Characteristics of the lower layer of sandstorms in the Minqin desert-oasis zone

作     者：ZHAO Ming ZHAN KeJie YANG ZiHui FANG ErTian QIU GuoYu WANG QiangQiang ZHANG YinChang GUO ShuJiang LI AiDe ZHANG JingChun 

作者机构：Gansu Minqin National Station for Desert Steppe Ecosystem Studies Wuwei 733000 China Gansu Desert Control Research Institute Wuwei 733000 China Key Laboratory for Urban Habitat Environmental Science and Technology School of Environment and Energy Peking University Shenzhen Graduate School Shenzhen 518055 China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2011年第54卷第5期

页      面：703-710页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 09[农学] 0706[理学-大气科学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：supported by National Natural Science Foundation of China (Grant Nos. 30872069, 30960321) National Commonweal Special Research of Forestry of China (Grant No. 200804031) 

主　　题：Minqin the lower layer sand-dust horizontal flux vertical deposition 

摘      要：By measuring the sand-dust flux,vertical deposition,and the wind velocity throughout 19 sandstorms in the Minqin region,we quantitatively analyzed the horizontal distribution and vertical variation in sandstorm characteristics under different land cover *** effect of different land cover on mitigating sandstorms was also *** results indicated that,in the surface layer ranging from 0-50 m,the intensity of sand-dust horizontal flux and concentration of sand-dust decreased with the increase of the height in the desert and the edge of oasis,whereas the two physical quantities increased slightly with the increase of the height in the *** two physical quantities obey power function well under all three cover ***,in the desert and at the edge of oasis,the sand-dust vertical deposition decreased with the increase of the *** a partial unimodal distribution at the oasis site and the maximum deposition occurred at the height of 9 m,which corresponds to the middle height of farmland protection *** annual flux that passed through a section of 1 m in width and 50 m in height was 9169 kg in the desert,5318 kg at the edge of oasis,and 2345 kg in the *** the annual fluxes at the edge of oasis and in the oasis are 42% and 74% less,respectively,than that in the *** implies that the wind break forest significantly reduced the intensity of sandstorms.