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.
出处
《水土保持通报》
CSCD
北大核心
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)
关键词
模拟降雨
影响因子
灰色关联
artificial precipitation
impacting factors
gray correlation analysis（GCA）
