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  • 1992 Volume 11 Issue 3
    Published: 15 September 1992
      

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  • Wang Hao, Fu Baopu
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    In this paper,a two-dimensional non-hydrostatic numerical model is developed. Using this model, we examine the climatic differences between river valley and dry valley under general background of the averaged climatic condition over a typical mountainous region on 30°N in China.The results show that the waterbody may make air temperature in valley increase at night and decrease in the daytime, air specific humidity increase, esp.t night.Due to the joint action of mountainvalley breezes and land-lake breezes, the wind speed over river valley is always larger than that over dry valley, the local circulations over river valley are more obvious than that over dry valley.This study also shows that the numerical simulation method is effctive in the study of climatic resources in mountainous regiont.
  • Chen Wanlong
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    A technique using gradient data obtained from short-term survey to estimate wind power resource over highland is introduced basec on the universal function developed by Businger etc., and data sequence extension method aswell as weibull distribution with two parameters.
  • Duan Deyin, Pan Liangbao
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    Slope wind is a dissipative structure, The thermodynamical instablizing conditions of slope wind is discussed, The critical Re is given to judge the thermodynamical instability of slope wind.
  • Qi Ying, Fu Baopu
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    In this paper, a few factors affecting the foehn of the east slope of Daxinganling mountainchain in Northeast China in January are discussed by using the two-dimensional atmospheric meso-scale numerical model. The results show. (1) The leading topographic factor resulting in Daxinganling foehn is the east steep slope of Daxinganling mountainchain. The eastern gentle slope further promotes the development of.Daxinganling foehn. And the small-scale redges can be niglected. (2) The large-scale background conditions are essential for Daxinganling foehn forming. The Daxinganling foehn can not occur when the scorer number (N/U) of the largescale background field is too great or too small.
  • Ma Naifu, Ni Guoyu
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    This paper calculates the degree of climatic disaster of a district through grey prediction and concludes that 1988 was an uncommon year of dryness and high temperature. It is clear that this method is feasible in analysing and predicting climatic disaster by quantity in mountain areas.
  • Chen Mingrong
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    The equation of equivalent accumulated temperature is ΣTe=(ρ0/ρ)ΣTh where ΣTh and p are the active accumulated temperature and the air density from meteorological stations respectively; h is altitude, ρ0 is the air density at sea level; Te is equivalent accumulated temperature. Using ΣTe to divide vertical temperature zones in Qinling Mountain Range, the limiting indexes of temperature zones correspond with those of plain regions in the eastern part of China.
  • Yuan Dehui, Weng Duming
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    In this paper, a new method of simulating monthly mean temperature in county-size mountainous areas is presented. Taking Longquan county, Zhe-jiang province as an example, some simulating formulate are obtained from experimental data. The climagraphes drawn according to these calculated data of monthly, annual mean temperature and various agricultural index temperatures can reflect the effection of topogragphy in more details and then is more valuable to indicating the distribution of heat resource.
  • Mao Zhengdan
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    Based on the climatic characteristics, the paper points out the difficulties and demands in mountain climatic evaluation that differ from those in the climatic evaluation of plain. The specific contents in mountain climatic evaluation including enviromental, ecological, social, economic, agricultural. industrial and urban evaluations are discussed.
  • Li Bingcheng
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    A large number of ancient geographical books is preserved in Dunhuang Manuscripts and Documents. In the light oi their contents the books can be divided into 3 parts:(1) the ancient local chronicles, including the localrecords of the whole country (3 volumes) and the local records of a part of the districts of northwest China (11 volumes). (2) the ancient travelling records, including the records towards Shiyuh (8 volumes). the records towards Wutai Mountain (5 volumes), and the records throughout the country(1 volume); (3) the miscellaneous geographical books, including the books with regard to the water conservancy (2 volumes) and the books about the scenic spots and historical sites in Dunhuang (2 volumes).These ancient geographical books are one part of the most precious books in Dunhuang Manuscripts and Documents. They have the extremely important academic value on the research of historical political geography,military geography, economic geography, folkways geography, traffic geography, urban geography, agricultural geography, physical geography, religious geography, toponomy and local chronicles. They are the extremely valuable legacies of Chinese ancient geography.
  • Wu Jiaping
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    The article is on the culture study of inhabiting geography about the Miao nationality and the Dong nationality in the subtropical hills in the Southeast of Gui Zhou. The Miao nationality and the Dong nationality are two ancient minorities in the South of China. Because of the differences of the the developing historical course and the viewpoint of value between them, the leveling distribution of two minorities and the verical verical distribution of them are different, the form structure and function of inhabitation are different too. The Dong nationality lives regularly and closely. The inhabitation usual is located in the two sides of river and the greater part of their buildings is Pile dwelling. It has public buldings-sings of inhabitation.But the Miao nationality lives irregularly and loosely and majority is located in the top or middle of mountains.It has no public building as sings of inhabitation. These difference and the reasons of forming them have point out in the article.The two type of cultural inhabitations-diverging inhabitation and converging inhabitation, are also divided in it according to the social culture of inhabitation and the manifestation of miss thought and action. Besides these the two sorts of cultural inhabitation are discussed respectively in the article.
  • Li Juzhang
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    Varying weight problem is proposed for solving the problem, it has diverse weight when condition is diverse.This paper affords the basic form of varyingweighted models, weight of factor is bigger according as factor more restricting objective.
  • Zhang Keying, Ma Youxin, Li Yourong, Liu Yuhong
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    This paper mainly discusses the climatic effects of SW monsoon and NE cold monsoon over ridges in the northern part of Ailao mountains, Yunnan province, ccording to the data of eight meteorological stations on east and west slopes.
  • Zeng Xianning, Miao Qilong, Fang Hong
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    In this study, an empirical model is presented for wind profiles under different stability conditions over the flat ground of the plateau by using the date from the Lasa Weather Station during the 1986 Tibet Atmospheric Science Experiments.
  • Li Jiangfeng
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    There is a warm zone in Mazha mountains and it is a dry layer. Agriculture, forestry, and animal husbandry are much effcted by the warm zone,and it aggravates the wind erosion of mountains in arid land and the sand efflorescence of oasis.
  • Sun Menglun
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    In order to analyse and evaluate the diffusion and air Pollution in mountain area caused by smoke mass, the variation of wind and temperature profile with height is observed in Qinling mountain area in the Summer and winter of 1988. The comparison between mountain and plain regions in meteorological conditions are made. Some good results are obtained.
  • Huang Xueqiao
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    A comfuting model of Solar radiation in mountain area based on Geographic Information System(GIS) is introduced in this paper.Radiation on sloping surface is computed by using digital spatial data of solar radiation on horizontal surface and Digital Terrain Model, composed of digital data of elevation, Slope gradient and aspect as input data.
  • Qian Huaisui, Li Mingxia
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    Using Statistical methods, this paper analyses the distributive Characteristics of precipitation and Storm rainfall in the transitional zone between Qinling Mountain Range and Huang-Huai Plain. According to the convergent law of water in gaseous and liquid State in the raining duration, the mechanism of the orographic influence on precipit tion process is discussed.
  • Li Zhaoyuan, Dong Yafei, Zhou Suoquan, Xiao Yongquan, Wu Suliang
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    Based on observational data in Zhiwuilng region, the pricipitation regred-ssion equations are established by using small grid method. Also, the general istribution of pricipitation in the all region is obtained.
  • Chen Zhipeng, Chen Wanlong
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    Based on the temperature series of three-month over the eastern &. northern region of the Dabieshan mountains, a one-year range of temperature data is obtained by using natural orthognal function and least square method. The extended data resembles the observational data with the relative error between 4.1%-13.6%.
  • Yu Qiang
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    In this paper, the topographical factors influencing low temperature distribution are parameterized and the quantitative relation between low temperature and topography is established by statistical method.
  • Chen Zhenghong
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    This paper first reveals horizontal distribution property of six forest fire index in western Hubei: (1) Forest Fire Danger (FFD) shows geographic differentiation and similarity. (2) FFD decreases from north to south. (3) Northwestern part of Hubei proviuce is the highest FFD district; (4)2/3 part of counties (cities) belongs to low FFD. Then it analyses the vertical structure of forest fire index, height from 1600 to 2000m has the highest fire index, and thd index decreases at either higher or lower height.The above characteristics can be reasonably explained by distribution of terrain and its microclimate.
  • Pang Xiaomin
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    With the development of socio-economy and the rapid advance of science and technology, the function of industry in the national and regional socio-economic development has been evolving accordingly, leading to the change of industrial location factors and industrial spatial structure.In last decade, such a change was mainly manifested in the enhancing of the influence of technical, social and institutional factors on industrial activities and their to-cation, and the development of international industrial cooperation. To deal with these changes, new methods and contents of industrial geography have been developed, which could be used for reference by Chinese industrial geographers.