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海南省海岸带典型区域海水入侵现状评价
杨 坤1, 刘文全2, 徐兴永2, 陈广泉2, 刘衍君1, 付腾飞2, 王传珺3, 付云霞4
1.环境与规划学院 聊城大学;2.海洋沉积与环境地质国家海洋局重点实验室;3.国家海洋环境监测中心;4.青岛地质工程勘察院
摘要:
海水入侵已经成为我国沿海地区海岸带典型地质灾害之一。本文基于海南省东部和南部海岸带地区地下水现场监测数据和室内水化学测定数据,研究了各水化学指标间的相关性,分析了区域海水入侵现状。研究结果表明地下水中Cl-与Na+的变异系数较高,与TDS(矿化度)具有强的相关性;以Cl-和TDS分别作为评价因子开展了海水入侵现状评价,结果表明研究区域内地下水未受到海水入侵的影响;Na+/Cl-、Cl-/HCO3-、Cl-/SO42-、Ca2+/Na+、Ca2+/Mg2+、钠吸附比(SAR)与Cl-的相关性分析结果表明Na+/Cl-、Ca2+/Na+、Ca2+/Mg2+以及SAR四个参数可以作为海南省海水入侵判定的评价因子。研究结果对建设海南省“国际旅游岛”战略目标,指导当地合理利用地下水具有参考价值。
关键词:  海南省  地下水  海水入侵  离子含量  现状评价
DOI:10.11759/hykx20181015001
分类号:P641.7
基金项目:国家重点研发计划(2016YFC040280402);国家自然科学基金(41706068)
Evaluation of Seawater Intrusion in Typical Coastal Zones of Hainan Province
YANG Kun1, LIU Wen-quan2, XU Xing-yong2, CHEN Guang-quan2, LIU Yan-jun1, FU Teng-fei2, wangchuanjun3, fuyunxia4
1.College of Environment and Planning,Liaocheng University;2.Key Laboratory ofMarine Sedimentology and Environmental Geology,First Institute of Oceanography,SOA;3.National Marine Environmental Monitoring Center;4.Qingdao Geological Engineering Investigation Institute
Abstract:
Seawater intrusion has become one of the typical geological disasters in coastal zones of China. Based on the field monitoring data and indoor water chemistry measurement data of the coastal areas in the east and south of Hainan province, this paper studied the correlation between various water chemistry indexes and analyzed the current situation of regional seawater intrusion. The results show that the variation coefficient of Cl<sub>-</sub> and Na<sub>+</sub> in groundwater is high and strongly correlated with TDS (salinity). The current evaluation of seawater intrusion was carried out with Cl- and TDS as evaluation factors respectively, the results showed that the inland water was not affected by seawater intrusion; The correlation analysis results of Na<sub>+</sub>/Cl<sub>-</sub>, Cl<sub>-</sub>/HCO<sub>3</sub><sub>-</sub>, Cl<sub>-</sub>/SO<sub>4</sub><sub>2-</sub>, Ca<sub>2+</sub>/Na<sub>+</sub>, Ca<sub>2+</sub>/Mg<sub>2+</sub>, sodium adsorption ratio (SAR) and Cl<sub>-</sub> showed that the four parameters of Na<sub>+</sub>/Cl<sub>-</sub>, Ca<sub>2+</sub>/Na<sub>+</sub>, Ca<sub>2+</sub>/Mg<sub>2+</sub> and SAR could be used as evaluation factors for judging seawater intrusion in Hainan province. The research results have reference value for the construction of Hainan "international tourism island" strategic goal and for the local rational utilization of groundwater.
Key words:  Hainan province  groundwater  seawater intrusion  ion content  status evaluation
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