A hillslope scale comparison of tree species influence on soil moisture dynamics and runoff processes during intense rainfall

Jost, G.; Schume, Helmut; Hager, Herbert; Markart, Gerhard; Köhl, Bernhard

doi:10.1016/j.jhydrol.2011.11.057

Cited by 89 publications

(63 citation statements)

References 26 publications

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“…Results similar to those found for CR 35 and TC were reported by Jost et al (2012). The authors showed that relationships of rainfall-flow vary according to the species that make up the plant cover.…”

Section: Resultssupporting

confidence: 85%

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Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Andrade

Costa²,

Santos³

et al. 2017

AGRO@MBIENTE ON-LINE

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Abstract:The scarcity of information on the processes of rainfall-flow limits understanding of the hydrology of dry regions of the world. In order to minimise the problem, this study was developed to investigate the influence of the characteristics of rainfall events and plant cover on the effective precipitation (Pe) in a seasonally dry tropical forest (SDTF) in the Northeast of Brazil. The study was carried out in two paired watersheds, one with SDTF under regeneration for 35 years (CR35) and the other under thinned SDTF for 5 years (TC). A historical series of five years (2009)(2010)(2011)(2012)(2013) was analysed, with a total of 203 rainfall events, where only those rainfall events that generated a Pe > 1.0 mm were considered. CR35 had a greater number of Pe events (47) than TC (35). Rainfall depth and intensity were the factors that best explained the effective precipitation under both types of vegetation cover. The influence of herbaceous vegetation on the reduction of surface runoff was demonstrated by the smaller runoff depth and the greater potential for soil water storage in the watershed under thinned Caatinga. This fact leads to the conclusion that the technique of thinning is suitable management for Caatinga vegetation, and is capable of promoting the retention of soil water. Resumo: A escassez de informações sobre os processos chuva-deflúvio é uma limitação no entendimento da hidrologia das regiões secas do globo terrestre. Buscando minimizar esta problemática, desenvolveuse este estudo objetivando investigar as influências das características dos eventos pluviométricos e da cobertura vegetal na precipitação efetiva (Pe) em floresta tropical sazonalmente seca (FTSS), no nordeste do Brasil. O estudo foi realizado em duas microbacias emparelhadas, uma com FTSS em regeneração há 35 anos (CR35) e outra com FTSS raleada há 5 anos (CR). Foi analisada uma série histórica de cinco anos (2009)(2010)(2011)(2012)(2013), com um total de 203 eventos pluviométricos, sendo considerados somente os eventos pluviométricos que geraram Pe > 1,0 mm. A CR35 apresentou um maior número de eventos (47) de Pe do que a CR (35). A altura pluviométrica e as intensidades foram os fatores que melhor explicaram a precipitação efetiva em ambas as coberturas vegetais. A influência da vegetação herbácea na redução do escoamento superficial foi evidenciada pelas menores lâminas escoadas e pelo maior potencial de armazenamento de água no solo na microbacia com a Caatinga raleada. Tal fato permite concluir que a técnica de raleamento representa um manejo apropriado para a vegetação da Caatinga, sendo capaz de promover a retenção de água no solo.Palavras-chave: Chuva-deflúvio. Uso da terra. Estrato herbáceo. Semiárido.Revista Agro@mbiente On-line, v. 11, n. 4, p. 258-268, outubro-dezembro, 2017259 Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

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Section: Resultssupporting

confidence: 85%

“…Resultados semelhantes aos encontrados para CR 35 e CR foram constados por Jost et al (2012). Os autores comprovaram que as relações de chuva-vazão variam em função das espécies que compõem a cobertura vegetal.…”

Section: Resultsunclassified

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Andrade

Costa²,

Santos³

et al. 2017

AGRO@MBIENTE ON-LINE

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“…A strong root system of seabuckthorn not only can ensure its survival rate under multiple pressures such as a rigorous climate and poor soil conditions, but it can also help to improve the properties of the soil surface (Gyssels et al, 2005;de Baets et al, 2007;Yang et al, 2013). This is believed to be an important means for rainwater infiltration enhancement and flood reduction (Jost et al, 2012;Tesfuhuney et al, 2013). Third, surface roughness among plant species differs.…”

Section: Effects Of Plant Species and Morphological Features On Surfamentioning

confidence: 99%

Effects of surficial condition and rainfall intensity on runoff in a loess hilly area, China

Wei

Jia

Yang

et al. 2014

Journal of Hydrology

100

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“…The reason is that the measured outflow integrates the heterogeneous hydrological response of the soil in the hillslope, which can be governed by flow through the spatially and temporally variable soil macropores (Beven and Germann, 2013;Chappel, 2010). The primary role of the macropores in determining timing, peak and volume of the generated subsurface flow has been demonstrated in different large-scale investigations, that were primarily carried out in humid or temperate climates (Anderson et al, 2009;Dusek et al, 2012;Jost et al, 2012;Uchida et al, 2004). For example, Anderson et al (2009) found that the hydraulic connectivity of the preferential flow network at the hillslope scale was an important factor governing subsurface flow, and they were able to determine relationships between lateral flow, hillslope length and various storm indicators.…”

Section: Introductionmentioning

confidence: 99%

Subsurface flow and large-scale lateral saturated soil hydraulic conductivity in a Mediterranean hillslope with contrasting land uses

Pirastru

Bagarello

Iovino

et al. 2017

Journal of Hydrology and Hydromechanics

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The lateral saturated hydraulic conductivity,Ks,l, is the soil property that mostly governs subsurface flow in hillslopes. Determinations ofKs,lat the hillslope scale are expected to yield valuable information for interpreting and modeling hydrological processes since soil heterogeneities are functionally averaged in this case. However, these data are rare since the experiments are quite difficult and costly. In this investigation, that was carried out in Sardinia (Italy), large-scale determinations ofKs,lwere done in two adjacent hillslopes covered by a Mediterranean maquis and grass, respectively, with the following objectives: i) to evaluate the effect of land use change onKs,l, and ii) to compare estimates ofKs,lobtained under natural and artificial rainfall conditions. HigherKs,lvalues were obtained under the maquis than in the grassed soil since the soil macropore network was better connected in the maquis soil. The lateral conductivity increased sharply close to the soil surface. The sharp increase ofKs,lstarted at a larger depth for the maquis soil than the grassed one. TheKs,lvalues estimated during artificial rainfall experiments agreed with those obtained during the natural rainfall periods. For the grassed site, it was possible to detect a stabilization ofKs,lin the upper soil layer, suggesting that flow transport capacity of the soil pore system did not increase indefinitely. This study highlighted the importance of the experimental determination ofKs,lat the hillslope scale for subsurface modeling, and also as a benchmark for developing appropriate sampling methodologies based on near-point estimation ofKs,l.

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A hillslope scale comparison of tree species influence on soil moisture dynamics and runoff processes during intense rainfall

Cited by 89 publications

References 26 publications

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Plant cover and hydrological response in a seasonally dry tropical forest (SDTF)

Effects of surficial condition and rainfall intensity on runoff in a loess hilly area, China

Subsurface flow and large-scale lateral saturated soil hydraulic conductivity in a Mediterranean hillslope with contrasting land uses

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