The sustainability of agroecosystems of the Distrito Federal (DF) has been threatened due to the increased development of agricultural activities. The objective of the present study was to evaluate the use and occupation of the Extrema watershed/DF, with the help of Remote Sensing and Geoprocessing. A satellite image from Landsat ETM +, acquired in 2010, was employed which was classified using the software ENVI 4.1, generating the map of land use and occupation of the watershed under study, which established classes of occupation calculated in the software ArcGIS 9.1. The intersection of land use and occupation and land suitability maps was performed using operations available in ArcGis 9.1, generating the use and occupation suitability map. The quantification of classes of use and occupation in relation to land use suitability was generated using cross-tabulation operations. Results show intensive farming at Extrema watershed, however, a significant predominance (80.07%) of appropriate agricultural land use was detected, according to the Brazilian System for Agricultural Land Suitability.
geographic information system; watershed; agricultural suitability; agriculture sustainability
