Development and test of a spatially distributed hydrological/water quality model for mesoscale watersheds

Krysanova, Valentina; Müller‐Wohlfeil, D.‐I.; Becker, Alfred

doi:10.1016/s0304-3800(97)00204-4

Cited by 387 publications

(262 citation statements)

References 16 publications

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“…The basic requirement of the hydrotype was that the distribution of land covers and elevations were known and that the hydrotype contributed runoff to a definable stream channel. Krysanova et al (1998) applied a three-level disaggregation scheme to model streamflow and sediment transport within a mesoscale catchment. The disaggregation process involved subdividing the mesoscale catchment into regional-scale sub-catchments.…”

Section: Catchment Regionalisation "Hydrotype" Classification: Progrementioning

confidence: 99%

Regional-scale hydrological modelling using multiple-parameter landscape zones and a quasi-distributed water balance model

Wooldridge

Kalma

2001

Hydrol. Earth Syst. Sci.

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Regional-scale catchments are characterised typically by natural variability in climatic and land-surface features. This paper addresses the important question regarding the appropriate level of spatial disaggregation necessary to guarantee a hydrologically sound consideration of this variability. Using a simple hydrologic model along with physical catchment data, the problem is reconsidered as a model parameter identification problem. With this manner of thinking the subjective nature as to what to include in the disaggregation scheme is removed and the problem reconsidered in terms of what can be supported by the available data. With such an approach the relative merit of different catchment disaggregation schemes is viewed in terms of their ability to provide constrained parameterisations that can be explained in terms of the physical processes deemed active within a catchment. The outlined methodology was tested for a regional-scale catchment, located in eastern Australia, and involved using the quasi-distributed VIC catchment model to recover the characteristic responses resulting from the disaggregation of the catchment into combinations of climate, soil and vegetation characteristics. A land-surface classification based on a combination of soil depth and land cover type was found to provide the most accurate streamflow predictions during a 10-year validation period. Investigation of the uncertainty associated with the predictions due to weakly identified parameters however, revealed that a simpler classification based solely on land cover actually provided a more robust parameterisation of streamflow response. The result alludes to the hydrological importance of distinguishing between forested and non-forested land cover types at the regional-scale, and suggests that given additional information soil-depth / storage considerations may also have proved significant. Improvements to the outlined method are discussed in terms of increasing the informative content available to differentiate between competing catchment responses.

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Section: Catchment Regionalisation "Hydrotype" Classification: Progrementioning

confidence: 99%

Regional-scale hydrological modelling using multiple-parameter landscape zones and a quasi-distributed water balance model

Wooldridge

Kalma

2001

Hydrol. Earth Syst. Sci.

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“…The difference presented by the CRM was almost negligible (between -0.057 and -0.059), indicating a high correlation between the observed and simulated flows by the SWAT model. The COE value between 0.757 and 0.793 also indicates a satisfactory adjustment of the model, according to the criteria proposed by Krysanova et al (1998).…”

Section: Resultsmentioning

confidence: 90%

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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“…O resultado do COE na verificação do modelo para vazão foi de 0,786 diário e 0,889 mensal e o CMR foi de -0,0921. Segundo Krysanova et al (1998), para considerar um bom ajuste do modelo os valores COE devem estar entre 0,7 e 0,8. Conforme descrito anteriormente, tanto para vazão como para produção de sedimentos, os resultados de COE obtidos nas etapas de calibração e verificação foram superiores a 0,8 (mensal), representando assim um ajuste satisfatório do modelo SWAT para a bacia do ribeirão Concórdia.…”

Section: Resultsunclassified

Efeitos de cenários de uso do solo sobre o regime hidríco e produção de sedimentos na bacia do Ribeirão Concórdia - SC

Perazzoli¹,

Pinheiro²,

Kaufmann

2013

Rev. Árvore

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RESUMO -O uso inadequado dos solos agrícolas vem causando a perda gradual da sua capacidade produtiva e a degradação dos recursos hídricos por sedimentos e poluentes. O uso do solo pode afetar os processos hidrológicos e a erosão do solo na bacia. O objetivo do trabalho foi simular diferentes cenários de uso do solo para a bacia hidrográfica do ribeirão Concórdia, utilizando o modelo SWAT, e analisar os efeitos dessas mudanças no fluxo de água e de sedimentos. Os cenários gerados foram agricultura, mata nativa e pastagem. A bacia está localizada no sul do Brasil e possui uma área de drenagem de 30,74 km 2 . Na etapa de calibração, obteve-se coeficente de eficiência Nash-Sutcliffe mensais de 0,82 para escoamento e 0,83 para sedimento. O cenário mata nativa apresentou o maior decréscimo na vazão média, em relação ao cenário atual, cerca de 8,70%. O cenário agricultura produziu a maior taxa de produção de sedimentos, aproximadamente 3 vezes maior que o cenário atual.Observou-se que alterações no uso do solo impactam o regime e a disponibilidade hídrica da bacia.Palavras-chaves: Uso do solo; Modelo SWAT; Regime hídrico. EFFECTS OF SCENARIOS OF LANDUSE ON WATER REGIME AND SEDIMENT TRANSPORT IN THE CONCÓRDIA RIVER BASIN, SC

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Development and test of a spatially distributed hydrological/water quality model for mesoscale watersheds

Cited by 387 publications

References 16 publications

Regional-scale hydrological modelling using multiple-parameter landscape zones and a quasi-distributed water balance model

Regional-scale hydrological modelling using multiple-parameter landscape zones and a quasi-distributed water balance model

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

Efeitos de cenários de uso do solo sobre o regime hidríco e produção de sedimentos na bacia do Ribeirão Concórdia - SC

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