globalchange  > 气候变化与战略
DOI: 10.5194/hess-23-1263-2019
论文题名:
Hydrological trade-offs due to different land covers and land uses in the Brazilian Cerrado
作者: Anache J.A.A.; Wendland E.; Rosalem L.M.P.; Youlton C.; Oliveira P.T.S.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期:3
起始页码: 1263
结束页码: 1279
语种: 英语
Scopus关键词: Agriculture ; Commerce ; Groundwater ; Land use ; Uncertainty analysis ; Hydrological process ; Hydrometeorological variables ; Large-scale studies ; Long term observations ; Statistical parameters ; Tropical environments ; Water balance components ; Water partitioning ; Economic and social effects ; agricultural land ; cerrado ; evapotranspiration ; groundwater ; hydrological modeling ; land cover ; land use ; long-term change ; overland flow ; runoff ; trade-off ; water budget ; Brazil ; Sao Paulo [Brazil]
英文摘要: Farmland expansion in the Brazilian Cerrado, considered one of the largest agricultural frontiers in the world, has the potential to alter water fluxes on different spatial scales. Despite some large-scale studies being developed, there are still few investigations in experimental sites in this region. Here, we investigate the water balance components in experimental plots and the groundwater table fluctuation in different land covers: wooded Cerrado, sugarcane, pasture and bare soil. Furthermore, we identify possible water balance trade-offs due to the different land covers. This study was developed between 2012 and 2016 in the central region of the state of São Paulo in southern Brazil. Hydrometeorological variables, groundwater table, surface runoff and other water balance components were monitored inside experimental plots containing different land covers; the datasets were analyzed using statistical parameters; and the water balance components uncertainties were computed. Replacing wooded Cerrado by pastureland and sugarcane shifts the overland flow (up to 42mmyr-1) and the water balance residual (up to 504mmyr-1) and may affect groundwater table behavior. This fact suggests significant changes in the water partitioning in a transient land cover and land use (LCLU) system, as the evapotranspiration is lower (up to 719mmyr-1) in agricultural land covers than in the undisturbed Cerrado. We recommend long-term observations for continuing the evaluations initiated in this study, mainly because there are few basic studies on tropical environments at the hillslope scale and more assessments are needed for a better understanding of the real field conditions. Such efforts should be made to reduce uncertainties, validate the water balance hypothesis and catch the variability of hydrological processes. © Author(s) 2019.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163027
Appears in Collections:气候变化与战略

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作者单位: Anache, J.A.A., Department of Hydraulics and Sanitation, São Carlos School of Engineering (EESC), University of São Paulo (USP), CxP. 359, São Carlos, SP 13566-590, Brazil; Wendland, E., Department of Hydraulics and Sanitation, São Carlos School of Engineering (EESC), University of São Paulo (USP), CxP. 359, São Carlos, SP 13566-590, Brazil; Rosalem, L.M.P., Department of Hydraulics and Sanitation, São Carlos School of Engineering (EESC), University of São Paulo (USP), CxP. 359, São Carlos, SP 13566-590, Brazil; Youlton, C., Department of Hydraulics and Sanitation, São Carlos School of Engineering (EESC), University of São Paulo (USP), CxP. 359, São Carlos, SP 13566-590, Brazil; Oliveira, P.T.S., Federal University of Mato Grosso Do sul, CxP. 549, Campo Grande, MS 79070-900, Brazil

Recommended Citation:
Anache J.A.A.,Wendland E.,Rosalem L.M.P.,et al. Hydrological trade-offs due to different land covers and land uses in the Brazilian Cerrado[J]. Hydrology and Earth System Sciences,2019-01-01,23(3)
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