• 责任者：Deng Hui (College of Urban and Environmental Sciences ; Peking University ; Beijing 100871 ; China) ; Luo Xiao
• 刊名：Scientia Geographica Sinica
• 出版年：2011
• 卷期：31(11)
• 关键词：泉 ; springs ; 湖泊 ; lakes ; 北京 ; Beijing
• 页码：p.1355-1361
• 图表：3 illus., 36 refs.
• 分类号：1400
• 出版序号：20122604
• issnNo：ISSN1000-0690
• isbnNo：CN22-1124/P

According to the historical documents, more than one-hundred seepage springs and many small lakes were distributed on the Beijing Plain that was mainly consisted of the Yongding River’s alluvial fans. During the historical time, the underground water table was much higher than today, and a plenty of phreatic water discharged along the hyporheic zone of the toes of alluvial fans as the seepage springs. In the past 100 years, especially in the past 50 years, all the seepage springs once distributed on the alluvial fans vanished, and many lakes that formed upon the Yongding River’s abandoned meanders or ox-bow lakes dried up. This human’s irrational activities led to the rapidly dropping of the water table.