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  • 1991 Volume 11 Issue 4
    Published: 30 July 1991
      

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  • Chen Chaohui
    1991, 11(4): 291-298.
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    Based on the investigation to mountainous region in South China,a dynamic classification of soil erosion are advanced in this paper.The basis for classification is mainly rock series and dynamic state of soil erosion.Control measures are put foreward against different kinds of soil erosion.The theory and experiments in South China for the classification are also introduced in detail.
  • Cheng Weimin, Xie Binggeng
    1991, 11(4): 299-307.
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    Jiangnan designates south of the lower reaches of the Changjiang(Yangtze)River.On the basis of the research on some typical districts in Jiangnan Hills Region,by using the theory and methods of landscape ecology,the ways for constructing efficient and reasonal agricultural landscape ecosystem are explored in this paper.The authors suggest that the existing agricultural system be regulated and the new one be designed and constructed.
  • He dong
    1991, 11(4): 308-312.
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    As one of the three dominant beverages in the world,coffee occupies an important position in international trade.The demand for coffee in China increases rapidly but its production develops slowly.Based on the analysis of natural conditions in Western Guangdong,the author considers that the environment there is suitable for coffee growth.But it is necessary to adopt some measures to decrease the damages from strong wind and cold air.Some suggestions are put forward as follows:take preferential policies to support coffee production;make appropriate developing plan;enhance technical training and service;pay more attention to the technical processing and development of new products;restrict importation and guid consumption.
  • Xie Guogan, Huang Shiman
    1991, 11(4): 313-319.
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    The resources of Meliaceae plants in Hainan Island are systematically expounded in this paper.The habits and characteristics,distributions,living environment,uses and cultivation of thirty-nine species in sixteen categories of Meliaceae plants in Hainan Island are introduced briefly,and eleven of them,which are of great value for cultivation and exploitation,are recommened.Some suggestions for utilization and protection of Meliaceae plant resources in Hainan Island are put forward.
  • Zhuang Yimei
    1991, 11(4): 320-327.
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    The three characters of soil mellowness in subtropical red earth orchards in China are researched in this paper.First,the normal direction of soil mellowness is that the soil fertility(nutrient contents and enzyme activities)will increase with the extension of cultivation duration,and higher level of soil fertility will be maintained if comprehensive agricultural managements are applied.Second,the soil mellowness includes three stages:(1)the mellowness is restricted to the root zone soil in the young orchard,(2)the mellowness will cover the whole area of the mature orchard as the mellowed soil increases year by year,(3)a satisfactory soil mellowness level in the whole orchard over the fruit production period is maintained.Third,a close relationship is found between mellowness level and enzyme activities of the soil.There is a significant positive correlation between enzyme activities and nutrient contents(available and total nutrient)as well as among several kinds of enzyme activities. Therefore,the soil enzyme plays an important role in the soil mellowness in red earth orchards. The author considers that the indexes of soil mellowness(nutrient contents and enzyme activities)of red earth orchards can be used as the parameters for evaluating soil fertility level.It is emphasized that combining application of organic and mineral fertilizer will increase not only the nutrient contents but also the enzyme activities of the soil.The author suggests that the optimum amount of organic fertilizer in the red soil orchard account for about half of the annual total of fertilizer(nitrogen).
  • Chen Xiaoping
    1991, 11(4): 331-337.
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    In the past six years,Zhanjiang Economic and Technological Development Zone procured a tremendous progress with an upward tendency in the exploitation of foreign capital.This achievement demonstrates the logical outcome of the proper implementation of the opening and reformation policy.The superior economic geogra phical conditions and abundant natural resources of Zhanjiang are playing the role of objective reassuring function.However,Zhanjiang yet confronts with many adverse factors in contrast with the Zhujiang Delta both in land requirements man power qualifications.Hence,Zhanjiang Economic and Technological Development Zone is to,hereafter,call its economic geographical advantages to full play,grasp local resources as a footing,perfect investment environment,so as to strive for further successes in the exploitation of foreign capital.
  • Yang Ying
    1991, 11(4): 338-345.
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    In this paper,the trend of the world economy,the requirement of regional economic development,and the inevitability of economic cooperation between Hong Kong,Macao and the Zhujiang Delta are analysed;It is suggested that the industries of the three areas be developed on the principles of mutual complement,mutual benefit and mutual acceleration.The ability to deal with emergencies in the coalition development of the areas be enhanced;an integrated development program be formulated;the markets be diversified and the infrastructure construction be unified.
  • Jack F. Williams
    1991, 11(4): 346-356.
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    In the last decade considerable attention has been focussed on Hainan and its development efforts.As part of that process,frequent suggestions have been made that Hainan might copy the Taiwan"model" of development,given a number of physical and cultural similarities between the two Chinese islands.Taiwan's success is indisputable,no matter what indices are used.However,development is a complex process and,must be examined from the perspective of both the philosophy or objectives of development as well as specific policies designed to achieve development goals.Development should be aimed at improving the broad welfare of the commoncitizens in the economic,social,and political spheres.This has been the experience of Taiwan.A distillation of the extensive literature on Taiwan's development experience produces a list of both internal and external factors that explain or account for Taiwan's success.The internal factors include:focus on comparative advantage;correct sequencing of development;export-expanding strategy;realistic monetary policies;strong agricultural sector;rural industrialization and controlled urbanization;right degree of government involvement;enhancement of human resources through education;public investment in development projects(especially transportation and infrastructure).The external factors include:U. S. economic aid during the formative period up to Take Off in the 1960s;access to the huge U.S..and world economicsystem in terms of export markets,capital and technology,political and cultural linkages;luck in historical timing.Some of the internal factors of the Taiwan model might have utility in Hainan's development plans.Moreover,Hainan must also learn from Taiwan's mistakes: environmental pollution;increase in social unrest,corruption,crime;excessively imbalanced foreign trade and consequent foreign relations problems.
  • Xu Qingfeng
    1991, 11(4): 357-362.
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    The urban and rural residents in Guangdong Province have benefited a lot from the Economic System.The living standards of both urban and rural residents have risen remarkably.As the starting points are different,the living standard of rural residents has risen faster than that of urban residents.But on the whole,the comparative relation of the living stanuard between urban and rural residents has not yet changed much,and the living standard of urban residents is still much higher than that of rural residents though the differences have diminished gradually or partly eliminated.The model of high incom and high consumption of urban residents,compared with that of rural residents,is the main cause of their unsatis-factory increase of savings.
  • Jiang Zhongjin
    1991, 11(4): 363-368.
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    In this paper,the resources of nonferrous metals in Africa are evaluated from the resource geography.The formation,development and distribution of the mining industries are analysed.The author believes that mining industries of nonferrous metals in Africa have still vast,considering its enormous poten-tialities in mineral resources which occupy an important place in the world.
  • Chen Changming, Liu Minghua, Zhou Zehua
    1991, 11(4): 369-377.
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    The characteristics,formative mechanism and evolution law of columnar peak malmstone geomorphy in Zhangjiajie are analysed in this paper.It is considered that the columnar peak geomorphy results from cutting action along vertical joints of the rock and rapid elevation of the area caused by the activity of Hunan-Guizhou paleorift in the late period.According to the authors calculation,since Pleistocene Epoch the crust has risen by 938 meters.The author suggests that the influence of crust movement upon large engineering constructions in this region be investigated.
  • Huang Shaohui, Liu Yuxiang
    1991, 11(4): 378-384.
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    Changzhou Island is situated 15 km southeast of Guangzhou City,in the Zhujiang River,covering an area of 6km2.There are plentiful and attractive human and natural tourism resources with over twenty scenic spots on the island,including the site of Huangpu Military School,which was called one of the five famous military academies in the world.With the urban construction expanding to the eastern part of Guangzhou City,the tourism resources on the island should be exploited as soon as possible.Changzhou Island can be divided into 4 scenic districts.The authors suggest that the site of Huangpu Military School be exploited first,the progressively other scenic spots and finally the island be built into a comprehensive tourist area.