Losses on the Atlantic ata Vegetation induced by land use changes


Land use changes are related to urbanization, economics and technology, infl uencing the management of natural resources and the ecosystem processes. The present study evaluated the behavior of land use changes in the period of 2007 and 2016, and identifi ed the infl uence of these changes on the Atlantic Forest vegetation and the expected consequences for a future scenario in the short (2020) and medium term (2025). The study was developed in the Una river basin, located in southeastern Brazil. Land use mapping was performed using Landsat 5 and Sentinel-2A satellite imagery, with visual interpretation techniques. The assessment of land use changes and ecological losses was modeled in the Land Change Modeler and the gains and losses for each category and their future scenarios were identifi ed. The calculations of landscape metrics were performed with the V-LATE extension for ArcGIS. The Anthropogenic Exposure Indicator was applied to evaluate the exposure of fragments. The comparative between land uses showed an increase of 484.33 ha of anthropogenic areas and a decrease of 484.14 ha of vegetation. The greater conversion of forests to other uses was related to agriculture. The fragments are under intense edge effect and 13.70% are under high anthropogenic exposure. By 2016, a loss of 484 ha of Atlantic Forest was identifi ed, being expected a loss of 694.11 ha by 2020 and of 934.10 ha by 2025.

LOPES, Elfany Reis do Nascimento; SALES, Jomil Costa Abreu; SOUSA, Jocy Ana Paixão de; AMORIM, Amanda Trindade; ALBUQUERQUE FILHO, José Luiz; LOURENÇO, Roberto Wagner. Losses on the Atlantic ata Vegetation induced by land use changes. Cerne, v.24, p.121-132, 2018.

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