【作者】 陈皓锐； 高占义； 黄介生； 王少丽；

【Author】 Chen Haorui~1,Gao Zhanyi~2,Huang Jiesheng~1,Wang Shaoli~2 (1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wu Han University,Wu Han 430072,China;2.China Institute of Water Resources and Hydropower Research3eijing 100048,China;)

【机构】 武汉大学水资源与水电工程科学国家重点实验室； 中国水利水电科学研究院水利研究所；

【摘要】 利用多种统计方法分析了运动平原区潜水位、降雨、蒸发和温度长系列序列的趋势性、突变性和周期性,结果表明气候因子与潜水位近40a来的显著下降趋势无直接关系,降雨和潜水位在周期性和突变性上吻合,表明降雨是影响潜水位变化的重要因素,蒸发和温度与潜水位在周期性和突变性上有一定偏差,说明蒸发和温度对潜水位影响较小。1976年以来地下水的利用历史和降雨-浅层抽水量-潜水位同步关系分析表明潜水位和浅层抽水量与降水量的丰枯交替相关密切,降雨是诱发人类活动改变和潜水位变化的重要因素。利用Morlet基小波对潜水位和降雨进行多时间尺度分析表明两者在6-10年周期段和12-20年周期段内的部分时间尺度相关关系较好,降雨对浅埋区和河道附近潜水位影响比例在25%-30%之间,在深埋区影响比例仅10%左右,降雨影响比例受潜水埋深、降雨量大小和人类活动强度影响。更多还原

【Abstract】 Statistical characteristics such as tendency,aberrance and periodicity of precipitation,evaporation,temperature and shallow groundwater level(SGL)in Yundong Plain are analyzed in this paper.The results show that climatic factors have no direct relevance with significant decrease of SGL in recent forty years.But beyond that,the precipitation is identical with SGL in aberrance and periodicity,while evaporation and temperature are not.This is a clear indication of the connection between precipitation and SGL,yet evaporation and temperature have slightly influence in SGL.The historic development of groundwater utilization from 1976 to 2008 and synchronization relationship among precipitation,discharge of groundwater and SGL denote the precipitation has placed a premium on the change of human activities and SGL.Further,unexceptionable correlation between precipitation and SGL at some time-scale in the period of six to ten years,as well as twelve to twenty years,is observed by multiple time-scale analysis with Morlet wave.The influential weight coefficient(IWC)of precipitation to SGL is affected by the depth of SGL, the quantity of rainfall as well as human activity intensity,thus leading to 25%to 30%of IWC in the zones around river or with relative small groundwater depth,while approximate 10%in the area with deeper groundwater depth.更多还原