masterThesis
Análise da bacia hidrográfica do Rio Punaú-Rio Grande do Norte utilizando ferramentas de geoprocessamento
Fecha
2009-12-21Registro en:
SILVEIRA, Ana Beatriz Silva da. Análise da bacia hidrográfica do Rio Punaú-Rio Grande do Norte utilizando ferramentas de geoprocessamento. 2009. 110 f. Dissertação (Mestrado em Saneamento Ambiental; Meio Ambiente; Recursos Hídricos e Hidráulica) - Universidade Federal do Rio Grande do Norte, Natal, 2009.
Autor
Silveira, Ana Beatriz Silva da
Resumen
Provide data and information on watershed becomes important since the knowledge
of their physical characteristics, land use, etcetera, allows for better planning and
sustainable use of economically, socially and environmentally in this area. The
investigation of the physical environment has been commonly given with the use of
geoprocessing, which has proved a very efficient tool. Within this context, this
research aims at analyzing the river basin Punaú (located in the cities of Touros, Rio
do Fogo and Pureza, state of Rio Grande do Norte) in several aspects, using
geoprocessing as a tool of work, to provide information about the entire watershed.
Specifically, this study aimed to update pre-existing maps, such as geological,
geomorphological and land use, generating map of environmental vulnerability, under
the aspect of erosion susceptibility of the area, generating map of legal
incompatibility, identifying areas that are already being employed in breach of
environmental legislation; propose solutions to the occupation of the river basin
Punaú, focused on environmental planning. The methodology was based on the use
of geoprocessing tools for data analysis and to make maps of legal incompatibility
and environmental vulnerability. For the first map was taken into account the
environmental legislation regarding the protection of watersheds. For the vulnerability
analysis, the generated map was the result of crossing the maps of geology,
geomorphology, soils and land use, having been assigned weights to different
attributes of thematic maps, generating a map of environmental vulnerability in
relation to susceptibility to erosion. The analysis results indicate that agriculture is the
most significant activity in the basin, in total occupied area, which confers a high
degree of environmental vulnerability in most of the basin, and some agricultural
areas eventually develop in a manner inconsistent with Brazilian environmental
legislation. It is proposed to consider deploying a measure of revitalization of the
watershed in more critical areas and conservation through mitigation measures on
the causes of environmental degradation, such as protection of water sources,
protection and restoration of riparian vegetation, protection of permanent
preservation areas, containment of erosion processes in general, and others listed or
not in specific laws, and even the establishment of a committee of basins in the area