防沙工程的结皮效应研究  

Research on Effect of Sand Prevention and Control Engineering on Formation of Physical Crust

作　　者：方海燕[1] 屈建军[1] 俎瑞平[1] 张克存[1] 李秋艳[1] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所

出　　处：《水土保持学报》2005年第2期17-20,共4页Journal of Soil and Water Conservation

基　　金：中国科学院资源与环境领域知识创新工程重大项目 (KZCX2 - 30 4 ) ;国家自然科学基金项目 (49971 0 1 ) ;国家基础研究规划(973)项目 (1 9990 30 5)

摘　　要：对土壤物理结皮形成的研究,大都集中在降雨和流水对物理结皮形成的作用,而忽视了风力尤其是在流沙区风力及其大气降尘对结皮的形成和促进作用。通过在流沙表面不同的地貌部位设置不同规格的草方格沙障,来研究沙面结皮形成时的情况,并就障内表层沙样的粒度分布和流沙的粒度分布作了对比。同时就流沙区丰富的大气降尘对结皮形成的物质来源和促进作用进行了分析;Most of the researches on physical dust formation centralized in the rainfall and flowing water's action before, and ignored the positive formation and acceleration action of wind power on it especially in the flown sand region. This paper analyzes the formational action of physical by wind power through constructing straw checkboard of different sizes in different morphological locations, at the same time analyzes the grain sizes in the straw checkboard and compares them with the counterparts in the flown sand region. Besides this paper also explains another mass source and acceleration action of physical crust of abundant atmospheric dustfall, and also does not overlook the important attribution of rainfall to the formation of physical crust in the flown sand region.

关 键 词：结皮 效应研究 防沙工程 大气降尘 粒度分布 土壤物理 地貌部位 物质来源 流沙固定 草方格 内表层 风力 沙区 降雨 沙障 

分 类 号：S288[农业科学—农业水土工程] TQ172.622[农业科学—农业工程]