| 基于知识库和空间信息耦合模型的北川县震后土壤侵蚀分析 |
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| 引用本文： | 曾红娟,杨胜天,高云飞,马海宽,郑东海,张宇.基于知识库和空间信息耦合模型的北川县震后土壤侵蚀分析[J].遥感学报,2008,12(6). |
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| 作者姓名： | 曾红娟 杨胜天 高云飞 马海宽 郑东海 张宇 |
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| 作者单位： | 1. 北京师范大学,地理学与遥感科学学院,遥感科学国家重点实验室,环境遥感与数字城市北京市重点实验室,北京,100875
2. 北京地拓科技发展有限责任公司,北京,100053 |
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| 基金项目： | 国家自然科学基金
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国家科技支撑计划
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| 摘 要： | 基于土壤水力侵蚀分级标准,考虑地震造成的特殊土壤侵蚀类型,构建了地震重灾区土壤侵蚀强度分级知识库;综合利用RS和GIS技术,结合专家知识判断,快速提取了四川省北川县土地利用、地面坡度、植被盖度、特殊侵蚀类型等土壤侵蚀因子空间信息;基于EcoHAT系统中的知识库和空间信息耦合型土壤侵蚀模型,快速完成了北川县震后土壤侵蚀强度的判定与分析.结果表明,地震使北川县土壤侵蚀加剧,相比2000年全国土壤侵蚀遥感调查成果,震后土壤侵蚀面积增加了275.13km2,增长量为23.83%;特殊侵蚀类型面积占北川县面积的2.48%;林地土壤侵蚀面积最大,占总侵蚀面积的一半以上;耕地土壤侵蚀比例为98.95%;坡度是北川县土壤侵蚀的主要贡献因子,植被则是主要控制因子,坡耕地治理是今后北川县土壤侵蚀控制的重点.
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| 关 键 词： | 北川县 土壤侵蚀 知识库 空间信息 耦合模型 EcoHAT系统 |
Soil Erosion Analysis of Beichuan County after Earthquake Based on Coupling Model of Repository and Spatial Information |
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| ZENG Hong-juan,YANG Sheng-tian,GAO Yun-fei,MA Hai-kuan,ZHENG Dong-hai and ZHANG Yu.Soil Erosion Analysis of Beichuan County after Earthquake Based on Coupling Model of Repository and Spatial Information[J].Journal of Remote Sensing,2008,12(6). |
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| Authors: | ZENG Hong-juan YANG Sheng-tian GAO Yun-fei MA Hai-kuan ZHENG Dong-hai and ZHANG Yu |
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| Institution: | School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science,
Beijing Key Laboratory of Environmental Remote Sensing and Digital City,Beijing 100875,China;School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science,
Beijing Key Laboratory of Environmental Remote Sensing and Digital City,Beijing 100875,China;School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science,
Beijing Key Laboratory of Environmental Remote Sensing and Digital City,Beijing 100875,China;Beijing Datum Science and Technology Development Co.,Ltd,Beijing 100053,China;School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science,
Beijing Key Laboratory of Environmental Remote Sensing and Digital City,Beijing 100875,China;School of Geography, Beijing Normal University, State Key Laboratory of Remote Sensing Science,
Beijing Key Laboratory of Environmental Remote Sensing and Digital City,Beijing 100875,China |
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| Abstract: | |
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| Keywords: | Beichuan county soil erosion repository spatial information couplingmode l EcoHAT |
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