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  • 1988 Volume 8 Issue 3
    Published: 30 May 1988
      

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  • Cheng Weimin, Xie Binggeng
    1988, 8(3): 201-211.
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    Ay using crosscut function and weight average fuzzy comprehensive judgement,the north boundary of mid subtropical belt in Hunan Province can be clariFed.The result shows that it extends roughly from Lianyun Mountain,Wangcheng,Huaminglou in Ningxiang County,Longtang in Anhua County,Dongtingxi in Yuanling County,Zhangjiajie in Dayong County to Hekou in Shimeng County.
  • Huang Guangqing
    1988, 8(3): 222-230.
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    Zhongshou City is located in the Zhujiang Delta.In recent years,its rapid economic development has brought about some contradiction between its natural environment and urban construction.In order to solve the problems,the environmental conditions such as land forms,geological structures,hydrological features and climate are analysed in details.The environmental qualities of different land types in the suburb are also evaluated.Based on above analyses,it is suggested that the new planned district should be placed to the east of the old districts of the city.
  • Bian Hongxiang
    1988, 8(3): 231-240.
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    According to typical drilling sections and other geomorphologic data,the structural features of landforms and the historical changes of the Dongting Lake area are analysed,especially the changes of depositional environment in Quaternary period.The unfavourable consequences caused by the rapid retrogressive evolution of the lake are discussed,such as decline of the lake's capacity for regulation and storage of floodwater,increase of serious waterlogging and soak,exhaustion of aquatic resources,spread of schistosomiasis and pollution of various water bodies.
  • Zhang Shengcai
    1988, 8(3): 241-245.
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    In this paper,the natural conditions of the Jinjiang watershed in Enping County are analysed.The history and present situation of realignment of the Jinjiang River and development of its water resources are introduced.Some problems in water utilization are discussed.Finally,some suggestions about further renovation and utilization of the river system are put forward.
  • Zhang Ru
    1988, 8(3): 246-253.
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    Through field survey,it can be concluded that the vertical difference of solar radiation in Ximeng County is mainly caused by fog and the undulating topography.Below the elevation of 900m,the minimum air temperature decreases with the increase of elevation.But it increases from 900m to 1500m.This inversion layer varies according to the changes of weather types.The average inversion intensity is 0.3℃/100m and the maximum intensity 1.4℃/100m.There is also a difference between higher elevations and lower elevations in the date of minimum temperature event.So,the meteorological data at lower elevations can not be calculated from those at higher elevations.
  • Wen Chang'en
    1988, 8(3): 254-260.
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    As the oldest and biggest one of the four Special Economic Zones (SEZs: Shenzhen,Zhuhai,shantou and Xiamen) in China,Shenzhen has many favourable conditions for its development,such as superior geographic location adjacent to Hong Kong with convenient communications and rich natural resources.It not only has been foregoing rapidly ahead but also has great potentialities fair its further grpwth.In order to meet the new need of Shenzhen's development,a project of geographical map-composition(GMC) was conducted by using remote sensing data and through field survey.Satisfactory resuits have been obtained.The significance,principles,methods and effects of GMC in SEZ have also been discussed.
  • Rong Jinzu
    1988, 8(3): 262-269.
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    In this paper,a method of regional planning consisting of system analysis,predicting model and auxiliary decision-making system was applied to the overall social-economic planning of some counties in the north and the east of Guangdong Province.In system analysis,the overall planning was decomposed into essential parts by using basic struotural diagram.Then the system variables were divided into determinant variables and status variables.Further,the impacts of their fluctuations on the system were examined in terms of input-output analysis model or statistic methods.The rationality of resource distribution was also discussed.In predicting models,only consecutive date of relatively recent years were used to avoided the difficulties caused by the inconsequentive historical data.In auxiliary decision-making system,with input-output model as the core,all the subsystems and the overall planning model are resource-restrictive.The production fuction model was used for tendency analyses of labour-power,capital and technique index.Through the combination of input-output model and Linear programming,at optimum overall planning can be obtained.
  • Liu Junquan
    1988, 8(3): 275-280.
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    Torrid red-soil in the southwest of Hainan Island covers an area of about 96310 ha.It is a kind of tropical soils developing under torrid climate environment.Because of the poor chemical and physical characteristics (very low hutrient content and very sandy) of the soil,abundant solar radiation and heat resources but short water resource in the area,torrid-resistant and drought-bearing crops should be taken as the dominant sectors in agricultural production.First,such tropical fruits and oilcrops as cashew,mengo and Jojoba,and then tropical grassland for live stock (mainly cattle and goat) grazing,should be developed.
  • Dong Wenjuan
    1988, 8(3): 281-287.
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    Libys is not only a desert country in North Africa,but also an important oil exporter in the world.In recent years,the government of Libya has been making an effort to develop the economy of its coast areas along the Gulf of Sirt.Owing to the rich oil resources and the advantageous location,the areas are becoming an export-oriented industrial belt in which petroleum industry and petro-chemical industry are the dominant sectors.At present,a number of steel plants at Misratah and petrochemical industrial factories at Brege and Ra's al UnGf are under constrution.The chemical fertillizer plants at Sirt will be built.These industrial centers and the old commercial city Bengasi are forming a petro-chemical,metallurgical and light industrial complex.This will undoubtedly promote the economy of the whole country.It is evident that the coastal economic development strategy can give full play to the national economic diversification and modernization of Libya.