SWAT Literature Database for Peer-Reviewed Journal Articles

Title:The application of improved SWAT model to hydrological cycle study in karst area of south China 
Authors:Wang, Y., J. Shao, C. Su, Y. Cui and Q. Zhang 
Volume (Issue):11(18) 
Article ID:5024 
URL (non-DOI journals): 
Model:SWAT (modified) & SWAT 
Broad Application Category:hydrologic only 
Primary Application Category:karst effects 
Secondary Application Category:model and/or data comparison 
Watershed Description:Xianghualing area, Located in the northern part of Linwu County in the southern part of Hunan Province in south central China. 
Calibration Summary: 
Validation Summary: 
General Comments: 
Abstract:In the karst area of southern China, karst water is important for supporting the sustainable production and home living for the local residents. Consequently, it is of significance to fully understand the water cycle, so as to make full use of water resources. In karst areas, epikarst and conduits are developed, participating in the hydrological cycle actively. For conventional lumped hydrologic models, it is difficult to simulate the hydrological cycle accurately. These models neglect to consider the variation of underlying surface and weather change. Meanwhile, for the original distributed hydrological model, the existence of epikarst and underground conduits as well as inadequate data information also make it difficult to achieve accurate simulation. To this end, the framework combining the advantages of lumped model–reservoir model and distributed hydrologic model–Soil and Water Assessment Tool (SWAT) model is established to simulate the water cycle efficiently in a karst area. Xianghualing karst watershed in southern China was selected as the study area and the improved SWAT model was used to simulate the water cycle. Results show that the indicators of ENS and R2 in the calibration and verification periods are both above 0.8, which is evidently improved in comparison with the original model. The improved SWAT model is verified to have better efficiency in describing the hydrological cycle in a typical karst area. 
Keywords:karst area; lumped hydrological model; distributed hydrological model; improved SWAT model