Sensitivity analysis for hydrology and pesticide supply towards the river in SWAT

Holvoet, Katrijn; Griensven, Ann van; Seuntjens, Piet; Vanrolleghem, Peter A.

doi:10.1016/j.pce.2005.07.006

Cited by 199 publications

(107 citation statements)

References 13 publications

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“…Other sensitive parameters are Gwqmn, Sol Awc and rchrg dp. This results are in agreement with those by Arnold et al (2000), Spruill et al (2000), White and Chaubey (2005), Holvoet et al (2005), Van Griensven et al (2006), and Kannan et al (2007). Table 7 shows the sensitive parameters obtained in the referred studies.…”

Section: Soil and Water Assessment Tool Swatsupporting

confidence: 91%

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Modelling the hydrologic response of a mesoscale Andean watershed to changes in land use patterns for environmental planning

Stehr¹,

Aguayo²,

Link³

et al. 2010

Hydrol. Earth Syst. Sci.

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Abstract. A multidisciplinary approach is followed for analysis of the effect of changes in land use patterns on the hydrologic response of the Vergara watershed (4340 km 2 ) located in central Chile. Probable future land use scenarios were generated using heuristic rules and logistic regression models, in order to identify and represent the main pressure on the watershed, namely forestation of extensive areas used for agriculture with rapid growing exotic species. The hydrologic response of the watershed was computed with a physically based distributed precipitation-runoff model, which was calibrated and validated for the current period. Results show that mean annual discharge increase with agricultural land use and diminish with introduced forest coverage. Thus, forestation of areas with introduced species like Pinus radiata and Eucalyptus globulus might be regulated in order to protect the water resources of the watershed.

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Section: Soil and Water Assessment Tool Swatsupporting

confidence: 91%

“…The SCS CN method has been extensively tested and modified in order to represent local conditions. For details, please refer to Iroumé et al (1999), Saavedra and Stowhas, (2003), Stowhas (2003) and Pizarro et al (2006).…”

Section: Soil and Water Assessment Tool Swatmentioning

confidence: 99%

Modelling the hydrologic response of a mesoscale Andean watershed to changes in land use patterns for environmental planning

Stehr¹,

Aguayo²,

Link³

et al. 2010

Hydrol. Earth Syst. Sci.

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show abstract

“…Parameter sensitivity analysis provides insights as to which parameters contribute most to the output variance due to input variability (Holvoet et al, 2005). It is important and advisable for SWAT calibration.…”

Section: Sensitivity Analysismentioning

confidence: 99%

Effects of temperature change on water discharge, and sediment and nutrient loading in the lower Pearl River basin based on SWAT modelling

Chen

Wang

et al. 2011

Hydrological Sciences Journal

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The impact of climate change on hydrological processes and nutrient input is one of the major uncertainties in projecting future global warming. The Soil and Water Assessment Tool (SWAT) model is applied to simulate the effects of temperature on the hydrology and sediment and nutrient load in the lower Pearl River Basin, South China. Calibration and validation results for SWAT showed that the Yamen estuary is appropriate for simulating the impacts of temperature change on both hydrological processes and nutrient input. The possible temperature change scenarios were set at T-2, T-1.5, T-1, T-0.5, T+0.5, T+1, T+1.5, T+2, T+2.5, T+3 • C compared to the current temperature, T• C. The results showed that the relative variation of discharge with temperature was slight. The sediment load at T+3• C is increased by 13.58% compared to that at T • C. Inorganic N and P inputs to the Yamen estuary showed an increasing trend with the temperature increase from T-2• C to T+3 • C. Global warming can reduce the vegetation land cover by slowing plant growth, which will aggravate the water and soil loss. Temperature changes would have an effect on mineralization and nitrification by changing soil temperature and temperatures. The warming is projected to cause an increase of sediment and nutrient load into the estuary and accelerate eutrophication in the coastal area.

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“…Este método permite uma estimativa eficiente das estatísticas de saída eliminando a necessidade de inúmeras simulações (SALTELLI et al, 2000;HOLVOET, 2005). Na amostragem estratificada um conjunto (x1, x2,..., x N ) de dimensão n é gerado a partir de uma distribuição acumulada dos valores Aplicação do Modelo Swat na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio Pará, Alto São Francisco, em Minas Gerais…”

Section: Materiaisunclassified

“…O LH-OAT proporciona classificações de sensibilidade com base nos efeitos finais. Assim, a sensibilidade do modelo é avaliada em toda a faixa viável através de um número de diferentes valores para outros parâmetros do modelo, incorporando assim uma quantidade limitada de interações (HOLVOET, 2005).…”

Section: Evandro Luís Rodrigues Marcos Antônio Timbó Elmiro Claudiaunclassified

Aplicação do modelo SWAT na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio pará, Alto São Francisco, em Minas Gerais

et al. 2015

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RESUMO:As florestas são de grande importância para o equilíbrio do ciclo hidrológico. Existe, porém, uma discussão acerca de que plantações florestais aumentam exageradamente o consumo de água das bacias hidrográficas, especialmente, se as plantações substituem vegetação original de porte menor como é o caso do cerrado. Este estudo teve por objetivo investigar a influência dos reflorestamentos na manutenção e no equilíbrio do ciclo hidrológico na bacia do Rio Pará, utilizando o modelo hidrológico SWAT. Os resultados evidenciam a eficiência da modelagem ambiental como método a fim detectar impactos no balanço hídrico decorrentes de alterações da cobertura vegetal. O diagnóstico revelou uma redução no consumo de -4,26% no cenário de mata nativa, -9,68% no cenário de reflorestamento médio e -11,59% no reflorestamento intenso. A curva de permanência sugere a existência de grandes armazenamentos naturais indicando um alto grau de resiliência do comportamento hidrológico. Além dos efeitos da cobertura vegetal, os resultados também indicam uma estreita influência exercida pelas variáveis físicas e climáticas na governança sobre a produção hídrica da bacia. Os resultados gerados pelo modelo SWAT foram

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Sensitivity analysis for hydrology and pesticide supply towards the river in SWAT

Cited by 199 publications

References 13 publications

Modelling the hydrologic response of a mesoscale Andean watershed to changes in land use patterns for environmental planning

Modelling the hydrologic response of a mesoscale Andean watershed to changes in land use patterns for environmental planning

Effects of temperature change on water discharge, and sediment and nutrient loading in the lower Pearl River basin based on SWAT modelling

Aplicação do modelo SWAT na avaliação do consumo de água em áreas de florestas plantadas na bacia do rio pará, Alto São Francisco, em Minas Gerais

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