干旱区研究2017，Vol.34Issue(5)：1196-1202,7.DOI:10.13866/j.azr.2017.05.30
论沙漠-绿洲过渡带的风沙防护效应
Effect of Protection against Wind-drift Sand over Desert-oasis Ecotone
摘要
Abstract
The wind speed,local circulation and granular properties of surface sand over the desert-oasis ecotone in the Heishanzui area in Dunhuang were studied using a portable gradient wind measurement system during systematic weather processes and other methods.The effect of protection against wind-drift sand over the desert-oasis ecotone was analyzed.Because of the differences of material composition,spatial structure and water-thermal conditions between desert and oasis,there is a "cold island" effect and a local circulation.From the desert to the oasis,the mean grain size decreases gradually.There is a regularity in the variation of skewness,kurtosis and sorting coefficient.The effect of protection against wind-drift sand has a linear correlation with initial wind speed,distance and roughness.It is inversely proportional to the initial wind speed.But it has a positive correlation with the distance and roughness.关键词
沙漠-绿洲过渡带/局地环流/风沙危害/防护效应/敦煌Key words
desert-oasis ecotone/local circulation/sand hazard/effect of protection against wind-drift sand/Dunhuang引用本文复制引用
安志山,张克存,谭立海,蔡迪文,张余..论沙漠-绿洲过渡带的风沙防护效应[J].干旱区研究,2017,34(5):1196-1202,7.基金项目
国家自然科学基金项目(41371027,41371102)资助 （41371027,41371102）
