Delimitação de áreas de preservação permanente determinadas pelo relevo: aplicação da legislação ambiental em duas microbacias hidrográficas no estado de Goiás

Resumo

The conservation of the areas of permanent preservation suffers mainly due to ignorance. Law enforcement is not easy because of the vagueness of its space limits. This paper discusses the interpretation and application of the legislation, in determining of Areas of permanent preservation related to relief. The purpose was to indicate all the categories set in two watersheds, João Leite river and Extrema river, looking for the result for the real area of permanent preservation and the conflicts arising from its use. By doing this it has been mapped eight categories of permanent preservation, in the two watersheds: marginal bands of 30 meters and 50 meters in rivers; marginal bands in lakes and reservoirs; marginal radius of 50 meters on springs; retreat of 100 meters at the edges of plates; Hill Tops; divide lines and escarpments. In this text it was also prepared maps of the surface use in the two watersheds, to correlate with the areas of permanent preservation. In the Basin of João Leite River, only 22.23% are covered by remnants of vegetation in which the predominance is pastures, that covers 65% of the area. In the Extrema River, 43.62% are covered by remnants, which have also predominance of pastures, covering 48.34%. For the areas of permanent preservation, in João Leite River, the total was the amount of 18.25% of its area. In the Extrema River, 26.82% are covered by areas of permanent preservation, and the classes of hill tops are predominant in both. Clearly there is a discrepancy between the patterns of use and occupation, in Joao Leite River, 62.07% of all the areas of permanent preservation are under use, and in the Extrema River this scenario is quite different with 78.2% of preservation in areas of permanent preservation. Among the most respected categories, the situation is the same, the geomorphological areas of permanent preservation, mainly by the slope, are the most preserved, on the other hand the margins of water streams and reservoirs are the most affected. This indicates that the permanent preservation areas are the results of rules that are often broken but not followed.

Descrição

Palavras-chave

Areas of permanent preservation, Áreas de preservação permanente, Environmental legislation, João Leite river, Extrema river, Use and occupation, Legislação ambiental, Ribeirão Extrema, Uso do solo, Ribeirão João Leite

Citação

BORGES, Raphael de Oliveira; NEVES, Cleuler Barbosa das; CASTRO, Selma Simões de. Delimitação de áreas de preservação permanente determinadas pelo relevo: aplicação da legislação ambiental em duas microbacias hidrográficas no estado de Goiás. Revista Brasileira de Geomorfologia, Curitiba, v. 12, n. 3, p. 109-114, 2011.