Geo-environmental characteristics of the Pardo River Watershed, Mato Grosso do Sul: knowledge bases for territorial planning purposes
DOI:
https://doi.org/10.5380/dma.v62i0.87262Keywords:
predatory agriculture, human impact, soil erosion, soil sanding, land-use changeAbstract
This study presents the results of the geo-environmental characterization of the Pardo River watershed, in the state of Mato Grosso do Sul, Brazil. The main objective was to evaluate the environmental conditions to generate data that can support territorial planning and ordering. The area was chosen due to the approval of the seven axes for the implementation of Small Hydroelectric Power Plants (SHPPs). The geospatial data used were obtained from the USGS, CPRM, IBGE and MapBiomas repositories. Lithology, climate, soils, geomorphology, geomorphometry (drainage network, watershed geometry, relief characteristics) and land use and cover were analyzed. ArcMap 10.8.2 was used. The results show an ecologically fragile environment that is highly susceptible to soil erosion and sandification. Agricultural activities carried out in the area, for the most part, do not consider agricultural suitability and restrictions, and are practiced in a predatory manner. Changes in land use and cover have impacted terrestrial (erosion, sandification, sedimentation) and aquatic ecosystems (degradation of water quality and quantity). The expansion of soy and eucalyptus cultures and the construction of SHPPs will put even more pressure on the watershed natural resources and generate socio-environmental conflicts.
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