Anthropogeomorphic changes in the Lajeado watershed, Campo Grande - MS

Abstract

The urbanization in the Lajeado watershed was rapid and unplanned, which triggered and/or exacerbated socio-economic and environmental impacts. In order to generate technical-scientific information to support territorial and environmental planning, this study conducted an analysis of the terrain and land use and land cover in this watershed. The topographic attributes were derived from a 5-meter resolution Digital Elevation Model (DEM) using ArcMap and SAGA GIS software. The land use and land cover data for 1985 and 2021 were obtained from the MapBiomas Network. Radiometric vegetation indices were derived from Sentinel-2 imagery for the year 2021 using SNAP software. The obtained results show that urbanization has accelerated morphodynamic processes, leading to the creation of anthropogenic relief. Despite 50% of the watershed area being located within a Conservation Unit, which supplies 16% of the water to the city of Campo Grande, the area is highly degraded.

Keywords:
spatial transformation; urbanization; environmental degradation; anthropogenic relief