Zoneamento geoambiental como subsídio aos projetos de reforma agrária. Estudo de caso: assentamento rural Pirituba II (SP)
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Data
2006-09-09
Autores
Shimbo, Julia Zanin [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
Os projetos de reforma agrária apresentam dificuldades de planejamento para uso e ocupação da terra. Esses problemas afetam a qualidade de vida das famílias, a produtividade e a sustentabilidade ambiental. Isso se deve à carência de estudos interdisciplinares detalhados de diagnósticos e zoneamentos ambientais para implantação, desenvolvimento e gestão desses assentamentos. Assim, o objetivo principal desse estudo é estabelecer o zoneamento geoambiental no assentamento rural Pirituba II (Itapeva/Itaberá/SP) e analisar o uso desse instrumento para melhorar os projetos de reforma agrária que visem a sustentabilidade socioambiental. Para isso, foram realizadas fotointerpretação de fotos aéreas (escala 1:25.000) e verificações em campo para detalhar as informações ambientais básicas de drenagem, geologia estrutural, de unidades fisiográficas, e pedológicas. Essas informações permitiram a compreensão da evolução e dinâmica da paisagem. A partir da caracterização das unidades fisiográficas colúvio-aluvionares da área foram estabelecidos os fatores e processos endógenos e exógenos que resultaram na formação das paisagens. Isto permitiu estabelecer as zonas geoambientais (unidades aloestratigráficas). Essas foram divididas em subzonas geoambientais pela análise estrutural e fisiográfica, para posteriormente determinar as potencialidades e limitações de tais unidades. Dessa forma, mapas temáticos foram elaborados quanto à: suscetibilidade à erosão, indicação de áreas para proteção ambiental e adequação a culturas anuais. A aplicação do zoneamento geoambiental no assentamento Pirituba II forneceu um estudo detalhado e integrado do meio físico para planejamento local visando a sustentabilidade socioambiental. Portanto, esse zoneamento pode ser uma ferramenta útil para a gestão territorial e melhoria dos projetos de reforma agrária.
The environmental diagnostic studies that aim planning for land reform settlements are few and still present some gaps. These affect the life quality of families, productivity and environmental sustentability. Geoenvironmental zoning is based on the integration of physical aspects, and for this reason it may contribute with information that will be used for the environmental analysis of these settlements. The aim of the present study is to evaluate the geoenvironmental zoning applied to the Pirituba II Settlement (Itapeva/Itaberá/SP) as a reliable tool and instrument for the definition of lines that can help in the sustainable implementation of land reform projects, as much by the social view as by the environmental focus. For this the drainage, structural geology, physiographic unities and pedological basic environmental information were detailed through field and laboratory works (aerial photointerpretation). This information have enabled better undestanding of the landscape dynamic and evolution. Physiographic characterization for colluvial and alluvial units of the studied area permitted to establish the factors and processes, both endogenetic and geomorphic, that resulted in the landscape formation. The geoenvironmental zoning was defined by this purpose, which generate subdividing operations into structural and physiographic analysis, for as much as the potentiality and limitation determination of them as entities. The following thematic maps were obtained, therefore: erosion vulnerability, environmental protection indication and agricultural annual rotation. The results of the geoenvironmental zoning work in the Pirituba II Settlement allowed the definition of environmental planning detailed strategies in agreement with sustainable reality.
The environmental diagnostic studies that aim planning for land reform settlements are few and still present some gaps. These affect the life quality of families, productivity and environmental sustentability. Geoenvironmental zoning is based on the integration of physical aspects, and for this reason it may contribute with information that will be used for the environmental analysis of these settlements. The aim of the present study is to evaluate the geoenvironmental zoning applied to the Pirituba II Settlement (Itapeva/Itaberá/SP) as a reliable tool and instrument for the definition of lines that can help in the sustainable implementation of land reform projects, as much by the social view as by the environmental focus. For this the drainage, structural geology, physiographic unities and pedological basic environmental information were detailed through field and laboratory works (aerial photointerpretation). This information have enabled better undestanding of the landscape dynamic and evolution. Physiographic characterization for colluvial and alluvial units of the studied area permitted to establish the factors and processes, both endogenetic and geomorphic, that resulted in the landscape formation. The geoenvironmental zoning was defined by this purpose, which generate subdividing operations into structural and physiographic analysis, for as much as the potentiality and limitation determination of them as entities. The following thematic maps were obtained, therefore: erosion vulnerability, environmental protection indication and agricultural annual rotation. The results of the geoenvironmental zoning work in the Pirituba II Settlement allowed the definition of environmental planning detailed strategies in agreement with sustainable reality.
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Palavras-chave
Geografia física - Aspectos ambientais, Assentamentos humanos, Physical geography, Human settlements
Como citar
SHIMBO, Julia Zanin. Zoneamento geoambiental como subsídio aos projetos de reforma agrária. Estudo de caso: assentamento rural Pirituba II (SP). 2006. 154 f. Dissertação (mestrado) - Universidade Estadual Paulista, Instituto de Geociências e Ciências Exatas, 2006.