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遥感技术与应用  2009, Vol. 24 Issue (4): 496-501    DOI: 10.11873/j.issn.1004-0323.2009.4.496
综述     
地形复杂区域的典型植被指数评估
姚晨,黄微,李先华
上海大学遥感与空间信息研究中心,上海200072
Evaluation of Topographical Influence on Vegetation Indices of Rugged Terrain
YAO Chen,HUANG Wei,LI Xian-hua
Reseach Center of Remote Sensing and Spatial Information Science,Shanghai University,Shanghai 200072,China
 全文: PDF(3528 KB)  
摘要:

植被多分布在复杂地形,不规则的地形会造成遥感影像中同种或相似地物呈现不同的反射率/辐射值,也会使得不同种地物呈现相似的反射率/辐射值,这种反射率的变化会给植被的生物、物理量评估带来误差,所以对地形复杂区域的典型植被指数的评估是十分必要的。选用Landsat卫星影像对复杂地形条件下典型植被指数进行了评估。经过详细的分析,植被指数对由地形引起的红光波段反射率变化敏感,导致它们对地形的变化敏感,所以植被指数受地形的影响总体上是不容忽视的。

关键词: 植被指数复杂地形波段反射率    
Abstract:

Most vegetation distributes in rugged terrain and for the terrain is so complex,the same or similar vegetations show various reflectivities in remotely sensed imagery or the different vegetations have the similar reflectivites,which will lead the error on the vegetation index(VI) evaluation and also will reduce the precision of the vegetation biomass evaluation.In this paper,Landsat ETM+ imagery is adopted to evaluate the topographical influences on VI in complex terrain.The detailed analysis indicates that VI is sensitive to the variation of red-reflectivity which is strongly influenced by topography.Therefore,topographical influences on VI should not be neglected.

Key words: Vgetation Index    Rugged terrain    Reflectivity
收稿日期: 2009-01-08 出版日期: 2010-11-29
基金资助:

国家自然科学基金项目(40771145);高等学校博士点基金项目(20070280011);科技部气象行业公益专项基金(GYHY20070628);国土资源部项目(KD081902-03)子课题。
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作者简介: 姚晨(1985- ),女,硕士研究生,主要从事典型植被指数评估研究。E-mail:yaochen666@shu.edu.cn。
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引用本文:

姚晨,黄微,李先华. 地形复杂区域的典型植被指数评估[J]. 遥感技术与应用, 2009, 24(4): 496-501.

YAO Chen,HUANG Wei,LI Xian-hua. Evaluation of Topographical Influence on Vegetation Indices of Rugged Terrain. Remote Sensing Technology and Application, 2009, 24(4): 496-501.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2009.4.496        http://www.rsta.ac.cn/CN/Y2009/V24/I4/496

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