地理科学 ›› 2013, Vol. 33 ›› Issue (3): 342-348.doi: 10.13249/j.cnki.sgs.2013.03.342

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运用数理统计和模糊数学评价秦皇岛洋戴河平原的海水入侵程度

章斌1,2(), 宋献方1(), 韩冬梅1, 郭占荣3, 肖国强4, 杨吉龙4   

  1. 1.中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室, 北京 100101
    2.环境保护部华南环境科学研究所, 广东 广州 510655
    3.厦门大学海洋与地球学院, 福建 厦门 361005
    4.天津地质矿产研究所, 天津 300170
  • 收稿日期:2012-06-25 修回日期:2012-08-07 出版日期:2013-03-20 发布日期:2013-01-31
  • 作者简介:

    作者简介:章 斌(1985-),男,福建宁化人,助理工程师,硕士,主要从事水文地球化学方面的研究。E-mail:zhangbinem@gmail.com

  • 基金资助:
    国家重点基础研究发展计划(973)项目(2010CB428805)资助

Seawater Intrusion Degree Evaluation Based on Mathematical Statistics and Fuzzy Mathematics in Qinhuangdao Yangdai River Plain

Bin ZHANG1,2(), Xian-fang SONG1(), Dong-mei HAN1, Zhan-rong GUO3, Guo-qiang XIAO4, Ji-long YANG4   

  1. 1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China
    2. South China Institute of Environmental Sciences, Guangzhou, Guangdong 510655, China
    3. Collegae of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian 361005, China
    4.Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China
  • Received:2012-06-25 Revised:2012-08-07 Online:2013-03-20 Published:2013-01-31

摘要:

运用数理统计方法获取秦皇岛洋戴河平原地下潜水和海水的水化学统计特征,据此优选出4项海水入侵评判指标,建立各评判指标的背景值及指标等级体系,并将模糊数学综合评价法和地理信息系统结合起来评价研究区潜水含水层的海水入侵程度。研究结果表明:氯离子Cl-、电导率EC、溶解总固体TDS和潜在盐度是指示本区潜水含水层海水入侵程度的最佳指标,其判别海水入侵发生的下限值分别为250 mg/L、1 250 μs/cm、700 mg/L和8.5 meq/L;洋戴河平原潜水含水层的海水入侵程度总体上为中等水平,洋、戴河间浦河一带的潜水含水层海水入侵程度最为强烈。

关键词: 秦皇岛, 洋戴河平原, 数理统计, 模糊数学, 海水入侵程度

Abstract:

Analyzing the distribution map of seawater intrusion degree can increase the knowledge of seawater intrusion mechanism, which is not only the important reference for water supplies of production and daily life but also the core content of seawater intrusion survey and research. In this article, four effective indicators for seawater intrusion of Qinhuangdao Yangdai River Plain which is located in the northeast of Hebei Province were selected out according to the different hydrochemical characteristics of fresh groundwater, brackish groundwater and seawater using the method of mathematical statistics. And then, the background values and index system of those seawater intrusion indicators were built to carry on seawater intrusion degree evaluation work based on the approach of fuzzy synthetic evaluation and geographic information system. The research results can be showed as follows: The chloride ion (Cl-), electric conductivity (EC), total dissolved solids (TDS) and potential salinity are the optimal seawater intrusion indicators which can help to distinguish the intruded samples from all groundwater samples. The background value of study area for chloride ion concentration, EC, TDS and potential salinity are 83.06-243.8 mg/L,600-1 222 μs/cm,341.82-679.14 mg/L and 2.92-8.05 meq/L, respectively. The lower limit value of chloride ion concentration, EC, TDS and potential salinity are 250 mg/L, 1 250 μs/cm、700 mg/L and 8.5 meq/L, respectively, which can manifest the occurrence of seawater intrusion. The groundwater samples identified seawater intrusion degree as rank II and rank III , make up 74% of all samples , which reveals that seawater intrusion degree of study area generally belongs to the medium level. On the basis of the distribution map of seawater intrusion degree, the seawater intrusion degree of the alluvial aquifers around Pu River between the Yang River and Dai River is the highest.

Key words: Qinhuangdao, Yangdai River plain, mathematical statistics, fuzzy mathematics, seawater intrusion degree

中图分类号: 

  • X824