作者
Ludy Bohórquez, Ivonne Gómez, Fernando Santa
发表日期
2011
期刊
Procedia Environmental Sciences
卷号
7
页码范围
389-394
简介
We evaluated the effectiveness of statistical operators Moran's I, Geary's C and Getis and Ord Gi in Landsat ETM satellite images to measure and analyze the spatial dependence of the spectral characteristics of the affected areas, comparing these results with those obtained in the use of spectral indices for discrimination of burned areas. The study was carried out using a multitemporal analysis (before and after the fire) in some areas located in the Tuparro National Park in the department of Vichada, in the northeastern part of the Orinoco region in Colombia, which were affected by the presence of this phenomenon. To perform the analysis used tools provided by the software R version 2.11.1, packages spdep and rgdal for handling raster data and calculation of spatial autocorrelation tests. The use of statistical operators provide better results with the band of near infrared (NIR) and allow better identification of …
引用总数
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