Estimativa da evaporação nos reservatórios de Sobradinho e Três Marias usando diferentes modelos

Vieira, Natália Gomes; Pereira, Sílvio Bueno; Martinez, Mauro Aparecido; Silva, Demétrius David da; Silva, Felipe Bernardes

doi:10.1590/1809-4430-eng.agric.v36n3p433-448/2016

Cited by 8 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Por exemplo, Curtarelli et al (2013) encontrou no reservatório da Itumbiara no Rio Paraná, valores de aproximadamente 1.7 bilhões de m3 de água evaporada representado 10% do volume total do reservatório. Estes valores são similares aos observados no reservatório Sobradinho no rio São Francisco, na ordem de 16,2%, e 10,2% no reservatório de Ilha Solteira (Lima e Abreu, 2015;Vieira et al, 2016). No entanto, não existem estudos que demonstrem perda de água em reservatórios em escala de pequenas bacias hidrográficas.…”

Section: Discussionunclassified

Diagnóstico participativo de uma microbacia hidrográfica no sudeste do Brasil: premissas de ordenação ambiental e agrícola (Participatory diagnosis of a micro basin in southeastern Brazil: premises for environmental and agricultural management)

Rodrigues¹,

Villa

Rodrigues

et al. 2019

Rev. Bras. Geog. Fis.

View full text Add to dashboard Cite

As mudanças no uso da terra ao longo da história têm gerado negativas consequências para Mata Atlântica, deixando-a apenas com cerca de 10% de florestas maduras, com uma redução expressiva dos reservatórios de água e degradação de bacias hidrográficas. Nesta pesquisa diagnosticou-se o padrão atual e potencial de ocupação e uso da terra numa microbacia hidrográfica no Município São Miguel do Anta, Minas Gerais, Brasil. Esta pesquisa também teve como prioridade desenvolver um plano de manejo e conservação do recurso hídrico da comunidade. A bacia hidrográfica é ocupada atualmente por pequenos e médios agricultores correspondendo um total de nove propriedades, que mantêm diferentes atividades de produção agrícola e pecuária, principalmente cultivo de café, milho, feijão, eucalipto e granjas de frango de corte como parte do sustento econômico familiar. Os resultados desta pesquisa revelam o padrão de uso e ocupação de uma microbacia no Sudeste do Brasil, onde a maior proporção de área é destinada para atividades de produção agrícola e pecuária. A partir deste padrão de ocupação e das estimações de consumo de água nas diferentes propriedades, propõe-se um plano de manejo preliminar com algumas premissas para a conservação e recuperação desta microbacia. Destaca-se a importância dos sistemas agroflorestais e corredores biológicos como ações imediatas de reabilitação de áreas degradadas e restauração ecológica, com a finalidade de reduzir as perdas de água por escoamento superficial, assim como a perda e degradação de solos. Palavras-chave: Agrofloresta, Área de Preservação Permanente, corredor biológico, reabilitação de áreas degradadas. Participatory diagnosis of a micro basin in southeastern Brazil: premises for environmental and agricultural management A B S T R A C T Changes in land use throughout history have generated negative consequences in the Atlantic Forest, leaving it with only about 10% of mature forests, such as a reduction of water reservoirs and degradation of hydrographic basins. In this research the current pattern and potential of land use and use in a hydrographic basin in the Municipality of São Miguel do Anta, Minas Gerais, Brazil, was diagnosed. This research also had as a priority to develop a management and conservation plan of the water resource of the community. The hydrographic basin is currently occupied by small and medium-sized farmers, corresponding to a total of nine properties, which maintains different agricultural and livestock production activities, mainly of coffee, corn, beans, eucalyptus and chicken farms as part of the economic sustenance family. The results of this research reveal the pattern of use and occupation of a microbasin in the Southeast of Brazil, where the largest proportion of area is destined for agricultural and livestock production activities. From this occupation pattern and water consumption estimates in the different properties, a preliminary management plan with some premises for the conservation and recovery of this microbasin is proposed. It is important to...

show abstract

Section: Discussionunclassified

Diagnóstico participativo de uma microbacia hidrográfica no sudeste do Brasil: premissas de ordenação ambiental e agrícola (Participatory diagnosis of a micro basin in southeastern Brazil: premises for environmental and agricultural management)

Rodrigues¹,

Villa

Rodrigues

et al. 2019

Rev. Bras. Geog. Fis.

View full text Add to dashboard Cite

show abstract

“…Climatological water balance (CWB) proposed by Thorntwaite and Mather (1955), was used to calculate ETr, and the potential evapotranspiration estimation (ETp) was performed with the equation proposed by the same authors. The monthly data of average air temperature and precipitation were obtained from Vieira (2015).…”

Section: Water Footprint Estimation For the Hydroelectric Generationmentioning

confidence: 99%

Water footprint of the Sobradinho hydropower plant, Northeastern Brazil

Vieira¹,

Bueno²,

Pereira³

et al. 2018

Rev. ambiente água

View full text Add to dashboard Cite

Hydroelectricity is responsible for the greatest fraction of the electric energy generated in Brazil. The water footprint of hydropower plants (WFP) is an important indicator of the sustainable and efficient use of water resources. In this context, WFP of the Sobradinho Hydropower Plant was determined for the period from 2003 to 2012, taking into account the reservoir’s historical variation for the flooded area. To accomplish this, monthly series of electric energy production, flooded area, evaporation and evapotranspiration rates were used. Average gross and net evaporation were 2,031 and 1,577 mm year-1, respectively. The average power generation of this facility in the analyzed period was 462 MW, and the flooded area of its reservoir presented an average value of 3,054 km². Based on the monthly data, the gross and net water footprints were, respectively, 417 and 325 m³ GJ-1. Based on these results, it can be concluded that the changes in the reservoir’s area exert direct and important influence on the WFP estimates of the Sobradinho hydropower plant. The WFP estimates in this study were different from other studies that adopted a constant value of 4,214 km² for this reservoir’s area, which is taken based on the normal water level of the plant operation.

show abstract

“…The Sobradinho Reservoir is located in the sub-medium region of the São Francisco Basin near Sobradinho County, Bahia, and approximately 40 km upstream from the cities of Juazeiro (Bahia) and Petrolina (Pernambuco). The Sobradinho hydropower plant (HPP) has an important role in electric energy generation along with water flow regulation for entire the basin (Vieira, 2015).…”

Section: Study Areamentioning

confidence: 99%

Untitled

2018

Rev. ambiente água

View full text Add to dashboard Cite

show abstract

Estimativa da evaporação nos reservatórios de Sobradinho e Três Marias usando diferentes modelos

Cited by 8 publications

References 16 publications

Diagnóstico participativo de uma microbacia hidrográfica no sudeste do Brasil: premissas de ordenação ambiental e agrícola (Participatory diagnosis of a micro basin in southeastern Brazil: premises for environmental and agricultural management)

Diagnóstico participativo de uma microbacia hidrográfica no sudeste do Brasil: premissas de ordenação ambiental e agrícola (Participatory diagnosis of a micro basin in southeastern Brazil: premises for environmental and agricultural management)

Water footprint of the Sobradinho hydropower plant, Northeastern Brazil

Untitled

Contact Info

Product

Resources

About