Contribuições metodológicas para análise de vulnerabilidade ambiental em compartimentos topográficos com cobertura vegetal densa no município de Ubatuba-SP
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Data
2018-03-02
Autores
Silva, Danilo Santos da [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
As intervenções sociais no relevo transformam a paisagem e modificam a dinâmica dos sistemas naturais ao acelerar as ações do tempo, o que pode causar danos ao ser humano e consequentemente afetar os elementos bióticos de um ecossistema. A busca por uma interpretação possível desses processos a partir de uma análise da Geografia e da Geomorfologia permitiu elaborar contribuições fundamentais para a compreensão de fenômenos que revelam a dimensão e o conteúdo das complexidades ambientais da floresta a partir do relevo. A presente pesquisa demonstra que a elevada declividade e presença de condicionantes físicas, climáticas, assim como, aquelas relacionadas à cobertura vegetal e uso do solo, influenciam diretamente na estabilidade do terreno e manutenção das características naturais da planície costeira da Serra do Mar. A contribuição metodológica foi baseada na proposta da Ecodinâmica, a partir da qual foi elaborado o mapa de vulnerabilidade ambiental, com uso da análise integrada sob o ponto de vista dos estudos da paisagem. A combinação dos dados de suscetibilidade a movimentos gravitacionais de massa e inundação aos de riqueza florestal, por meio do processamento em ambiente de Sistemas de Informação Geográfica (SIG), permitiu identificar que os usos históricos realizados por populações tradicionais influenciam de forma positiva a composição dos fragmentos florestais, o que pode gerar subsídios para propostas de planos de adaptação baseados em ecossistemas.
The social interventions in relief transform the landscape and modify the dynamics of natural systems by accelerating the actions of time, which can cause damages to human being and consequently affect the biotic elements of an ecosystem. A search for a possible interpretation of these processes of geography and geomorphology analysis allowed to elaborate fundamental contributions to the understanding of phenomena that reveal the dimension and the content of the environmental complexities of the forest from the relief. The present research demonstrates that the high slope and presence of physical and climatic conditions, as well as those related to vegetation cover and land use, they have directly influence in the land stability and maintenance of the natural characteristics of the plain coastal of Serra do Mar. The methodological contribution was based on the proposal of Ecodynamics, from which the environmental vulnerability map was elaborated using the integrated analysis from the point of view of the landscape studies. The combination of susceptibility data to mass gravity movements and flood to the forest richness, through processing in a Geographic Information Systems (GIS) allowed to identify that the historical uses made by indigenous peoples positively influence the composition of the forest fragments, which can generate subsidies for proposals for ecosystem-based adaptation plans.
The social interventions in relief transform the landscape and modify the dynamics of natural systems by accelerating the actions of time, which can cause damages to human being and consequently affect the biotic elements of an ecosystem. A search for a possible interpretation of these processes of geography and geomorphology analysis allowed to elaborate fundamental contributions to the understanding of phenomena that reveal the dimension and the content of the environmental complexities of the forest from the relief. The present research demonstrates that the high slope and presence of physical and climatic conditions, as well as those related to vegetation cover and land use, they have directly influence in the land stability and maintenance of the natural characteristics of the plain coastal of Serra do Mar. The methodological contribution was based on the proposal of Ecodynamics, from which the environmental vulnerability map was elaborated using the integrated analysis from the point of view of the landscape studies. The combination of susceptibility data to mass gravity movements and flood to the forest richness, through processing in a Geographic Information Systems (GIS) allowed to identify that the historical uses made by indigenous peoples positively influence the composition of the forest fragments, which can generate subsidies for proposals for ecosystem-based adaptation plans.
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Geografia, Geomorfologia, Fitogeografia, Mata Atlântica, Serra do Mar, Vulnerabilidade ambiental, Geography, Geomorphology, Environmental vulnerability, Phytogeography, Atlantic Forest