| Title: | Influence of land use change on hydrological cycle: Application of SWAT to Su-Mi-Huai Area in Beijing, China |
| Authors: | Zhang, L., C. Wang, G. Liang, Y. Cui and Q. Zhang |
| Year: | 2020 |
| Journal: | Water |
| Volume (Issue): | 12(11) |
| Pages: | |
| Article ID: | 3164 |
| DOI: | 10.3390/w12113164 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic only |
| Primary Application Category: | land use change assessment |
| Secondary Application Category: | model and/or data interface |
| Watershed Description: | 1,078 km^2 Su-Mi-Huai drainage area, located in the northeast part of the Beijing Municipality Province in northeast China. |
| Calibration Summary: | |
| Validation Summary: | |
| General Comments: | |
| Abstract: | The human activities and urbanization process have changed the underlying surface of
urban areas, which would affect the recharge of groundwater through rainfall infiltration and may
further influence the groundwater environment. Accordingly, it is imperative to investigate the
variation of hydrological cycle under the condition of underlying surface change. Based on the
high-precision remote sensing data of 2000, 2005, 2010 and 2015, and Soil and Water Assessment
Tool (SWAT) model, this work firstly studied the land use change and the corresponding changes in
runoff generation mechanism and rainfall infiltration coefficient in Su-Mi-Huai area, Beijing, China.
Meanwhile, SWAT-MODFLOW semi-loose coupling model was applied to analyze the water balance
in the study area in typical hydrological years. The results showed that the area of the construction
land (urban and rural residential land) increased by 1.04 times from 2000 to 2015, which is mainly
attributed to the conversion of cultivated land to construction land in the plain area. This change
caused the runoff in the area to increase by 7 106 m3, the runoff coefficient increased by 17.9%,
and the precipitation infiltration coefficient was less than the empirical value determined by lithology.
Compared with 2000, the average annual precipitation infiltration coefficient in 2018 decreased by 6.5%.
Under the influence of urbanization process, the maximum reduction rate of precipitation infiltration
recharge is up to 38%. The study investigated the response of surface runoff and precipitation
infiltration recharge to land use change, which can provide helps for water resources managers to
coordinate the relationship between land use change and rational water resources planning. |
| Language: | English |
| Keywords: | land use change; precipitation infiltration coefficient; SWAT model; runoff |