| Estimation of the spatial distribution of soil erosion in the hilly area of Sichuan, China | |
| Language | 英语 |
Jin, Xiaoli1,2; Cheng, Genwei1 ; Xu, C.-Y.3; Fan, Jihui1; Ma, Zelong2
| |
| 2012 | |
| Source Publication | Erosion and sediment yields in the changing environment (IAHS Publ. 356) |
| Author of Source | IAHS |
| Pages | 228-234 |
| meeting | IAHS international commission on continental erosion symposium |
| Conference Date | October 11, 2012 - October 15, 2012 |
| Conference Place | Chengdu |
| Country | China |
| Contribution Rank | 1 |
| Abstract | The hilly area of Sichuan (China) has suffered from soil erosion as a result of the intensive agriculture and steep topography. Many different methods have been used for the estimation of soil erosion and no clear consensus about erosion rates and subsequent sediment delivery ratios (SDR) has been reached. In this study, the Universal Soil Loss Equation (USLE) with different parameter estimation methods was applied to two river basins (i.e. Weichenghe (WCH) and Lizixi (LZX)) with the help of G1S techniques. The results were compared with those of previous studies based on remote sensing, erosion plots or the137Cs technique. The main results can be summarized as: (1) different rainfall erosivity estimation methods generate vastly different results; (2) using two-dimensional slope length produces higher soil erosion rate estimates and lower SDRs than the conventional approach in USLE; (3) the average annual soil erosion rates for WCH and LZX were estimated at 706 t km-2year-1and 3040 t km-2year-1, respectively, and the corresponding sediment delivery ratios at 0.27 and 0.38; and (4) the high erosion rates reflect the high altitude and intensive agricultural land use. Copyright © 2012 IAHS Press. |
| Keyword | USLE rainfall erosivity soil erosion rate spatial distribution |
| ISBN | 978-1-907161-33-9 |
| ISSN | 0144-7815 |
| Indexed By | EI |
| Accession number | Accession number:20133616706428 |
| Document Type | 会议论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/24079 |
| Collection | 山地表生过程与生态调控重点实验室 |
| Corresponding Author | Jin, Xiaoli |
| Affiliation | 1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China; 2.Sichuan Hydraulic Science Research Institute, Chengdu 610072, China; 3.Department of Geosciences, University of Oslo, Norway |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation GB/T 7714 | Jin, Xiaoli,Cheng, Genwei,Xu, C.-Y.,et al. Estimation of the spatial distribution of soil erosion in the hilly area of Sichuan, China[C]//IAHS,2012:228-234. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 228-.pdf（3886KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
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