华北平原地下水生态环境水位研究

A STUDY ON THE ECOLOGICAL GROUNDWATER TABLE IN THE NORTH CHINA PLAIN

华北平原地下水合理生态水位的上限为防止土壤盐碱化水位,下限为地下水获得最大补给的理想水位。研究表明,华北平原防治土壤盐碱化地下水位埋深一般为2～2.5m,有利于获得最大补给的地下水位埋深在山前平原为10m左右,中东部平原为3～5m。

In the North China Plain the overexploitation and utilization of groundwater has resulted in a series of geoecological problems, such as land salinization, soil desiccation, and seawater intrusion and so on. These ecoenvironmental problems relate to groundwater table, so this paper mainly discusses the ecological groundwater level in the North China Plain. The upper limit of the reasonable ecological groundwater burial depth is about 2.0～2.5 m for prevention and cure of soil salinization, and the lower limit is about 10 m for gaining maximum recharge from precipitation in alluvium plain and about 3～5 m in the middleeast plain of the North China Plain. 