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As mudanças nas leis florestais e a quantificação de serviços ecossistêmicos em microbacias rurais

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ROSÁRIO_Victor_2018.pdf (5.210Mb)
Date
2018-07-13
Author
Rosário, Victor Alexandre Carlotti
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Abstract
The demand for information about resources quantity and quality of a watershed, and how these resources are related with riparian forests, restoration, farming and Ecosystem Services (ES) production, are very debated nowadays. Thus, the determination of factors that directly and indirectly affect the quality and quantity of these resources, and how it affects the landscape dynamic, must be studied for a better balance between agriculture and environment. The objective of this study is quantify the potential of ES production related to soil conservation and carbon stock in different forest restoration scenarios and the adoptions of soil conservation practices in agriculture areas. Two micro watersheds were studied: Posses (Extrema – MG) and Ribeirão Vermelho (São Pedro – SP). Three scenarios were considered: the current land use and soil cover, the old Forest Code (1965 – scenario I), and the Native Vegetation Protection Law (NVPL, 2012 – scenario II). The metrics used in this evaluation were soil loss, soil retention and sedimentation. Carbon stock was estimated for current forest cover, for restoration areas and for the others current land covers and uses. To evaluate the soil conservation and agricultural practices were simulated different scenarios with and without conservation practices and different riparian forest protection buffers. Regarding the current scenario, the NVPL will increase the forest cover, decrease sedimentation, soil loss and increase the carbon stock for the Posses and Ribeirão Vermelho micro watersheds. It was verified that the a bigger forest cover (scenario I), provides less soil loss and less sediment that reaches the waterways when compared to landscapes with lower amount of native vegetation (scenario II). Therefore, the NVPL will reduce the area to be restored, the potential of recovery of forest cover and the ES production related with soil conservation in the micro watersheds studied compared to what would be obtained with the old forest code. In addition, the conservation practices adoption, with and without, influenced soil loss and sedimentation more than the riparian vegetation buffers, evidencing the importance of the adoption of good agricultural practices within the concept of forest restoration and landscape.
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https://repositorio.ufscar.br/handle/ufscar/10749
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UFSCar
Universidade Federal de São Carlos - UFSCar
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UFSCar
Universidade Federal de São Carlos - UFSCar
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