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通过对大量的野外资料分析,发现华北平原浅层地下水位最大埋深已达65m,埋深大于10m的区域面积占全区总面积的44.4%,浅层地下水降落漏斗串珠状分布于太行山和燕山山前平原的工业城市;深层地下水位最大埋深达110m,埋深大于40m分布区面积占总面积的43.1%,形成了华北平原复合漏斗,面积占52.6%。通过对20世纪50年代至今降水量减少、河道渗漏量减少和地下水开采量增加的变化分析,发现地下水位下降和漏斗的形成与人类开采地下水和降水量持续减少密切相关,通过采用关联度计算分析,认为人类开采地下水是区域地下水位下降的主导因子。
Based on a large amount of field data, it is found that the maximum depth of shallow groundwater table in the North China Plain has reached 65m, and the area covered by more than 10m occupies 44.4% of the total area. The shallow groundwater funnels are distributed in the beacons of Taihang and Yanshan Piedmont plain industrial city; the maximum depth of deep water table buried depth of 110m, depth of more than 40m distribution area accounted for 43.1% of the total area, forming a composite funnel in North China Plain, an area of 52.6%. Through the analysis of the decrease of precipitation, the reduction of river seepage and the increase of groundwater exploitation from the 1950s to the present, it is found that the decline of groundwater level and the formation of funnel are closely related to the continuous decrease of groundwater and precipitation in human exploitation. By using the correlation degree calculation Analysis, that human exploitation of groundwater is the dominant factor in the regional groundwater level decline.