安徽农业科学2012，Vol.40Issue(17)：9311-9313,3.
模拟降雨条件下坡度对石灰岩坡面土壤侵蚀的影响
Impacts of Slope on Limestone Soil Erosion under Simulated Rainfall
摘要
Abstract
[Objective] The research aimed to reveal the impacts of solpe on runoff on the surface of limestone. [ Method] By indoor rainfall simulation experiment, the impacts of the slope of the limestone on overland flow and erosion were studied. [ Result ] At 5° - 25°range, limestone runoff volume and dynamic runoff increased with the increase of the slope,and the critical slope was close to or greater than 25°. Runoff sediment concentration also increased with the increase of the slope. Under the same slope,silt content in the initial of runoff reached a peak value rapidly, and the runoff declined until the steady in the next 20 minutes. Runoff coefficient,runoff increased with the increase of the limestone slope gradient, which showed a good linear relationship. [ Conclusion] The research could provide a theoretical basis for the establishment of limestone soil e-rosion prediction model and the realization of the integrated management of limestone area.关键词
石灰岩/坡度/产流过程/模拟降雨Key words
Limestone/Gradient/Runoff process/Simulated rainfall分类
农业科技引用本文复制引用
郭学尧,代肖,周大迈..模拟降雨条件下坡度对石灰岩坡面土壤侵蚀的影响[J].安徽农业科学,2012,40(17):9311-9313,3.基金项目
生态修复工程设计平台建设(2008001). （2008001）
