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Performance Evaluation and Comparison of SWAT Model-PredictedPotential Trends in Sub-Ping Watershed, Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Banchongsak Faksomboon 2. Siraprapha polthana |
| Title | Performance Evaluation and Comparison of SWAT Model-PredictedPotential Trends in Sub-Ping Watershed, Thailand |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2566 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 16 |
| Journal No. | 2 |
| Page no. | 35-47 |
| Keyword | SWAT Model, Potential Evapotranspiration, Actual Evapotranspiration, Watershed |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | Evapotranspiration (ET) is an important factor used in hydrological models as well as in themanagement of irrigation projects and water balance estimations. An essential instrumentfor the effective management of water resources is the hydrological model. An importantfactor in linking the energy, water, and carbon cycle in terrestrial ecosystems on a localto a global scale is ET, which creates dynamic interfaces between the ground surface andthe lower atmosphere. The performance of the soil and water assessment tool (SWAT)model for the performance evaluation and comparison of potential evapotranspiration(PET) and actual evapotranspiration (AET) of the sub-Ping watershed (SPW) inThailand. The MapWindow SWAT model was created using spatial and meteorologicaldata. Using soil, topography, land use and land cover (LULC), and meteorological dataas input factors, the three existing methods Penman-Monteith (PM), Priestly-Taylor(PT), and Hargreaves (HA) were utilized for the evaluation of PET and AET. Theresults showed that the predicted average PET values for PM, PT, and HA methodswere 1,146.43, 1,124.69, and 1,200.20 mm/year with corresponding standard deviationvalues of 106.58, 53.27, and 105.90 mm/year, respectively. Furthermore, the averageAET values for PM, PT, and HA methods were 652.97, 655.13, and 669.85 mm/year withcorresponding standard deviation values of 76.95, 81.28, and 73.24 mm/year, respectively.In conclusion, the analysis indicated that PM and HA methods yielded similar results,while the PT method slightly differs. The study could be beneficial to watershed managersin addressing water-related problems and for sustainable water resource management. |
