水土保持学报2017，Vol.31Issue(4)：32-37,6.DOI:10.13870/j.cnki.stbcxb.2017.04.006
基于RUSLE的北洛河上游流域侵蚀产沙模拟研究
Soil Erosion and Sediment Yield Assessment Based on RUSLE in Beiluo River on the Loess Plateau, China
摘要
Abstract
Under the background of the "Grain for Green" program to control severe soil loss from human activities,the soil erosion and sediment yield were estimated based on the sediment delivery distributed model (SEDD) and the revised universal soil loss equation (RUSLE) in the upper reaches of the Beiluo River on China's Loess Plateau.The model was used to simulated the spatial vatiations of soil erosion intensity and sediment yield in 1990,2000 and 2010.The results show that the average soil erosion modulus were 18 189.72 t/ (km2 · a),7 408.93 t/(km2 · a) and 2 857.76 t/(km2 · a),respectively,and the average annual sediment yield were 14 093.31 t/(km2 · a),5 997.65 t/(km2 · a) and 2 394.37 t/(km2 · a),respectively in 1990,2000 and 2010.Besides,the average soil erosion modulus gradually decreased with the increasing vegetation coverage.The results also showed that both the soil erosion modulus and sediment yield were the highest in the altitude of 1 475～1 575 m.The average soil erosion modulus gradually increased with the increasing slope gradient,and with 75％ of soil erosion was ascribed to the region with slope ＞15°.Moreover,the ranking of the average soil erosion modulus from high to low was:sunny slope＞half-sunny slope＞half-shady slope＞shady slope.This results provide an useful reference for the rational utilization of water and soil resources and offer a technical basis for using RUSLE to estimate the soil erosion on the Loess Plateau of China.关键词
土壤通用流失方程/泥沙输移分布模型/侵蚀产沙/地形分布/黄土高原Key words
RUSLE/SEDD/soil erosion and sediment yield/topography/Loess Plateau分类
农业科技引用本文复制引用
闫瑞,张晓萍,李够霞,陈浩..基于RUSLE的北洛河上游流域侵蚀产沙模拟研究[J].水土保持学报,2017,31(4):32-37,6.基金项目
国家自然科学基金项目(41230852,41440012,41101265) （41230852,41440012,41101265）
黄土高原土壤侵蚀与旱地农业国家重点实验室专项(A314021403-C2) （A314021403-C2）
