| 汶川地震重灾区土壤侵蚀敏感性评价 |
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| 引用本文： | 徐天献,王玉宽,傅斌.汶川地震重灾区土壤侵蚀敏感性评价[J].中国水土保持,2011(1):39-42. |
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| 作者姓名： | 徐天献 王玉宽 傅斌 |
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| 作者单位： | 1. 中科院/水利部,成都山地灾害与环境研究所,四川,成都,610041;中国科学院,研究生院,北京,100049
2. 中科院/水利部,成都山地灾害与环境研究所,四川,成都,610041 |
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| 基金项目： | 国家自然科学基金项目(40771123); 国家科技支撑计划子专题项目(2008BAD98B05) |
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| 摘 要： | 以通用土壤流失方程为基础,选择降雨侵蚀力、土壤可蚀性、地形起伏度、植被覆盖自然因子作为土壤侵蚀敏感性的评价指标,根据汶川地震重灾区自然环境特征,制定评价指标的分级标准,在GIS技术支持下生成单因子敏感性评价图,在此基础上基于ArcGIS的空间叠加分析功能,完成单因子的叠加运算,从而实现土壤侵蚀敏感性综合评价。结果表明:研究区土壤侵蚀敏感性以高度敏感和中度敏感为主,轻度敏感次之,不敏感和极敏感所占比例较小。空间上土壤侵蚀敏感性呈块状不连续分布,但侵蚀敏感性区域又相对集中,分布特征与地貌类型关系较大。针对不同的土壤侵蚀敏感等级,提出了相应的水土保持对策。
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| 关 键 词： | 土壤侵蚀 敏感性 评价 地震重灾区 汶川 |
Evaluation on Sensibility of Soil Erosion of Harder-Hit Area of Wenchuan Earthquake |
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| XU Tian-xian,WANG Yu-kuan,FU Bin.Evaluation on Sensibility of Soil Erosion of Harder-Hit Area of Wenchuan Earthquake[J].Soil and Water Conservation In China,2011(1):39-42. |
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| Authors: | XU Tian-xian WANG Yu-kuan FU Bin |
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| Institution: | XU Tian-xian1,2,WANG Yu-kuan1,FU Bin1(1.Institute of Mountain Hazards and Environment,CAS,Chengdu,Sichuan 610041,China,2.Graduate School,Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Selecting natural factors of eroding force of precipitation,soil erodibility,topography and vegetation coverage as the indexes for sensitivity evaluation of soil erosion,the paper prepares grading standards of evaluation indexes by using the Universal Soil Loss Equation(USLE),based on the characteristics of natural environment of the harder-hit area of Wenchuan earthquake.It produces single-factor map of sensitivity evaluation with the support of GIS,and completes overlapping calculation with single-factor ... |
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| Keywords: | soil erosion sensitivity evaluation harder-hit area of Wenchuan earthquake |
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