Análisis of werland vegetation “Mallin” located in a semiarid area of Neuquén province (Argentina)
Abstract
Vegetation and soil are analyzed in a wetland “mallín” through the use of remote sensing techniques in a Landsat TM image and field trips. For digital image processing were used vege- tation indices based on distance and slope. The results show that the classes confined to wetter areas and greater prairie vegetation, the correlation between the two types of index is high and can be used interchangeably. In the case that the proportion of bare ground increases, the corre- lation decreases and the best rates to be applied are those based on distance. Such is the case of PVI, PVI1, WDVI. The results of the vegetation samples made in the field trips showed high degradation of the place as a result of overgrazing pursued for over a century in this ecosystem.
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