DIAGNÓSTICO AMBIENTAL DAS PAISAGENS DA BACIA HIDROGRÁFICA DO CÓRREGO BEBEDOURO/MS

Abstract

The main objective of this research is to develop an environmental diagnosis of the landscapes of the watershed of the Bebedouro stream - BHCB, located in the Paraná river basin, in the state of Mato Grosso do Sul, between the municipalities of Três Lagoas and Selvíria, with about 202,26 km². In the basin is installed, in its lower course, close to its mouth on the Paraná River, one of the largest cellulose industries in the world, Eldorado Brasil. To develop the environmental diagnosis was necessary to elaborate the mapping, identification, and evaluation of the biophysical conditions and land use and land cover of the basin's landscape. The main environmental impacts were identified, using the Leopold matrix, as well as the environmental conflicts, determining the degradation index by the Kan coefficient. An evaluation of the physical and chemical quality of its surface waters was also carried out, using data obtained in 2019 and 2020. The results of this research pointed the existence of three large landscape units in the basin (deposition, transport and dissection), the greatest impacts are presented in the transport unit, either due to negative characteristics, such as importance, coverage, duration and irreversibility. The biggest areas of conflict are found in pasture areas, that advanced over the PPA, in the deposition and transport landscape units. It was also analyzed that in the deposition landscape unit the elements that received high environmental fragility classification were concentrated where occurred the flooding processes in the BHCB.