福建东山湾海水中溶解态重金属平面分布及影响因素初探

发布时间：2018-05-10 18:41

本文选题：东山湾 + 重金属　；参考：《海洋学研究》2016年02期

【摘要】：根据2011年5月(春)和8月(夏)福建省东山湾海洋生态环境的调查数据,研究了海水中溶解态重金属(Cu、Pb、Zn、Cd和Cr_(T))的平面分布特征及其影响机制,结果表明:(1)海水中溶解态重金属含量平面分布呈在西南部形成"点源汇集状高值区"且自西向东逐渐递减趋势;除锌元素外,重金属含量季节变化趋势均为夏季春季。(2)20世纪80年代以来,除海水中Zn含量逐年增加外,Cu、Pb和Cd等污染物含量的变化趋势基本符合倒"U"形环境库兹涅茨曲线。(3)采用数理统计软件分析各溶解态重金属含量之间相关性,春季海水中重金属含量除总铬外,其余4种重金属含量两两呈显著正相关;夏季海水中重金属含量仅Cu-Cd和Cd-Cr_(T)相关性较好。(4)温度、盐度、pH值、化学需氧量、溶解氧、营养盐和生物效应是海水中溶解态重金属含量变化重要的影响因子。
[Abstract]:Based on the survey data of the marine ecological environment in Dongshan Bay, Fujian Province in May (spring) and August (summer), 2011, the plane distribution characteristics of the dissolved heavy metals CuPbPbZZN CD and CrTiTX in seawater and their influence mechanism were studied. The results show that the plane distribution of dissolved heavy metals in seawater shows a "high value region of point source accumulation" in the southwest, and decreases gradually from west to east, except for zinc elements. The seasonal variation trend of heavy metal content in summer spring is since 1980s. In addition to the increasing of Zn content in seawater year by year, the variation trend of pollutants such as Cu, Cu, Pb and CD basically accords with the Kuznets curve of inverted "U" shape environment. The correlation between the contents of dissolved heavy metals was analyzed by mathematical statistical software. In spring, the contents of heavy metals in seawater except total chromium showed significant positive correlation, while in summer, the contents of heavy metals in seawater were only correlated with Cu-Cd and Cd-Cr-T. 4) temperature, salinity, pH value, chemical oxygen demand, dissolved oxygen, and so on. Nutrient and biological effects are important factors affecting the content of dissolved heavy metals in seawater.
【作者单位】：福建省水产研究所福建省海洋生物增养殖与高值化利用重点实验室;
【基金】：国家海洋公益性行业科研专项项目资助(201005012,201305043-4) 福建省渔业“五新”科技推广项目资助(闽海渔科[2012]001号) 福建省海洋经济创新发展区域示范项目资助(2014FJPT01) 厦门南方海洋研究中心项目资助(14PZY017NF17)
【分类号】：X55

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