The use of vegetation indices for coarse resolution monitoring of terrestrial vegetation with SeaWiFS sensor 

作成者 Huete, A.R., Didan, K., van Leeuwen, W.J.D., Vermote, E.
日本十進分類法 (NDC) 450
内容 研究概要:In this study, the Sea-viewing Wide Field-of-View sensor (SeaWiFS) is used to prototype and analyze coarse resolution monitoring of the Earth's surface with vegetation indices. Histograms and transects of the normalized difference vegetation index (NDVI) and enhanced vegetation index (EVI) are analyzed over four continental regions as well as the entire global land surface. Unique distributions of NDVI and EVI values were displayed in the histograms. The EVI had a more normal distribution of values over the global set of biomes while the NDVI was skewed toward higher values approaching saturation over forested regions. The NDVI mimicked the skewed distributions found in the red band while the EVI resembled the normal distributions found in the NIR band. The EVI was also found to greatly minimize smoke contamination over extensive portions of the tropics. Smoke was found to degrade histogram peaks in the NDVI and red channel but had minimal effects in the NIR and EVI histograms. The results how that multiple indices are necessary for effective monitoring of the diverse set of global biomes with the EVI being particularly useful in high biomass, forested regions, while the NDVI being useful in semiarid regions.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
ファイル形式 application/pdf
掲載誌情報 Proceedings of the international symposium on global change in East Asia -vegetation monitoring page.10-25 (1998)
言語 英語

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