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The interaction between surface water and groundwater and its effect on water quality in the Second Songhua River basin, northeast China

机译：第二松花江流域地表水与地下水的相互作用及其对水质的影响

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The relationship between surface water and groundwater not only influences the water quantity, but also affects the water quality. The stable isotopes (delta D, delta O-18) and hydrochemical compositions in water samples were analysed in the Second Songhua River basin. The deep groundwater is mainly recharged from shallow groundwater in the middle and upper reaches. The shallow groundwater is discharged to rivers in the downstream. The runoff from upper reaches mainly contributed the river flow in the downstream. The CCME WQI indicated that the quality of surface water and groundwater was 'Fair'. The mixing process between surface water and groundwater was simulated by the PHREEQC code with the results from the stable isotopes. The interaction between surface water and groundwater influences the composition of ions in the mixing water, and further affects the water quality with other factors.
机译：地表水与地下水之间的关系不仅影响水量，而且影响水质。在第二松花江流域分析了水样中的稳定同位素（δD，δO-18）和水化学成分。深层地下水主要由中上游的浅层地下水补给。浅层地下水排入下游河流。上游的径流主要是下游的河流流量。 CCME WQI指出地表水和地下水的质量为“中等”。利用PHREEQC代码模拟了地表水与地下水之间的混合过程，并得出了稳定同位素的结果。地表水和地下水之间的相互作用影响混合水中离子的组成，并进一步影响水质和其他因素。

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