Private lands are important for conservation worldwide, but knowledge about their effectiveness is still insufficient. To help fill this important knowledge gap, we analyzed the impacts of a national policy for conservation on private lands in Brazil, a global biodiversity hotspot with high potential for nature-based climate solutions. Through the evaluation of over 4 million private rural properties from the Rural Environmental Cadastre, we found that the last policy review in 2012 mainly affected the Amazon Forest. The amnesty granted to 80% of landowners of small properties prevented the restoration of 14.6 million hectares of agricultural land with a carbon sequestration potential of 2.4 gigatonnes. We found that private lands exist within the limits of public conservation areas and that between 2003 and 2020 deforestation rates in these private lands were higher than those across all conservation areas. The Rural Environmental Cadastre can be an effective tool for managing forests within private lands, with potential to integrate governance approaches to control deforestation and mitigate climate change.
Palavras-chave: uso do solo; zonas de manejo; geoprocessamento. SILVA, R. F. B. da; NOSSACK, F. A.; SARTORI, A. A. C.; ZIMBACK, C. R. L.; MORAES, P. I. de. GEOINFORMATIONIN WATER RESOURCES MANAGEMENT IN SUB-BASIN ABSTRACTBy remote sensing, geodatabase digital processing, information and expeditions to Capivara's sub-basin, was possible to identify the changes in the landscape mainly the expansion of eucalyptus, sugar-cane, and orange trees, being the last two, mainly on the Periferic Depression of Basaltic Cuesta. A significant portion of the soil on this geological area is formed from sandstones, providing high permeability to them, making them important places to groundwater recharge areas as sensible to contamination by pesticides. Throughout last decade was observed that the native vegetation fragments stabilization, keeping a reason of 26.5% on the land used between 2000 and 2010. The pasture decrease being substituted by eucalyptus, sugar-cane and orange trees call attention for the changes in the agribusiness
ResumoEste estudo teve como objetivo avaliar o emprego da Avaliação Multicritérios em ambiente SIG, especificamente por meio do método Combinação Linear Ponderada, na geração de mapa de área prioritária à restauração florestal, na parte inicial da bacia do rio Pardo, SP, visando à conservação de recursos hídricos. Na definição dos critérios e restrições, empregou-se a Técnica Participativa. Foram selecionados os seguintes fatores: proximidade da rede hidrográfica, proximidade da cobertura florestal, declividade e erodibilidade do solo. Para calcular o peso para cada fator, foi utilizado o processo de tomada de decisão, conhecido como Análise Hierárquica Analítica. Esse método emprega uma comparação pareada entre fatores para determinar a importância relativa de cada um deles. Pela Combinação Linear Ponderada, as áreas de prioridade muito alta apresentam uma distribuição espacial mais restrita, com uma concentração aparente ao redor dos corpos d'água, delineando uma área-tampão (buffer) para a rede hidrográfica. O fator proximidade da rede hidrográfica, além de possibilitar a conexão florestal, colaborou, juntamente com o fator proximidade da cobertura florestal, para que houvesse a definição de grande parte das áreas com maior prioridade em regiões da bacia, que concentram as maiores áreas de floresta nativa e áreas ripárias ao longo da hidrografia. Palavras-chave: Recomposição florestal; áreas prioritárias; SIG. Abstract Forest restoration aiming at the conservation of water resources by Weighted Linear Combination.This study evaluated using of Multicriteria Evaluation in a GIS, specifically by Weighted Linear Combination Method for generation of map of priority areas for forest restoration in the initial part of River Pardo Basin, SP, in order to water resources conservation. Aiming to define criteria and restrictions it was used Participatory Techniques, and the following factors had been selected: proximity of the hydrographic network, proximity of forest cover, slope and erodibility of soil. To calculate the weight to each factor it was used the decision-making process, known as Analytic Hierarchy Analysis, this method consists of a paired comparison of factors to determine the relative importance of each. According to Weighted Linear Combination, the very high priority areas have a more limited spatial distribution, with an apparent concentration around the water bodies, outlining a buffer to the river system. The proximity factor of the hydrographic network, and enables the connection forestry, contributed, along with the factor of proximity to forest cover, so there would be the definition of most of the areas with the highest priority in the basin, which concentrate the largest areas of forest and native riparian areas along the hydrographic.
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