Watershed Management
Mostrando 13-24 de 155 artigos, teses e dissertações.
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13. Methodology for the construction of an urban flood hazard chart
RESUMO Os eventos de inundação são uma das principais causas de prejuízos econômicos e de perdas de vidas humanas em todo o mundo. Infelizmente, a sua ocorrência tem se tornado cada vez mais frequente e de maior magnitude. Para minimizar os riscos aos quais a população está exposta, torna-se necessário investir em ferramentas que auxiliem no proces
RBRH. Publicado em: 27/06/2019
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14. Wastewater infrastructure and the ecology and management of freshwater systems
Resumo Globalmente, os recursos de água doce são influenciados pelo aporte de energia, nutrientes e poluentes das águas residuais. Os gestores locais e os tomadores de decisão têm a tarefa de abordar as preocupações ecológicas e de saúde humana associadas ao envelhecimento e à infraestrutura obsoleta de sistemas de tratamento de esgoto, utilizando
Acta Limnol. Bras.. Publicado em: 13/06/2019
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15. IMPACT OF LAND USE CHANGE ON THE WATER BALANCE IN A REPRESENTATIVE WATERSHED IN THE SEMIARID OF THE STATE OF PERNAMBUCO USING THE SWAT MODEL
ABSTRACT The Brazilian semiarid region present high rainfall variability and long dry periods. Thus, the main springs and streams are generally intermittent, and both native vegetation and human activities have a strong influence on hydrological processes and the water yield in the watershed. The aim of this study was to investigate the impacts of reforestat
Eng. Agríc.. Publicado em: 2019-02
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16. Geomorphology-based unit hydrograph models for flood risk management: case study in Brazilian watersheds with contrasting physiographic characteristics
ABSTRACT Heavy rainfall in conjunction with an increase in population and intensification of agricultural activities have resulted in countless problems related to flooding in watersheds. Among the techniques available for direct surface runoff (DSR) modeling and flood risk management are the Unit Hydrograph (UH) and Instantaneous Unit Hydrograph (IUH). This
An. Acad. Bras. Ciênc.. Publicado em: 21/05/2018
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17. Prediction of Topsoil Texture Through Regression Trees and Multiple Linear Regressions
ABSTRACT: Users of soil survey products are mostly interested in understanding how soil properties vary in space and time. The aim of digital soil mapping (DSM) is to represent the spatial variability of soil properties quantitatively to support decision-making. The goal of this study is to evaluate DSM techniques (Regression Trees - RT and Multiple Linear R
Rev. Bras. Ciênc. Solo. Publicado em: 16/04/2018
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18. MODELING OF PHOSPHORUS LOSSES BY WATER EROSION
ABSTRACT Phosphorus losses in runoff water and eroded sediment may increase the risk of eutrophication. Erosion prediction models can be used to assess and quantify nutrient losses and transport in different soil management scenarios. This study aimed to assess the performance of models to estimate the losses of available phosphorus in eroded sediments and a
Eng. Agríc.. Publicado em: 2018-01
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19. REGIONALIZATION OF MAXIMUM AND MINIMUM FLOW IN THE TELES PIRES BASIN, BRAZIL
ABSTRACT In a watershed there is space and climate variability within its catchment area, causing changes in water qualitative and quantitative characteristics. Thus, the hydrological data collected from a specific basin may be extrapolated to neighboring basins with similar physical characteristics, using techniques of hydrological regionalization. This stu
Eng. Agríc.. Publicado em: 2017-02
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20. A gis-based tool for estimating soil loss in agricultural river basins
Abstract Soil erosion is a major problem observed in terrestrial ecosystems. Monitoring and identifying potential areas for erosion becomes extremely important for the better management of these areas. The main aim of this study was to develop a Geographic Information System script tool based on the universal soil loss equation (USLE), which calculates soil
REM, Int. Eng. J.. Publicado em: 2016-12
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21. Qualitative improvements in the modeling of bathymetric survey in reservoirs through computational tool \"CAV-NH\" / Melhorias qualitativas na modelagem de levantamentos batimétricos em reservatórios por meio da ferramenta computacional \"CAV-NH\"
Freshwater is a finite mineral resource and essential for sustaining life on earth. For proper water resource management in the watershed, it is important to know the reservoirs Elevation-Area-Volume (EAV) curve. Energy companies and government agencies use this curve for their decision-making, considering the multiple uses of the reservoirs. Due to the rese
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2012
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22. Diagnóstico dos agroecossistemas na microbacia hidrográfica do rio Pirapora município de Piedade/SP / Diagnosis of agroecosystems in the micro basin of pirapora river - piedade São Paulo
O presente trabalho teve como objetivo realizar o diagnostico de 25 agroecossistemas localizados na microbacia do rio Pirapora, no município de Piedade, estado de São Paulo, focalizando particularmente as práticas de manejo adotadas. As implicações socioeconômicas, produtivas e ambientais dessas práticas foram analisadas e contextualizadas no cenário
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/08/2012
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23. A dinâmica temporal da vulnerabilidade ambiental do Sistema Cantareira: o caso de duas sub-bacias hidrográficas formadoras do Reservatório Jaguari-Jacareí / The temporal dynamics of environmental vulnerability of the Cantareira System: the case of two sub-basins forming Jaguari-Jacareí watershed
A realidade da maioria dos mananciais que abastecem regiões metropolitanas está intimamente ligada aos processos de uso e ocupação do seu entorno relacionados à expansão urbana e à proliferação de loteamentos e centros industriais, que são implantados sem uma adequada infraestrutura, interferindo de forma negativa na qualidade e quantidade dos recu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2012
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24. Influência de um fragmento florestal sobre as comunidades de macroinvertebrados de um córrego tropical degradado
Land use changes have resulted in large environmental impacts, and in agricultural landscapes sometimes only forest fragments remain. However, riparian forest remnants can influence positively stream water quality, and serve as refuge to aquatic species sensible to deforestation. We evaluated if the presence of a riparian forest remnant influences the struct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/07/2012