Change analyses of forest health condition development in Ziar nad Hronom region influenced by aluminium plant
2002
Bucha, T. | Mankovska, B. (Forest Research Institute, Zvolen (Slovak Republic))
Forest health condition was evaluated on 111 terrestrial permanent monitoring plots. Image classification for the whole region was done by using regression equation between data from the terrestrial survey and digital value of original and derived synthetic bands of Landsat TM. It was found that synthetic channels give better result than original bands. The change analysis was carried out by the method of image diffferences in image pairs. Output images were standardized and than reclassified into 6 classes. It was found that difference of vegetation indexes between two years gives better result than simple difference between two independent classified images of forest condition
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