An index of vegetation water content invasion by Landsat 5, in semi-arid area: The Tarim River Basin

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	An index of vegetation water content invasion by Landsat 5, in semi-arid area: The Tarim River Basin
	Chang ; Cun1 ; Chen ; Xi2 ; Bao ; Anming2 ; Ma ; Zhongguo1 ; Wang ; Jinlin1
	2009
会议名称	2009 International Conference on Environmental Science and Information Application Technology, ESIAT
会议日期	2009
会议地点	Wuhan, China
关键词	Arid regions - Environmental engineering - Sensitivity analysis - Solvent extraction - Water analysis - Water content - Watersheds - Arid area - Equivalent water thickness - EWT - Global sensitivity analysis - Infrared indices - LANDSAT TM - Landsat-5 - NDII - NIR regions - Normalized differences - Operational methods - PROSPECT model - Regression equation - Semiarid area - Spectral indices - Tarim River basin - Vegetation water content - Water cycle
页码	438-442
中文摘要	Estimation of vegetation water content is central to the understanding of water cycle processes. The information of vegetation water content presents the healthy condition of the plant. Various methods were used to extract vegetation water content in semiarid area, however, Spectral indices were still widely used. In this paper, a global sensitivity analysis (GSA) using PROSPECT model was used to understand and quantify vegetation water content effectsed on the signal measured at leaf level.The NIR region was therefore required in combination with SWIR to retrieve equivalent water thickness (EWT). An index EWTsparsecanopy was created to provide an operational method for quantitatively retrieving vegetation water content at satellite scale in a rapid and reliable fashion for sparsely vegetated arid area based in tarim river basin,. Compared with EWTcanopy,the former one had a better relationship to normalized difference infrared index(NDII), With the R ² =0.553. Finally, the regression equation(Y=0.05552 +0.53512*NDII) was used to estimate EWT sparsecanopy from the Landsat TM imagery. © 2009 IEEE. (15 refs.)
收录类别	EI
会议录	Proceedings - 2009 International Conference on Environmental Science and Information Application Technology, ESIAT 2009
ISBN号	13: 9780769536828
内容类型	会议论文
源URL	[http://ir.xjlas.org/handle/365004/10802]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Chang,Cun1,Chen,et al. An index of vegetation water content invasion by Landsat 5, in semi-arid area: The Tarim River Basin[C]. 见:2009 International Conference on Environmental Science and Information Application Technology, ESIAT. Wuhan, China. 2009.