics data, in this way, better recognized land patterns; the second is an extraction stage, based on the sublayers, different patterns can be easily extracted by means of geodata stored in the database; the last one is considered as a merge and analysis part, different classified subareas would finally be merged together in the basis of the same coordinate, subsequentlly, a synthetic analysis on the merged result should be made.As a result, coordinating with field surveying data in the process of automatic classification, the classified image with geodata is produced by means of the TM data source and can be easily extracted out related information for the further applications.
  • HA Si, WANG Gui-yong
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    Data from different types of dunes suggest that the near surface air-flow over dune lee side varied with dune morphology and primary wind direction relative to dune crest-line. It is found that three types of secondary air-flow exist according to their directions and magnitudes, they are: return flow, attached and not deflected flow, and attached and deflected flow. Return flow, characterized by lower velocity, occurred on stepper lee slops in transverse flow conditions; attached flow with higher wind velocity occurred on gentle lee slops. The attached flow could be deflected in the oblique primary wind environment but not deflected in transverse flow conditions, and its magnitude is the cosine function of primary wind direction relative to dunes . According to the nature of three types of secondary flow, the authors expound the corresponding sedimentary processes and possible stratification types, and also discuss the aeolian cross-strata as an indicator of paleowind environment.