摘要
对海河流域源区的丰、枯水期降水、地下水、河水进行取样测试,分析了海河源区不同水体氢氧稳定同位素组成及水化学的时空分布特征,同时运用同位素二元混合模型对典型采样点地表水地下水间的相互作用进行了定量分析。结果表明：（1）丰水期地下水及地表水δD和δ18O及总溶解性固体（TDS）表现出显著的空间差异性,而枯水期只有地下水的同位素组成及水化学特性表现出空间差异。（2）研究区的地下水水化学类型以Ca-HCO3·SO4、Ca-HCO3型为主,丰水期河水与地下水化学类型较为相似,枯水期地下水化学类型与同时期的河水及大气降水的水化学类型存在显著的差异,说明枯水期地表水与地下水之间的转化关系不明显。Gibbs分析结果表明,控制海河源区水体化学性质的主要影响为岩石风化作用。（3）枯水期地下水受其他水体影响较弱,而丰水期河水及大气降水对地下水具有显著的补给作用,3个源流区中西源的地表河水对地下水影响最显著。
The surface water and groundwater are very important for the farmland irrigation, industrial production and living water. Normally, there is transformation relationship between the surface water and groundwater. The mechanism of transformation relationship between surface water and shallow groundwater is a key factor role for the regional water cycle and the formation and management of water recourse. The Haihe River is an important river of the northern China. The water crisis caused by over exploitation for the groundwater has become the most important limiting factor for the development of the regional economy. This research based on the δ18 O, δD and chemical data of different water samples of two sampling events were collected from the southern upstream of the Haihe River Basin（headstream of the Zhanghe River）. We analyzed the hydrochemical and isotopic characteristic of groundwater and surface water during the two seasons by using the methods of study statistics, spatial interpolation analysis, Gibbs and Piper third-line graphs. Based on the two element mixed isotope hydrology separate model, we quantitative analysis the transformation relationship between groundwater and surface water for some sampling sites. The results shown that： 1） δ18 O, δD and TDS of groundwater and surface river water samples of the headstream of Zhanghe River during wet season have significant variation. However, in the dry season, only the δ18 O, δD and TDS of groundwater show the significant variation. 2） Whether wet season or dry season, the mainly water type are the Ca-HCO3·SO4 and the Ca-HCO3 for the shallow groundwater in the headstream of the Zhanghe River of upstream of the Haihe River Basin.The river water chemical type has significant season variation. The water type of river water were Ca-HCO3 changed to Na-Cl type during wet season, in wet season, due to the stronger evaporation, the river water chemical type were Ca.Na-Cl type. In wet season, the water type of river water and groundwater are similar an
作者
孙从建
陈伟
Sun Congjian;Chen Wei(School of Geographical Science, Shanxi Normal University, Linfen 041000, Shanxi, China)
出处
《地理科学》
CSSCI
CSCD
北大核心
2018年第5期790-799,共10页
Scientia Geographica Sinica
基金
中国科学院农业水资源重点实验室开放基金(KFKT201601)
中国博士后科学基金项目(2016M590989)资助~~
关键词
环境同位素
水化学
海河流域源区
地下水地表水转化
stable isotope
hydrochemical
the Haihe River Basin
transformation between groundwater and river water
