Mapeamento de feições erosivas lineares em Três Ranchos (GO)

Abstract

The information coming from the study of environmental geomorphology allows the analysis of environmental problems and the understanding of the processes that occur on the Earth's surface. This type of research is relevant in order to understand the factors inherent to the erosive processes, considered as a major environmental problem in the city of Três Ranchos, GO, especially close to the hydroelectric plant of the Emborcação. The aim of this study is to map the linear erosions, and to understand the relationship between the use of the soil and the conditions that favor environmental degradation. The analysis of the results showed that the methodology allowed the identification of the erosive processes in the urban perimeter. It’s areas around the reservoir. Eight gullies and nine ravines were identified, with the presence of furrows, which need stabilization measures. It was possible to verify, from the results of the mapping, that the distribution of erosions is associated with natural and anthropic conditions generated over time. The variation of the water level of the reservoir and the problems associated to the occupation of the ground near the lake, due to the real estate trade, were the main factors of the urban perimeter. In view of the results found, it is concluded that measures are needed for local sustainable development, such as the elaboration of Degraded Area Recovery Plans (PRAD) to stabilize existing erosion features, as well as the