Dinâmica histórica do uso da terra no bioma cerrado: implicações ambientais na sub-bacia do rio Caiapó (GO)

Abstract

The occupation of the cerrado biome was influenced by tax incentives from governmental development plans, which were aimed at expanding agricultural activities that gave the cerrado economic prominence, but also resulted in environmental impacts.This paper aimsto evaluate the historical dynamics environmental implications of landscape occupation in the Caiapó River sub-basin, located in the central portion on Goiás State. This area is part of the core area of the biome and was the target of an intense process of conversion and occupation stimulated by public policies of the 1970s. Under a geoecological approach based on integrated analysis, the methodological procedures involved the supervised classification based on LANDSAT images with a time frame between 1985 at 2016; analysis of the occupation dynamics with indexes describing the landscape structure and susceptibility evaluation to erosive processes.The results indicate that in the study approachthe vegetation cover is quite fragmented with a growing increase in agricultural activity, especially in areas considered very susceptible to laminar erosion for both vegetation fragments and for "agrosilvopastoral" activities.