Peng Hong-Xia, Hou Qing-Qin, Zeng Min, Huang Chang-Sheng, Shi Huan-Huan, Pi Peng-Cheng, Pan Yu-Jie
School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China.
Wuhan Center of China Geological Survey, Wuhan 430205, China.
Huan Jing Ke Xue. 2021 Nov 8;42(11):5375-5383. doi: 10.13227/j.hjkx.202104073.
Groundwater resources in the Leizhou Peninsula provide a strong support for the economic and social development. Therefore, understanding the chemical characteristics and formation mechanism of groundwater in this area is necessary for the rational exploitation and sustainable utilization of water resources. In this study, 43 groundwater samples were collected, and the hydrochemical characteristics and controlling factors were analyzed by descriptive statistical analysis, Piper triangular diagrams, ArcGIS spatial interpolation, Gibbs diagram, and ion ratios. The results showed that:① The anions and cations of the groundwater in the study area were mainly HCO, Ca, and Na, and the hydrochemical types were mainly HCO-Cl-Na-Ca, HCO-Cl-Na-Ca-Mg, HCO-Cl-Na-Mg, and HCO-Na. The contents of Cl, SO, and Nawere higher in the west of Leizhou City compared to other areas. The sites with higher contents of HCO, NO, Ca, Mg, and K were mainly concentrated in the southwest and eastern coastal areas. ② The chemical evolution of groundwater was mainly affected by water-rock interaction, cation alternating adsorption, and anthropogenic activities. The sources of Na and K were mainly from evaporative and silicate rocks, Ca and Mg were mainly from carbonate karstification, while NO originated from anthropogenic activities.
雷州半岛的地下水资源为经济社会发展提供了有力支撑。因此，了解该地区地下水的化学特征及形成机制对于水资源的合理开发与可持续利用至关重要。本研究采集了43个地下水样本，通过描述性统计分析、Piper三角图、ArcGIS空间插值、Gibbs图和离子比值分析了水化学特征及控制因素。结果表明：①研究区地下水的阴离子和阳离子主要为HCO、Ca和Na，水化学类型主要为HCO-Cl-Na-Ca、HCO-Cl-Na-Ca-Mg、HCO-Cl-Na-Mg和HCO-Na。雷州市西部的Cl、SO和Na含量高于其他地区。HCO、NO、Ca、Mg和K含量较高的站点主要集中在西南和东部沿海地区。②地下水的化学演化主要受水岩相互作用、阳离子交替吸附和人为活动影响。Na和K的来源主要是蒸发岩和硅酸盐岩，Ca和Mg主要来自碳酸盐岩溶蚀作用，而NO则源于人为活动。
