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      HYDROLOGIC IMPACTS DUE TO THE CHANGES IN RIPARIAN BUFFER IN A HEADWATER WATERSHED Translated title: IMPACTOS HIDROLÓGICOS DEVIDO ÀS ALTERAÇÕES NA LARGURA RIPÁRIA EM UMA BACIA HIDROGRÁFICA DE CABECEIRA

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          Abstract

          ABSTRACT In recent years, concerns regarding the impacts of deforestation of riparian vegetation on water resources have created social and political tensions in Brazil. This research analyzed simulated hydrologic components of a 6.76 km2 headwater watershed with different widths of riparian vegetation. Lavrinha Watershed (LW) hydrological responses were simulated using the Distributed Hydrology Soil Vegetation Model (DHSVM), which was forced using meteorological data from one station (2005-2010). Land cover scenarios where the percent land cover of Atlantic Forest was increased from the control resulted in changes in hydrologic components in the watershed due to increased evapotranspiration and rainfall interception and reduced runoff and overland flow. The base flow/runoff relationship has increased, suggesting that riparian vegetation plays an important role in groundwater recharge. Modeling of hydrologic components linked to riparian buffer scenarios, such as the process used in this study, can be a useful tool for decision-making strategies regarding watershed management.

          Translated abstract

          RESUMO Nos últimos anos, as preocupações quanto aos impactos do desmatamento da vegetação ripária nos recursos hídricos criaram tensões sociais e políticas no Brasil. Esta pesquisa analisou os componentes hidrológicos simulados de uma bacia hidrográfica de cabeceira de 6,76 km2 com diferentes larguras de vegetação ripária. As respostas hidrológicas da Bacia Hidrográfica Lavrinha (BHL) foram simuladas utilizando o Distributed Hydrology Soil Vegetation Model (DHSVM) que foi forçado usando dados meteorológicos de uma estação (2005-2010). Os cenários de cobertura do solo em que o percentual da Mata Atlântica foi aumentado do controle resultaram em mudanças nas componentes hidrológicas na bacia hidrográfica devido ao incremento da evapotranspiração e intercepção da precipitação e redução do escoamento total e escoamento superficial. A relação escoamento base/escoamento total aumentou, sugerindo que a vegetação ripária desempenha um papel importante na recarga de água subterrânea. A modelagem dos componentes hidrológicos, associada aos cenários de larguras ripárias, como o processo utilizado para este estudo, pode ser uma ferramenta útil para as estratégias de tomada de decisão referente à gestão de bacias hidrográficas.

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          A distributed hydrology-vegetation model for complex terrain

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            Streamside Forest Buffer Width Needed to Protect Stream Water Quality, Habitat, and Organisms: A Literature Review

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              The revision of the Brazilian Forest Act: increased deforestation or a historic step towards balancing agricultural development and nature conservation?

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cerne
                CERNE
                CERNE
                UFLA - Universidade Federal de Lavras (Lavras, MG, Brazil )
                0104-7760
                2317-6342
                March 2017
                : 23
                : 1
                : 95-102
                Affiliations
                [2] São José dos Campos São Paulo orgnameNational Center for Natural Disaster Monitoring and Alerts Brazil
                [1] Lavras Minas Gerais orgnameUniversidade Federal de Lavras Brazil
                Article
                S0104-77602017000100095
                10.1590/01047760201723012205
                b80962d4-cc74-47ba-9dba-b95cba74c877

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 23 July 2016
                : 14 March 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 31, Pages: 8
                Product

                SciELO Brazil


                Bacia Hidrográfica de cabeceira,Cenários de Cobertura do Solo,Mata Atlântica,DHSVM,Lei Florestal Brasileira,Headwater Watershed,Land Cover Scenarios,Atlantic Forest,Brazilian Forest Act

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