Estimating soil erosion response to land use/cover change in a catchment of the Loess Plateau, China

作     者：Rui Yan Xiaoping Zhang Shengjun Yan Hao Chen 

作者机构：State Key Laboratory of Soil Erosion and Dry land Farming on the Loess PlateauNorthwest A&F University Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingShaanxi 712100China 

出 版 物：《International Soil and Water Conservation Research》 (国际水土保持研究（英文）)

年 卷 期：2018年第6卷第1期

页      面：13-22页

核心收录：

学科分类：0710[理学-生物学] 1002[医学-临床医学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0815[工学-水利工程] 100214[医学-肿瘤学] 0901[农学-作物学] 0833[工学-城乡规划学] 10[医学] 0713[理学-生态学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：This study was supported by the National Natural Science Foundation of China(Grant nos.41230852,41440012 and 41101265) Special-Funds of Scientific Research Programs of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau(A314021403-C2). 

主　　题：Loess Plateau Land use changes RUSLE SEDD Soil erosion 

摘      要：The vegetation restoration project, named the Grain to Green Program, has been operating for more than ten years in the upper reaches of the Beiluo River basin, located in the Loess Plateau of China. It is significant to be able to estimate the success of preventing soil erosion. In this study, the Revised Universal Soil Loss Equation (RUSLE) and the Sediment Distributed Delivery (SEDD) model were used to assess the annual soil loss derived from water erosion. The results showed that the study area suffered from primary land use changes, with increasing grassland and forest and decreasing farmland from 1990 to 2010. Based on that, the average soil erosion modulus decreased from 18,189.72 t/(km2 a) in 1990– 7408.93 t/(km2 a) in 2000 and 2857.76 t/(km2 a) in 2010. Compared with 1990, the average soil erosion modulus decreased by 59.0% and 84.3% for 2000 and 2010, respectively. Benefiting from the increased vegetation coverage and improved ecological environment, the soil erosion in this study area clearly declined. This research also found that the distribution of the three years of soil erosion was similarly based on topographic factors. The soil erosion modulus varied with different land use types and decreased in the order of residential areafarmlandgrasslandforest. The average soil erosion modulus gradually increased with the increase of the slope gradient, and 76.08% of the total soil erosion was concentrated in the region with a gradient more than 15 degrees. The soil erosion modulus also varied with slope aspects in the order of sunny slopehalf-sunny slopehalf-shady slopeshady slope. This research provides useful reference for soil and water conservation and utilization in this area and offers a technical basis for using the RUSLE to estimate soil erosion in the Loess Plateau of China.