中国干旱半干旱地区风蚀气候侵蚀力的计算与分析  

Study on the Wind Erosion Climatic Erosivity in Arid and Semi-arid Areas in China

作　　者：董玉祥[1] 康国定[1] 

机构地区：[1]中国科学院沙漠研究所

出　　处：《水土保持学报》1994年第3期1-7,共7页Journal of Soil and Water Conservation

基　　金：国家"八五"攻关项目

摘　　要：该文通过比较选择了联合国粮农组织所提出的风蚀气候因子指数计算公式，利用２３３个台（站）的气候资料，首次计算了我国干旱半干旱地区的风蚀气候因子指数值，以此阐述了我国干旱半干旱地区风蚀气候侵蚀力的基本特征，并就与风蚀气候因子有关的若干问题进行了分析和探讨。This paper makes choice of the estimating model which was given by Food and Agricul-ture Organization in 1979 from three estimating models for wind erosion climatic factors and com-putes first wind erosion climatic factors in arid and semi-arid areas in China by use of the data of233 climatic stations.On the basis of the wind erosion climatic factor computing,this paper analy-ses the basic features of wind erosion climatic erosivity in arid and semi-arid areas in China.At last,some problems relating to wind erosion climatic factors are studied,such as the relationship betweenCand wind velocity as well as C and precipitation,the differentiation of causes of desert and deserti-fication according to their relationship to wind erosion climatic factor and the relationship betweenwind erosion climatie factors and sandstorm days.

关 键 词：干旱半干旱 地区 风蚀 侵蚀力 中国 

分 类 号：S157.1[农业科学—土壤学]