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The effects of a highway extending beyond the axis of the road, within regions with variable dimensions  depending on the variables tested, are called “road effect zones”. The limits can vary according to the  landscape and in areas where human occupation is more intense and, especially where settlements are  formed along the roads, there is an accelerated rhythmof environmental degradation through destructive  exploitation. Currently, only 35% of the Cerrado biome remain unchanged for the Brazilian remnants, and  the southwestern part of the biome mostly suffers from deforestation. During the ‘80s, in the State of Mato  Grosso do Sul, there was a high rate of colonization and as a result vast areas of native vegetation were  replaced by agricultural lands, such as cash crops and pasture. The objective of this study was to estimate  the evolution of deforestation in the cerrado within a road zone effect of 200 km on the highway BR-262,  between Campo Grande and Miranda (Mato Grosso do Sul State, Brazil). The effects were evaluated by using  temporal and spatial analysis with geotechnology techniques and remote sensing data. Our hypotheses were  that there is an evolution of deforestation since the 1980s, and that deforestation is more intense near the  highway. The study area comprises 9 km (divided in three different distances) for each side of the road. This  road begins in Brazil’s central highlands and extends into the Pantanal, an environmentally important area.  Based on satellite images from 1985 and 2001 we could estimate a 32.6% loss of cerrado along the highway.  In addition, we found that the road impacts the distribution of vegetation cover, with pasture growing near  the road, and forest cover growing further away. The roads are considered an accelerating factor to habitat  degradation.

THE INFLUENCE OF HIGHWAY BR262 ON THE LOSS OF CERRADO VEGETATION COVER IN SOUTHWESTERN BRAZIL