科尔沁沙地地表沉积物粒度分析与可风蚀性讨论  

Grain Size Distribution and Wind Erosion Possibilities of Surface Sediments in Horqin Sandland

作　　者：曹振[1] 胡克[1] 张永光[2] 介冬梅[1] 赵亮[1] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]北京师范大学资源与环境学院,北京100083

出　　处：《中国沙漠》2005年第1期15-19,共5页Journal of Desert Research

基　　金：国家"973"重点基础研究发展规划项目(G2000048703)资助

摘　　要：通过对地表沉积物的粒度分析,研究了科尔沁沙地四种主要土地类型地表沉积物的粒度分布特征;结合该地区多年气候状况,对不同土地类型的可风蚀性进行了定量研究;分析了不同土地类型的潜在可风蚀性。同时,对玉米地、谷子地等七种农作物种植地的表土做了粒度分析,认为不同农作物对地表可风蚀性的影响较小。After analyzing the grain size of surface sediments in Horqin Sandland, the paper has discussed the distribution characteristics of grain size parameters of four different land types in this sandland. Based on these analyzing results the paper has also quantitatively analyzed the wind erosion possibilities of the different land types, concerning the recent climate records in the studied area. The results on the wind erosion potentials of the surface sediments showed that the farmland is of the greatest potential providing dust for the regional dust-storms. Furthermore, it is believed that there is not much differences in the possibilities of wind erosion among the 7 kinds of farming lands.

关 键 词：风蚀 科尔沁沙地 土地类型 玉米地 谷子 农作物 地表 沉积物粒度 粒度分析 表土 

分 类 号：P512.2[天文地球—地质学] S157[农业科学—土壤学]