Forest Plantations and Water Consumption: A Strategy for Hydrosolidarity

Lima, William P.; Laprovitera, R.; Ferraz, Simone Erotildes Teleginski; Rodrigues, Carolina Bozetti; Silva, M. M.

doi:10.1155/2012/908465

Cited by 27 publications

(23 citation statements)

References 35 publications

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“…In our study, the native vegetation with high liana infestation had the same availability of soil water as that in the eucalypt stand between 18 and 36 months after the eucalypt planting. In order to correctly apply the eucalypt zoning, differences in water drainage during the rotation must be taken into account (Laclau et al, 2005;Lima et al, 2012).…”

Section: Water Dynamics In the Soil And Soil Solutionmentioning

confidence: 99%

Soil water dynamics and litter production in eucalypt and native vegetation in southeastern Brazil

Silva

Poggiani

Lima

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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High productivity of eucalypt plantations is the result of advances in research that have led to gradual improvements in intensive silvicultural technology. High productivity notwithstanding, eucalypt plantations remain the focus of environmental concerns. Our study aimed to compare the soil water regime, litter fall and nutrients dynamics either in a fragment of native forest or in an adjacent stand of growing eucalypt. We took field measurements during the first three years of eucalypt plantation in a sandy soil in the southeastern region of Brazil. Soil moisture and internal drainage were higher during the early stages of growth of the eucalypt stand, as compared with native vegetation. However, one and a half years after planting, available soil water was similar in both vegetations. Higher water availability under the eucalypt stand during the first year occurs because of silvicultural operations (soil preparation and weed control) and the small size of eucalypt trees; these factors increase water infiltration and decrease transpiration. Total leaf fall, over the study period, was similar for both ecosystems; however, differences were observed in the winter and early spring of 2010. The transfer of nutrients to soil by leaf fall was similar except for N and S, which was higher in native vegetation. Nitrogen concentration in the soil solution was higher in native vegetation, but K was higher under the eucalypt stand, mainly to a depth of up to 0.2 m.

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Section: Water Dynamics In the Soil And Soil Solutionmentioning

confidence: 99%

Soil water dynamics and litter production in eucalypt and native vegetation in southeastern Brazil

Silva

Poggiani

Lima

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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“…2. Pasture is characterized by a small biomass and a shallow root system, promoting a reduction in evapotranspiration and an increase in direct runoff (surface and subsurface) to the drainage network, increasing the values of annual mean flow in the basin (Lima et al, 2012). Comparatively, the native 'Cerrado' vegetation and the seasonal semideciduous forest intercept more water in the canopy, and also transpire more than low grasslands.…”

Section: Resultsmentioning

confidence: 99%

Impact of changes in land use in the flow of the Pará River Basin, MG

Rodrigues

Elmiro

Braga³

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C TPlant cover plays an essential role in the maintenance and balance of the hydrological cycle, performing functions in the control of water availability, which guarantee flow permanence. The use of mathematical models is an alternative to represent the hydrological system and help in the understanding of phenomena involving the variables of the water cycle, in order to anticipate and predict impacts from potential changes in land use. In the present study, the hydrological model SWAT (Soil and Water Assessment Tool) was used to analyse the dynamics of flow and water flow in the Pará River Basin, Minas Gerais, Brazil, aiming to evaluate the impact caused by changes in land use in water availability. The adjusted model was assessed by the coefficient of efficiency of Nash-Sutcliffe (between -0.057 to -0.059), indicating high correlation and coefficient of residual mass (0.757 to 0.793) and therefore a satisfactory fit. An increase of about 10% in the basin flow was estimated, as a function of changes in land use, when simulating the removal of the original 'Cerrado' vegetation and of the seasonal semideciduous forest for pasture implementation in 38% of the basin.Impacto de alterações no uso do solo na vazão da Bacia do Rio Pará, MG R E S U M OA cobertura vegetal exerce papel fundamental na manutenção e no equilíbrio do ciclo hidrológico, desempenhando funções no controle da produção de água que garantem a permanência de vazões. O uso de modelos matemáticos é uma alternativa para representar o sistema hidrológico e auxiliar na compreensão dos fenômenos que envolvem as variáveis do ciclo da água para antecipar impactos decorrentes de eventuais mudanças no uso da terra. Neste trabalho é utilizado o modelo hidrológico SWAT (Soil and Water Assessment Tool) para analisar a dinâmica da vazão na bacia do Rio Pará, em Minas Gerais, Brasil, com o objetivo de avaliar o impacto provocado pelas alterações de uso do solo na disponibilidade de água da bacia do Rio Pará. O ajuste do modelo foi avaliado pelo coeficiente de eficiência de Nash-Sutcliffe (entre -0,057 a -0,059) indicando alta correlação e coeficiente de massa residual (0,757 a 0,793) e, portanto, um ajuste satisfatório. Estima-se que houve incremento de cerca de 10% na vazão da bacia em função das alterações no uso do solo, contemplando basicamente a supressão da vegetação original de Cerrado e de Floresta Estacional Semidecidual para implantação de pastagem em 38% do território da bacia.

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“…Generally, these researches (Hibbert 1967;Bosch & Hewlett 1982;Andre´assian 2004;Brown et al 2005) use paired catchment experiments approach. The general conclusion indicate that forest cover reduction (deforestation) will increase water yield, whereas reforestation in opened land will decrease it (Bosch & Hewlett 1982;Andre´assian 2004;Farley et al 2005;Lima et al 2012). The amount of this reduction varies from one experiment to another (Bruijnzeel 2004), and this is caused by a complex interaction among vegetation, climate, and soil (Zhou et al 2010).…”

Section: Introductionmentioning

confidence: 99%