Impact of land use change on groundwater recharge in Guishui River Basin,China |
| |
| Authors: | Yun Pan Huili Gong Demin ZHou Xiaojuan Li Nobukazu Nakagoshi |
| |
| Institution: | the State Laboratory of Urban Environmental Processes and Digital Modeling,Capital Normal University,Beijing 100048,China;2.Beijing Key Laboratory of Resources Environment and GIS,Capital Normal University,Beijing 100048,China;3.Graduate School for International Development and Cooperation,Hiroshima University,Higashi-Hiroshima 739-8529,Japan) |
| |
| Abstract: | It is important to understand how land use change impacts groundwater recharge, especially for regions that are undergoing
rapid urbanization and there is limited surface water. In this study, the hydrological processes and recharge ability of various
land use types in Guishui River Basin, China (in Beijing Municipality) were analyzed. The impact of land use change was investigated
based on water balance modeling, WetSpass and GIS. The results indicate that groundwater recharge accounts for only 21.16%
of the precipitation, while 72.54% is lost in the form of evapotranspiration. The annual-lumped groundwater recharge rate
decreases in the order of cropland, grassland, urban land, and forest. Land use change has resulted in a decrease of 4 × 106 m3 of yearly groundwater recharge in the study area, with a spatially averaged rate of 100.48 mm/yr and 98.41 mm/yr in 1980
and 2005, respectively. This variation has primarily come from an increase of urban area and rural settlements, as well as
a decrease of cropland. |
| |
| Keywords: | |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
|
