| 基于RS和GIS的班戈县植被覆盖度动态变化分析 |
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| 引用本文： | 陈涛,徐瑶.基于RS和GIS的班戈县植被覆盖度动态变化分析[J].物探化探计算技术,2011,33(6):669-672,576. |
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| 作者姓名： | 陈涛 徐瑶 |
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| 作者单位： | 成都理工大学信息科学学院,成都610059;西华师范大学 国土资源学院,南充637002 |
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| 基金项目： | 西藏重大农业生态环境问题防护技术研究 |
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| 摘 要： | 运用RS和GIS技术,选取了1990年、2000年、2009年三期遥感影像,采用基于归一化植被指数（NDVI）的像元二分模型,计算了这三个时期的植被覆盖度,并对班戈县1990～2009年间植被覆盖度的变化情况进行了定量分析。结果表明,班戈县的植被退化面积,从1990年31.80×104 hm2减少到2009年156.28×104 hm2,植被覆盖面积减少了77.89×104 hm2。从动态变化看,1990年到2000年草地退化较严重,2000年到2009年,草地退化程度增加趋势不明显。
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| 关 键 词： | 班戈县 植被指数 植被覆盖 植被退化 |
STUDY ON VEGETATION COVERAGE AND THE DYNAMIC CHANGE IN BANGE COUNTY BY REMOTE SENSING METHOD |
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| CHEN Tao,XU Yao,..STUDY ON VEGETATION COVERAGE AND THE DYNAMIC CHANGE IN BANGE COUNTY BY REMOTE SENSING METHOD[J].Computing Techniques For Geophysical and Geochemical Exploration,2011,33(6):669-672,576. |
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| Authors: | CHEN Tao XU Yao |
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| Institution: | CHEN Tao1,2,XU Yao1,2(1.College of Information Engineering,Chengdu University of Technology,Chengdu 610059,China,2.Land and Resources College,China West Normal University,Nanchong 637002,China). |
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| Abstract: | On the basis of RS and GIS techniques,remote sensing images of three periods(1990,2000,and 2009) were used to analyze the changeable characteristics of vegetation coverage in Bange county.The vegetation coverage was calculated based on two components sub-pixel mode.The vegetation coverage and its changes between 1990 and 2009 were also analyzed quantificationally.The result showed that the vegetation coverage decreased from 318 000 km in 1990 to 1 562 800 km2 in 2009,and the 778 900 km2 vegetation lost in t... |
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| Keywords: | bange county NDVI vegetation coverage vegetation degeneration |
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