模拟降雨侵蚀产沙量与其影响因子的灰关联分析  

GCA Between Sediment Yield and Its Impact Factors Under Simulated Rainfall Conditions

作　　者：管新建[1] 张文鸽[2] 李勉[2] 申震洲[2] 

机构地区：[1]郑州大学水利与环境学院,河南郑州450002 [2]黄河水利科学研究院,河南郑州450003

出　　处：《水土保持通报》2011年第2期168-171,共4页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目"流域水文过程对极端气候事件敏感性研究"(51079131)

摘　　要：在20°和25°坡度上,选用4种雨强条件进行人工模拟降雨实验,对土壤水蚀动力过程进行了系统模拟,并运用灰色关联度的分析方法,研究了坡面侵蚀产沙量与其影响因子之间的关联程度。研究结果表明,在实验条件下,雨强与坡面降雨径流产沙量的关联度最大,水流功率次之,可以用雨强和水流功率来描述坡面径流产沙量,并建立了坡面径流产沙量与雨强和水流功率的相关关系式。The hydrodynamic process of soil water erosion was systemically simulated in the study by artificial precipitation experiments with treatments of two slopes（20° and 25°） and four rainfall intensities.The relationship between sediment yield and its impact factors was also studied using gray correlation analysis.The results show that rainfall intensity had the highest correlation coefficient with surface erosion sediment yield.Stream power was the factor with the second highest coefficient.Surface erosion sediment yield was therefore described by rainfall intensity and stream power with established regression equation.

关 键 词：模拟降雨 影响因子 灰色关联 

分 类 号：S157[农业科学—土壤学]