| 基于RS与GIS技术的泸定县植被空间分布分析 |
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| 引用本文： | 杨晏立,何政伟,管磊,张雪峰.基于RS与GIS技术的泸定县植被空间分布分析[J].测绘工程,2010,19(5):49-52,56. |
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| 作者姓名： | 杨晏立 何政伟 管磊 张雪峰 |
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| 作者单位： | 成都理工大学,地球科学学院,四川,成都,610059;成都理工大学,地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059;成都理工大学,地球科学学院,四川,成都,610059;成都理工大学,地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059;首都师范大学,资源环境与地理信息系统北京市重点实验室,北京,100037;成都理工大学,地球科学学院,四川,成都,610059 |
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| 基金项目： | 国家自然科学基金资助项目，四川省教育厅自然科学重点项目 |
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| 摘 要： | 以四川省泸定县为分析研究区域,综合运用遥感图像处理技术与GIS空间分析技术,用ETM+遥感影像获取归一化植被指数(NDVI)信息并反演植被覆盖度,用地形图等高线生成数字高程模型(DEM)并提取地形因子。借助叠合分析法,讨论植被覆盖度与海拔高度、坡度、坡度变率、坡向、坡向变率5种地形因子的空间关系,得到泸定县关于地形因子的各等级植被空间分布特征。分析对地植物学中高山峡谷地区植被的地形格局分布规律研究与生态环境的评价与改良都具有重要的参考价值。
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| 关 键 词： | 泸定县 植被覆盖度 地形因子 NDVI DEM 叠合分析 空间分布 |
Spatial distribution differentiation of vegetation in Luding County based on RS and GIS |
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| YANG Yan-li,HE Zheng-wei,GUAN Lei,ZHANG Xue-feng.Spatial distribution differentiation of vegetation in Luding County based on RS and GIS[J].Engineering of Surveying and Mapping,2010,19(5):49-52,56. |
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| Authors: | YANG Yan-li HE Zheng-wei GUAN Lei ZHANG Xue-feng |
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| Institution: | 1(1.College of Earth Science; Chengdu University of Technology; Chengdu 610059; China; 2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; 3.Beijing Municipal Key Laboratory for Resource Environment and Geo-Graphic Information System; Capital Normal University; Beijing 100037; China); |
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| Abstract: | Luding County,Sichuan Province is taken as a study area.The remote sensing image processing technology and the GIS spatial analysis techniques are applied comprehensively.The normalized difference vegetation index(NDVI) is obtained from the ETM+ images,and then convert into vegetation coverage.The topographic factors are extracted from the digital elevation model(DEM) which is generated by contour lines of topographic map.With the help of overlay analysis,the spatial relationships between vegetation coverag... |
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| Keywords: | Luding County vegetation coverage topographic factors NDVI DEM overlay analysis spatial distribution differentiation |
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