科尔沁东部沙地土壤可风蚀性研究  

Study on wind erodibility in soil under eastern Horqin sandy land

作　　者：马玉凤[1] 介冬梅[2] 严平[1] 王耿锐[1] 宋阳[1] 

机构地区：[1]北京师范大学资源学院,北京100875 [2]东北师范大学城市与环境科学学院,长春130024

出　　处：《世界地质》2007年第3期338-344,共7页World Geology

基　　金：新世纪人才支持计划;国家自然科学基金(40201052)资助

摘　　要：使用筛析法和SA—CP3粒度分析仪对科尔沁东部沙的耕地、沙岗地和裸地7个表土样品进行分析测试。结果表明：①研究区表土粒度组成以细砂和中砂为主（50%-70％），土壤可风蚀性较高；②不同土地利用类型中，耕地土壤可风蚀性程度大于沙岗地和裸地；③同一流域不同位置的土壤可风蚀性程度，西辽河东岸大于西岸；④对大气的粉尘贡献率，耕地远大于沙岗地和裸地。By using soil sieve and SA- CP3 separator-size analyser, the authors analyzed seven surface soil samples, which were collected in three different land-use types including farmland, sand hill and bare ground in eastern Horqin. The results show that： （1） grain-size compositions of surface soil are dominated by medium sand and fine sand （50% -70% ）, with higher wind erodibility; （2） for different land-use types, the wind erodibility for farmland is higher than that for sand hill and bare ground; （3） for different positions of the same catchment, the wind erodibility at the east bank of Xiliao River is higher than that of the west bank; （4）the dust contributing ratio for farmland to atmosphere predominates by far over that of sand hill and bare ground.

关 键 词：科尔沁东部 沙地土壤 可风蚀性 

分 类 号：S157.1[农业科学—土壤学]