Effect of root zone soil moisture on the SWAT model simulation of surface and subsurface hydrological fluxes

被引：0
|
作者：
Rajat Choudhary
P. Athira
机构：
[1] Indian Institute of Technology Palakkad,Department of Civil Engineering
来源：
Environmental Earth Sciences | 2021年 / 80卷
关键词：
Multi-variable calibration; Soil and water assessment tool; AMALGAM; Spatial prediction; Process representation; Root zone soil moisture;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The current study analyses the effect of root zone soil moisture in the calibration and validation of Soil and Water Assessment Tool (SWAT) model. A multi-algorithm, genetically adaptive multi-objective method (AMALGAM) is used for the calibration of the model. The multi-variable calibration considering both streamflow and soil moisture is compared with a single-variable calibration considering streamflow and then analysed the effectiveness of root zone soil moisture in the calibration of SWAT. The results of the analysis show that the root zone soil moisture significantly influences the simulation of evapotranspiration component in SWAT. The SOL_AWC and SOL_K are found to be the key parameters for the simulation of hydrological fluxes in SWAT. The multi-variable calibration at the watershed outlet ensures a better process representation and spatial prediction in SWAT compared to the single-variable calibration approach.
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