水土保持研究2024，Vol.31Issue(4)：67-74,85,9.DOI:10.13869/j.cnki.rswc.2024.04.030
不同土地利用类型对豫西黄土丘陵区坡面产流产沙的影响
Effects of Different Land Uses on Runoff and Sediment on Sloping Land in Loess Hilly Area of Western Henan
摘要
Abstract
[Objective]The aims of this study are to analyze the runoff and sediment under different land use types and slopes in the loess hilly area of western Henan,and to provide scientific basis for quantitative evaluation of soil erosion and comprehensive prevention of soil erosion.[Methods]Based on the observation data of 12 runoff plots from 2011 to 2020 at the monitoring site of soil and water conservation in Hugou small watershed,Songxian County,Henan Province,the pattern of runoff and sediment under different land use was revealed.Correlation analysis was used to detect the relationship between rainfall characteristics,slope,land use,runoff and sediment yield.[Results](1)Compared with bare land plot,grassland plot had the greatest effect on runoff and sediment reduction.The average annual runoff reduction effect of grassland was 78.6％～85.9％,and the maximum sediment reduction effect was 100％.The runoff reduction effect of forestland was 32.9％～51.3％,and the sediment reduction effect was 55.3％～78.9％.(2)Runoff and sediment in each runoff plot and the slope were closely related.There was no significant difference between the runoff and sediment on the slopes of 10° and 15°,however,it increased significantly on the slope of 25°.In addition,with the increase of slope gradient,the soil and water conservation effect of forestland and grassland also reduced.(3)The correlation between runoff depth and maximum 30-minute rainfall intensity(I30)and soil loss and rainfall erosivity were the most significant.[Conclusion]In areas where runoff and sediment localization observation is lacking in the loess hilly region of western Henan Province,rainfall process information can be used to estimate the runoff and soil loss under certain slope and vegetation conditions.关键词
产流产沙/径流小区/土地利用/豫西黄土丘陵区Key words
runoff and sediment yield/runoff plot/land use/loess hilly area of western Henan分类
农业科技引用本文复制引用
衣强,李越梅,闫俊飞,顾治家,张红峰,李泮营,黄淑萍..不同土地利用类型对豫西黄土丘陵区坡面产流产沙的影响[J].水土保持研究,2024,31(4):67-74,85,9.基金项目
信阳师范大学"南湖学者奖励计划"青年项目(2019046) （2019046）
信阳师范大学博士科研启动项目(19034) （19034）
国家自然科学基金(U2002209) （U2002209）
河南省自然科学基金(232300420444) （232300420444）
