Attribution Analysis of Runoff Change in Min-Tuo River Basin based on SWAT model simulations, China

Hu, Jian; Ma, Jie; Nie, Chao; Xue, Lianqing; Yang, Zili; Ni, Fuquan; Deng, Yu; Liu, Jinshan; Zhou, De Qun; Li, Linhuan; Wang, Zhigang

doi:10.1038/s41598-020-59659-z

Cited by 37 publications

(20 citation statements)

References 52 publications

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“…1 ). It originates from Jiuding mountain in Mianzhu City and flows through the Chengdu Plain with a total length of 712 km and a drainage area of 32,900 km 2 25 . The climate of Tuojiang River catchment is subtropical monsoon climate, with an annual average temperature of 17.1 °C, an annual average flow of 35.1 × 10 8 m 3 and average precipitation of 1050 mm.…”

Section: Study Areamentioning

confidence: 99%

Using stable isotopes as tracer to investigate hydrological condition and estimate water residence time in a plain region, Chengdu, China

Zhou

Liu

Meng

et al. 2021

Sci Rep

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The oxygen and hydrogen isotopic compositions (δ18O and δ2H) were measured on river water and precipitation collected from four sub-catchments within the upper Tuojiang River catchment. δ18O values of river water and precipitation exhibit significant seasonal variations. These seasonal variations are used for estimating the mean residence time (MRT) for four sub-catchments by an exponential model, ranging from 346 to 493 days. The correlation between catchment MRT and mean slope of the catchment (r2 = 0.29) is weak, while the correlations between catchment MRT, catchment area (r2 = 0.79) and topographic index (r2 = 0.98) are strong. These results indicate that topography and catchment area, both control the catchment MRT and the topographic index may be a reliable parameter for estimating the catchment MRT. Moreover, the relationship between land use types and MRT was investigated. The results show that paddy fields (r2 = 0.95) compared to the other land use types may have a greater impact on the MRT of the irrigation-dominated catchment. This study provides a preliminary exploration of the factors affecting MRT in the plain region and a basis for simulating MRT in the future.

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Section: Study Areamentioning

confidence: 99%

Using stable isotopes as tracer to investigate hydrological condition and estimate water residence time in a plain region, Chengdu, China

Zhou

Liu

Meng

et al. 2021

Sci Rep

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“…The SWAT model exhibited a better performance (Figure 2) during the period prior to reservoir management being introduced in 1993. Restriction of reservoir management data to the public or researchers is a common issue for many transboundary basins in developing and less developed countries [60], and further information is needed to improve the SWAT modelling in the regulated flow period. This study demonstrates that adding some basic reservoir and water supply information along with reservoir parameter calibration improved the SWAT capability in regulated flow simulation period.…”

Section: Discussionmentioning

confidence: 99%

Resolution Dependence of Regional Hydro-Climatic Projection: A Case-Study for the Johor River Basin, Malaysia

Tan

Liang

Hawcroft

et al. 2021

Water

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High resolution models from the High-Resolution Model Intercomparison Project (HighResMIP), part of CMIP6, have the capacity to allow a better representation of the climate system in tropical regions, but how different model resolutions affect hydrological outputs remains unclear. This research aims to evaluate projections of hydro-climatic change of the Johor River Basin (JRB) in southern Peninsular Malaysia between 1985 to 2015 and 2021 to 2050, focusing on uncertainty quantification of hydrological outputs from low (>1°), medium (0.5° to 1°) and high (≤0.5°) horizontal resolution models. These projections show future increases in annual precipitation of 0.4 to 3.1%, minimum and maximum temperature increases of 0.8 to 0.9 °C and 0.9 to 1.1 °C, respectively. These projected climate changes lead to increases in annual mean streamflow of 0.9% to 7.0% and surface runoff of 7.0% to 20.6% in the JRB. These annual mean changes are consistent with those during the wet period (November to December), e.g., streamflow increases of 4.9% to 10.8% and surface runoff of 28.8 to 39.9% in December. Disagreement in the direction of change is found during the dry seasons, (February to March and May to September), where high resolution models project a decrease in future monthly precipitation and streamflow, whilst increases are projected by the medium- and low-resolution models.

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“…The SWAT model, developed by the Agricultural Research Center of the US Department of Agriculture, is a physically-distributed hydrological model applied at the watershed scale [27,28]. Hydrological simulation in the SWAT model mainly involves two parts.…”

Section: Swat Modelmentioning

confidence: 99%

Impacts of Climate Change and Human Activity on the Runoff Changes in the Guishui River Basin

Wang

Shao

Jiang

et al. 2020

Land

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Guishui River Basin in northwestern Beijing has ecological significance and will be one of the venues of the upcoming Beijing Winter Olympic Games in 2022. However, accelerating climate change and human disturbance in recent decades has posed an increasing challenge to the sustainable use of water in the basin. This study simulated the runoff of the Guishui River Basin using the Soil and Water Assessment Tool (SWAT) model to reveal the spatio-temporal variations of runoff in the basin and the impacts of climate change and human activities on the runoff changes. The results showed that annual runoff from 2004 to 2018 was relatively small, with an uneven intra-annual runoff distribution. The seasonal trends in runoff showed a decreasing trend in spring and winter while an increasing trend in summer and autumn. There was a first increasing and then decreasing trend of average annual runoff depth from northwest to southeast in the study area. In addition, the contributions of climate change and human activities to changes in runoff of the Guishui River Basin were 60% and 40%, respectively, but with opposite effects. The results can contribute to the rational utilization of water resources in the Guishui River Basin.

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Attribution Analysis of Runoff Change in Min-Tuo River Basin based on SWAT model simulations, China

Cited by 37 publications

References 52 publications

Using stable isotopes as tracer to investigate hydrological condition and estimate water residence time in a plain region, Chengdu, China

Using stable isotopes as tracer to investigate hydrological condition and estimate water residence time in a plain region, Chengdu, China

Resolution Dependence of Regional Hydro-Climatic Projection: A Case-Study for the Johor River Basin, Malaysia

Impacts of Climate Change and Human Activity on the Runoff Changes in the Guishui River Basin

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