• 责任者：Zhu Lin (College of Resource Environment and Tourism ; Capital Normal University ; Beijing 100048 ; China) ; Liu Chang
• 刊名：Earth Science
• 出版年：2013
• 卷期：38(5)
• 页码：p.1065-1072
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

The WetSpass model is used to analyze the impact of urbanization on precipitation infiltration recharge in Beijing Plain combined with the technology of GIS（geographic information system）and RS（remote sense）in this paper.Based on the simulated precipitation infiltration in 1982and 2007,the influence of land use changing on the precipitation infiltration is quantitatively analyzed by assuming the land-use type in 2007was the same as that in 1982,and re-running WetSpass model with other input data in 2007.The transfer matrix is used to analyze the mutual transformation relationship of land-use types in the above-mentioned two years,and the statistical function of GIS is used to calculate the groundwater recharge under different land-use types.Results show that the area of irrigable land decreased by 874km2 from 1982to 2007,among which 517km2 turned to the central urban land.The central urban area increased by about 831km2.The increasing urban area and the decreasing crop area eventually lead to the reduction of the average groundwater recharge.The groundwater recharge decreased by about 3×107 m3 in 2007compared with the value under the simulated condition.The precipitation infiltration changed obviously in the region around Chaoyang and Fengtai districts characterized by significant urban expansion.This study can be a scientific reference for the groundwater resources protection and city layout of Beijing Plain.