Abstract
The present paper aimed to map the priority areas for environmental recovery of Rio Pomba city, Minas Gerais, as part of the creation of a strategic plan for environmental actions. In order to carry out the proposed approaches, the information layers (IL) geology, climate, land use, pedology and geomorphology of study area were mapped individually and transformed, by multicriteria analysis, in a single database using the geographic information system (GIS), resulting in the mapping of natural vulnerability to soil loss. The results showed that areas vulnerable to erosion processes, and priority to environmental restoration actions, were concentrated in declivity regions of study area, while regions classified as stable accumulated in permanent preservation areas (PPA) marginal to water resources. These results diverged from the field observations and the addition of an IL that demarcates the PPAs in multicriteria analysis was proposed as alternative. The new results were satisfactory, closer to the field inspections and this new methodology can be used in management of environmental restoration actions of city, in which should begin with the marginal PPAs and in the northern region.
Highlights
O presente tra ba lhou buscou ma pear a s á rea s prioritá ria s à recupera çã o a mbiental do município de Rio Pomba, Minas
All study area is on gneiss rocks of magmatic and/or sedimentary origin (Pinto e Silva, 2014), which gives to the information layers (IL) a vulnerability index to denudation of rocks equal to 1.30 (Crepani et al, 2001)
The information of climate and geology of city was not presented in this document due the homogeneity of these parameters, only the IL geomorphology, pedology and land use were illustrated in Figure 1, 2 and 3 with the main overlapping water resources
Summary
O presente tra ba lhou buscou ma pear a s á rea s prioritá ria s à recupera çã o a mbiental do município de Rio Pomba , Minas. Como parte da criação de um plano diretor para ações ambientais. Para o cumprimento das abordagens propostas, os planos de informação (PI) geologia, clima, uso da terra, pedologia e geomorfologia do município foram levantados individualmente e reunidos, via análise multicritério, em uma única base de dados utilizando o sistema de informação geográfica (SIG), resultando no mapeamento da vulnerabilidade natural à perda de solo. Esses resultados divergiram das observações de campo e a adição de um PI que demarque as APP’s na análise multicritério foi proposta como alternativa. Os novos resultados foram satisfatórios, mais próximos das inspeções de campo e essa nova metodologia pode ser utilizada no gerenciamento das ações de restauração ambiental da cidade, que devem iniciar pelas APP’s ciliares e na região norte. Biodiversity and limit the availability of natural resources (Borges et al, 2016; Jorge et al, 2017; Vieira et al, 2017)
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