Abstract
The Permanent Preservation Areas (PPAs) are considered essential for the maintenance of local biodiversity, so that your protection is regulated by the Brazilian legislation. This work had the objective of delimiting permanent preservation areas according to determinations of the current Brazilian environmental legislation, and identify the occurrence of conflict between the land use and legislation in Lavras county, MG, by combination of technologies of remote sensing and geographic information systems. The PPAs correspond to 42.33% of Lavras county's territory. The conflict between the land use and environmental legislation occurs in 63.48% of PPAs' territory, mainly corresponding to the pasture areas, bare soil and agriculture. The PPAs of tops of hills showed the highest conflicts with the legislation, with 48.48% of the territory occupied by pastures, and 13.62% by agriculture. The PPAs located in the surrounding of water courses and in the slopes with declivity higher than 45º presented 59.99% and 92.03%, respectively of the territory occupied by native vegetation of semi-deciduous forest and natural fields.
Highlights
The fast population growth associated with the fast agricultural and industrial expansion caused a severe ecosystem degradation in the whole planet, reflecting on the quality of life of the populations and stability of natural resources (REIS et al, 2009)
The permanent preservation areas are located in several strategic environmental viewpoints (REIS et al, 2009)
The image processing and analysis techniques coupled with a geographic information system provided accurate information about the dimensions, spatial distribution and use and occupation of land in the Permanent Preservation Areas (PPAs)
Summary
The fast population growth associated with the fast agricultural and industrial expansion caused a severe ecosystem degradation in the whole planet, reflecting on the quality of life of the populations and stability of natural resources (REIS et al, 2009). The necessity of governmental policies that ensure the agricultural production and preservation of the environment is essential to the maintenance of natural ecosystems. On this regard, the Brazilian Forestry Code, (BRASIL, 2012) set up as Permanent Preservation Areas (PPAs) those covered or not by native vegetation, with the environmental role of preserving the water resources, the landscape, the geological stability, the biodiversity, the gene flow of fauna and flora, protecting the soil and ensuring the well-being of human populations. In small and large rural properties, the PPAs of top
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