Análise da dinâmica da paisagem a partir da vegetação na bacia hidrográfica do arroio Candiota - RS

The analysis of the classes of use of the soil allows to accomplish the rational planning on the territory, in other words, to quantify the development of an area and still to trace protection measures and preservation. The dynamics landscape temporal reveals patterns and possible processes to do future projections of the natural atmospheres and anthropics. The present study seeks to analyze the dynamics of the vegetation in the landscape of stream Candiota/RS's basin hydrographic. This project will have as base the geotechnologies as the remote sensing and the geoprocessing. Three images of sensor TM/Landsat 5 of the Municipal district were use, whose dates will understand 24 years of possible use alterations and occupation of the soil. The use of that methodology is of extreme importance to understand and to monitor the changes in the environment. The vectorial cartographic base continuous of Rio Grande do Sul was used, in the scale 1:50.000. It can be concluded that along the time they happened significant changes in the landscape of the basin hydrographic of the stream Candiota, mainly with relationship to the forestation. The dynamics of the landscape is determined by phenomena anthropics that alter the expected natural patterns for the landscape. The expansion of the sylviculture, allied to the retraction of the ciliary forest it imposes a negative pressure on the effective ecological processes in this basin, committing the maintenance of the diversity of the biota in medium and long period.Pages: 7671-767