Using the land change modeler tool from idrisi /taiga to analyze lan use gains and losses from the Assis (SP) ecological station dam zone

Abstract

Over time, several types of appropriate management were created for each Conservation Unit (Ucs), among them, the Damping Zone (ZA) appears with the role of filtering the negative impacts of the activities that occur around it. Thus, the objective of this study was to analyze the land use modifications in the ZA of the Assis Ecological Station - SP, in the years 2000 and 2017. Images of the Landsat 5/TM and Landsat 8/OLI satellites were used to perform the study. The images were processed in GIS environment and generated the mapping of losses and gains using the Land Change Modeler module of the Idrisi-Taiga software, which is very important for environmental studies. It was possible to observe, initially, the gradual reduction of the pasture and the increase of the temporary crops in the north and east of the area in these seventeen years analyzed, obtained an area gain of 12.29%. It is noteworthy that the surroundings are completely taken up by tempory culture and forestry, that affect the conservation can generate the loss of biodiversity in this place, and therefore the knowledge of the analyzed parameters allows the use of appropriate techniques for effective preservation. Therefore, the use of orbital data can contribute to the monitoring of Ucs avoiding environmental degradation.