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| 流域侵蚀控制度的概念与计算方法——以王茂沟流域为例 | |
| 引用本文： | 高海东,李占斌,李鹏,贾莲莲,宠国伟,徐国策.流域侵蚀控制度的概念与计算方法——以王茂沟流域为例[J].中国水土保持科学,2013,11(1):17-24. |
| 作者姓名： | 高海东 李占斌 李鹏 贾莲莲 宠国伟 徐国策 |
| 作者单位： | 1. 中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,712100,杨凌 2. 中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,712100,杨凌;西安理工大学,西北水资源与环境生态教育部重点实验室,710048,西安 3. 西安理工大学,西北水资源与环境生态教育部重点实验室,710048,西安 4. 水利部黄河水利委员会黄河上中游管理局,710021,西安 |
| 基金项目： | 国家重点基础研究发展计划(973计划)“黄河上游沙漠宽谷段风沙水沙过程及调控机理”(2011CB403302);国家自然科学基金“黄土区退耕生态系统植被根系行为特征与土壤水资源响应”(41271290) |
| 摘 要： | 文章将流域最小可能土壤侵蚀模数与实际土壤侵蚀模数的比值定义为流域侵蚀控制度，并以王茂沟流域为例说明计算方法。结果表明：王茂沟流域水土保持措施容量下的流域最小可能土壤侵蚀模数为2573t／（km^2·a）；使用王茂沟流域2004年土地利用图，计算得出王茂沟流域实际土壤侵蚀模数为7413t／（km^2·a），王茂沟流域侵蚀控制度为0．35，造成王茂沟流域2004年流域侵蚀控制度较低的原因是王茂沟流域还存在一定数量的坡耕地以及林地面积较少。建议将流域停饨榨制摩作为评价流域水土保持现状的指标。 |
| 关 键 词： | 水土保持 修正通用土壤流失方程 容许土壤流失量 流域侵蚀控制度 黄土高原 |
Concept and calculation methods of erosion control degree:A case study of the Wangmaogou Watershed |
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| Gao Haidong , Li Zhanbin , Li Peng , Jia Lianlian , Pang Guowei , Xu Guoce.Concept and calculation methods of erosion control degree:A case study of the Wangmaogou Watershed[J].Science of Soil and Water Conservation,2013,11(1):17-24. | |
| Authors: | Gao Haidong Li Zhanbin Li Peng Jia Lianlian Pang Guowei Xu Guoce |
| Institution: | 1(1.State Key Laboratory of Soil Erosion and Dryland Agriculture on Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,712100,Yangling,Shaanxi;2.Key Laboratory of Northwest Water Resources and Environment Ecology of Ministry of Education at Xi’an University of Technology,710048,Xi’an;3.Upper and Middle Yellow River Bureau,Yellow River Conservancy Commission of the Ministry of Water Resources,710021,Xi’an: China) |
| Abstract: | In this paper, the erosion control degree was defined as the ratio of the minimum possible soil erosion modulus and actual soil erosion modulus. The minimum possible soil erosion modulus was 2 573 t/（km^2. a） ） under soil and water conservation measures in Wangmaogou Watershed. Based on the land use map in 2004, the actual soil erosion modulus of Wangmaogou Watershed was 7 413 t/（km^2. a）. According to the definition of the erosion control degree, the erosion control degree of Wangmaogou Watershed was at a lower level of 0.35, due to existed sloping farmland and less forestry area. Therefore, we suggested that erosion control degree should be as the evaluation indicator for the status of soil and water conservation. |
| Keywords: | soil and water conservation revised universal soil loss equation soil loss tolerance erosion control degree Loess Plateau |
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