| Title: | Deveopment of Soil and Water Assessment Tool Model on Human Water Use and Application in the Area of High Human Activites, Tianjin, China |
| Authors: | Sang, X., Z. Zhou, H. Wang, D. Qin, Z. Zhai and Q. Chen |
| Year: | 2010 |
| Journal: | Journal of Irrigation and Drainage Engineering |
| Volume (Issue): | 136(1) |
| Pages: | 23-30 |
| Article ID: | |
| DOI: | 10.1061/(ASCE)IR.1943-4774.0000115 |
| URL (non-DOI journals): | |
| Model: | SWAT (modified) |
| Broad Application Category: | hydrologic only |
| Primary Application Category: | irrigation impacts or irrigation BMP scenarios |
| Secondary Application Category: | hydrologic assessment |
| Watershed Description: | 11,920 km^2 Tianjin basin in northwest China |
| Calibration Summary: | |
| Validation Summary: | |
| General Comments: | |
| Abstract: | The basin water cycle affected by human activities presents the duality of natural and
human characteristics. The effect of human activities to hydrology is becoming point of focus in
the world with the development of society. As a physically based distributed parameter model,
Soil and Water Assessment Tool (SWAT) is deficient when applied to the area with more human
activities. In areas of increased activities, monthly changes in irrigation and consumptive water
use has been observed over the years. In the past, this module was applied to a system with very
little human influence. In this study we revised the theory and made appropriate improvement on
irrigation module and consumptive water use module in order to apply it to the water system in
Tianjin city, China, where water cycle is strongly affected by the human activities. The watershed
model has been calibrated and validated using measured data available for the main river. By
comparing the simulation results between initial model and improved model, the Nash-Sutcliffe
Efficiency (Ens) is adjusted from 0.62 to 0.89 and correlation coefficient is improved from 0.79 to
0.91. The resulting validated model improves the simulation precision, especially amends the peak
value of runoff, and adequately describes the impact of consumptive water use and irrigation on
the natural water cycle. The model developed in this paper can be used to study water resource
and water environment management in area of high human activities. |
| Language: | English |
| Keywords: | SWAT; Hydrological modeling; High human activities; Consumptive water use;
Irrigation |