王丽娟 王哲 李晓媛 吴利杰 李政红

摘要 通过野外采样和室内分析，采用稳定氢氧同位素、水化学、地下水温度场及电导率结合的方法，研究衡水湖地表水与地下水的交互关系。结果表明，沿垂直湖岸方向，由湖岸向四周，地下水水温逐渐降低，电导率逐渐升高;湖水水化学类型为SO4·Cl-Na型，总溶解固体（TDS）含量为0.70～0.76 g/L;地下水水化学类型以SO4·Cl-Na·Mg、Cl·SO4-Na·Mg和Cl·SO4-Na等为主，近湖点水化学类型与湖水相近。TDS含量普遍大于1 g/L，且近湖点含量较远湖点低;其他地表水体水化学类型为Cl·SO4-Na型，TDS含量普遍大于1 g/L;地下水中稳定同位素（δD、δ18O）空间差异明显，近湖点同位素富集，与湖水含量相近，远湖点贫化。该研究结果表明衡水湖湖水与地下水交互关系为湖水渗漏补给地下水，为进一步探究湖水循环机制奠定理论基础。

关键词 交互关系;湖水;地下水;水化学;稳定同位素;温度场;电导率;衡水湖

中图分类号 P641  文献标识码 A  文章編号 0517-6611（2021）13-0060-04

doi：10.3969/j.issn.0517-6611.2021.13.016

开放科学（资源服务）标识码（OSID）：

Research on Interactive Relationship between Lake Water and Groundwater in Hengshui Lake

WANG Li juan1，2，WANG Zhe1，2，LI Xiao yuan1 et al

（1.China University of Geosciences （Wuhan），Wuhan，Hubei 430074;2. Institute of Hydrogeology and Environmental Geology，CAGS，Shijiazhuang，Hebei 050061）

Abstract Through field sampling and indoor analysis， a combination of stable hydrogen and oxygen isotopes， water chemistry， groundwater temperature field and electrical conductivity were used to study the interactive relationship between surface water and groundwater in Hengshui Lake.The results showed that along the direction of the vertical lakeshore， from the lakeshore to the surrounding areas， the groundwater temperature gradually decreased and the electrical conductivity gradually increased.The main hydrochemical type of the lake water was SO4·Cl Na，and the TDS content was 0.70-0.76 g/L;the main hydrochemical type of the groundwater were SO4·Cl Na·Mg，Cl·SO4 Na·Mg and Cl·SO4 Na which were similar to the hydrochemical type of lake water.TDS content was greater than 1 g/L，and the content of TDS in the near lake was lower than that of in the far lake;the chemical type of other surface water bodies was Cl·SO4 Na， and the TDS content was generally greater than 1 g/L.The spatial difference of stable isotopes （δD，δ18O）in the groundwater was obvious.The near lake point was enriched， and the content was similar to the lake water， and the far lake point was depleted.The results of this study indicate that the interactive relationship between lake water and groundwater in Hengshui Lake was the replenishment of groundwater by lake water leakage， which provide the theoretical basis to further explore the circulation mechanism of lake water.

Key words Interactive relationship;Lake water;Groundwater;Hydrogeo chemistry;Stable isotopes;Temperature fied;Electric conductivity;Hengshui Lake

衡水湖湿地是华北平原面积仅次于白洋淀的第二大淡水湿地。衡水湖湿地生态系统所具有的典型性、代表性以及所支持的生物多样性具有全球意义。然而，近年来面对流域内水资源日益匮乏的形势，衡水湖湿地不可规避地面临水源短缺[1]，湿地面积减少以及水质污染等严峻生态环境问题[2]。尽管如此，衡水湖湿地的生态补水多年以来一直随意性较大，有水多补，无水就少补甚至不补，既浪费水资源又无法起到有效的生态保护作用。产生上述这些问题，归根结底是没有弄清湖水循环机制以及湖水与地下水间的转化关系，无法切实做到科学有效的管理与保护。……