| 基于DEM的东江源区土壤侵蚀研究 |
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| 引用本文： | 徐昌荣,卢艳敏,周学林.基于DEM的东江源区土壤侵蚀研究[J].湖北农业科学,2011(20):4170-4173. |
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| 作者姓名： | 徐昌荣 卢艳敏 周学林 |
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| 作者单位： | 江西理工大学建筑与测绘工程学院; |
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| 基金项目： | 江西省科技支撑计划项目(2007BN18800,2007BG18001) |
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| 摘 要： | 采用RS与GIS技术,研究东江源区2000年的土壤侵蚀状况。利用研究区地形图制作的数字高程模型(DEM),派生出坡度、坡向图。借助于分布指数,通过空间叠加分析,从高程、坡度和坡向3个方面对研究区的土壤侵蚀进行了定量分析,揭示土壤侵蚀在这3个方面上的分布特征。结果表明,土壤侵蚀是自然因子和人为因子综合作用的结果,自然因素是土壤侵蚀发生、发展的潜在条件,而人类活动是土壤侵蚀发生、发展或减弱的主导因素。因此,转变不合理的土地利用方式,加强植被的保育和重建是防治土壤侵蚀的关键环节。
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| 关 键 词： | GIS 分布指数 土壤侵蚀 东江源区 |
DEM-based study of Soil Erosion in Dongjiangyuan Region |
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| XU Chang-rong,LU Yan-min,ZHOU Xue-lin.DEM-based study of Soil Erosion in Dongjiangyuan Region[J].Hubei Agricultural Sciences,2011(20):4170-4173. |
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| Authors: | XU Chang-rong LU Yan-min ZHOU Xue-lin |
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| Institution: | XU Chang-rong,LU Yan-min,ZHOU Xue-lin(Faculty of Architectural and Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China) |
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| Abstract: | By the technique of RS and GIS,the soil erosion of Dongjiangyuan in 2000 was studied.Digital elevation mode(DEM) was firstly made based on the relief map of the researched area,and the slope and aspect map were computed from the DEM.The terrain factors(elevation,slope and aspect) and distribution index were overlapped to analyze the soil erosion.The results showed that the soil erosion was the result of synthetic action of the natural factors and human factors.Natural factors were the potential condition of... |
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| Keywords: | GIS distribution index soil erosion Dongjiangyuan |
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