Spatial characteristics of water quality, stable isotopes and tritium associated with groundwater flow in the Hutuo River alluvial fan plain of the North China Plain
Spatial characteristics of water quality, stable isotopes and tritium associated with groundwater flow in the Hutuo River alluvial fan plain of the North China Plain
复制标题
DOI：
10.1007/s10040-008-0292-3
复制
发表时间：
2008-04
影响因子：
2.8
通讯作者：
Yin-tao Lu;C. Tang;Jianyao Chen;Xianfang Song;Fadong Li;Y. Sakura
中科院分区：
文献类型：
--
作者：
Yin-tao Lu;C. Tang;Jianyao Chen;Xianfang Song;Fadong Li;Y. Sakura
本文研究了滹沱河冲积扇平原地下水流系统和流速，着重探讨了地下水的地球化学特征和同位素因素。调查了一条河流、六个泉水和31口威尔斯井的七个延伸段，深度从0 m（河流沃茨）到150 m不等。地下水具有垂直双层结构，边界约在80-100米深，形成上下两层地下水层。δ 18 O和δD值分别为−10.56至−7.05‰和−81.83至−59‰。地下水由降水补给，在渗入上层含水层的过程中没有发生明显的蒸发。利用氚模型，在冲积扇平原地下水流表现出水平流速大于垂直流速。上层地下水以Ca-HCO 3型为主。从地下水稳定同位素和化学成分的空间分布特征来看，农业灌溉对含水层的影响主要表现为过量抽取地下水和灌溉回流。
The groundwater flow system and the flow velocity in the alluvial fan plain of the Hutuo River, China, have been studied, with an emphasis on relating geochemical characteristics and isotopes factors. Seven stretches of one river, six springs and 31 wells, with depths ranging from 0 m (river waters) to 150 m, were surveyed. The groundwater has a vertical two-layer structure with a boundary at about 80–100 m depth, yielding an upper and a lower groundwater layer. The δ18O and δD values range from −10.56 to −7.05‰ and −81.83 to −59‰, respectively. The groundwater has been recharged by precipitation, and has not been subjected to significant evaporation during infiltration into the aquifer in the upper layer. Using a tritium model, the groundwater flow in the alluvial fan plain showed horizontal flow velocity to be greater than vertical velocity. Groundwater in the upper layer is characterized by Ca–HCO3type. From the spatial distribution characteristics of the stable isotope and chemical composition of the groundwater, agricultural irrigation was considered to have an influence on the aquifer by causing excessive groundwater abstraction and irrigation return.