水土保持学报2011，Vol.25Issue(3)：40-43,4.
不同降雨强度下地面坡度对红壤坡面土壤侵蚀过程的影响
Effect of Slope Gradients on Erosion from a Red Soil Hillslope under Different Rainfall Intensity
摘要
Abstract
The simulated rainfall experiment was used to quantify the effects of slope gradients on runoff and soil erosion processes on red earth hillslopes under different rainfall intensity conditions. The results showed that the initial slope red soil runoff rates increased the time in advance with the slope, but weren't obvious, start time of slope runoff was mainly affected by rainfall intensity control sooner or later; slope runoff increased with rainfall intensity increases, with slope gradient was more complex, in the rain intensity of 50 mm/h, the runoff with slope decreased with increased in rainfall intensity for the 75 mm/h, the increase in runoff with slope then decreased;Under different rainfall erosion of the slope of the rainfall rates were in the initial sharp rise, followed by the index fell to form a lean to the left of the curve. Slope of the impact of slope erosion increased with rainfall intensity increased; The amount of red soil erosion increased with rainfall intensity increased significantly,with the slope of the increase in the 50 mm/h rain intensity at first increased and then decreased when the trend, there was a critical near the 20° slope; at 75 mm/h rain intensity, erosion increased with slope.关键词
红壤坡面/坡度/降雨强度/产流过程/侵蚀过程/模拟降雨Key words
red earth hillslopes/ slope gradient/ rainfall intensity/ runoff process/ erosion process/ simulated rainfall分类
农业科技引用本文复制引用
张会茹,郑粉莉..不同降雨强度下地面坡度对红壤坡面土壤侵蚀过程的影响[J].水土保持学报,2011,25(3):40-43,4.基金项目
国家重点基础研究发展计划项目"不同类型区土壤侵蚀过程及其机理"(2007CB407201) （2007CB407201）
西北农林科技大学创新团队计划项目"土壤侵蚀及其治理环境效应评价"(01140202) （01140202）
