State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an, 710069, China.
Shandong Provincial Lunan Geology and Exploration Institute, Jining, 272100, Shandong, China.
Environ Monit Assess. 2022 Jul 8;194(8):573. doi: 10.1007/s10661-022-10136-2.
Groundwater is an important water source for domestic, industrial, and agricultural use in the western part of Zoucheng, China. Understanding its hydrochemical characteristics and formation mechanisms is important for the sustainable development and utilization of groundwater. In this study, 36 water samples were collected during the wet and dry seasons, respectively, and the hydrochemical components such as K, Na, Ca, Mg, Cl, SO, HCO, NO, F, TH, and TDS were analyzed. A graphical method, correlation analysis, and principal component analysis were applied to explore the hydrochemical characteristics and evolution mechanisms of groundwater in the study area. The results show that the orders of the anion and cation concentrations of karst groundwater and pore groundwater are Ca > Na > Mg > K and HCO > SO > Cl > NO > F, respectively. On the whole, the karst groundwater quality is better than the pore groundwater quality, which in turn is better than the surface water quality. In addition, water quality in the dry season is better than water quality in the wet season for all the three water sources. The hydrochemical types of groundwater are complex and changeable. Compared with dry seasons, HCO and SO type water increase during the wet seasons, while the Cl type and Mg type water decrease. Na type is significantly more prevalent in pore groundwater than in karst groundwater. The chemical formations of karst groundwater and pore groundwater in the dry and wet seasons are mainly affected by water-rock interactions and human activities.
在中国邹城市西部地区，地下水是居民生活、工业和农业用水的重要水源。了解其水文地球化学特征和形成机制对于地下水的可持续开发和利用至关重要。本研究分别在丰水期和枯水期采集了 36 个水样，分析了 K、Na、Ca、Mg、Cl、SO、HCO、NO、F、TH 和 TDS 等水化学组分。采用图形法、相关分析和主成分分析等方法，探讨了研究区地下水的水文地球化学特征及其演化机制。结果表明，岩溶地下水和孔隙地下水的阴阳离子浓度顺序为 Ca > Na > Mg > K 和 HCO > SO > Cl > NO > F。总体而言，岩溶地下水水质优于孔隙地下水，孔隙地下水又优于地表水。此外，对于三种水源，枯水期的水质均优于丰水期。地下水的水质类型复杂多样。与枯水期相比，HCO 和 SO 型水在丰水期增加，而 Cl 型和 Mg 型水减少。孔隙地下水的 Na 型水比岩溶地下水更为普遍。干、湿季岩溶地下水和孔隙地下水的化学形成主要受水岩相互作用和人类活动的影响。
