摘要
研究了 1984—2000 年长江口海域水质溶解态重金属 Hg, Pb, Cd 和 Cu 的分布变化，并初步探讨了其分布机理。长时段多航次分析能使我们更好地了解重金属的总体分布及变化特征，通过历年监测资料的收集、整理和统计，取得了两个基本认识：重金属的分布演化具有波动性，沿中值水平线上下变化；高值区分布存在三种基本形式，其中离岸带高值区在长江口海域最具特色，各种分布形式可以相互转化。
：The distribution changes of dissolved heavy metal Hg, Pb, Cd and Cu concentrations in the Changjiang estuary from 1984 to 2000 are analysed and discussed; in the meanwhile, a preliminary explanation for the distribution mechanism is given.The systematical study with long-term monitoring survey data of 43 voyages enables us to have an overall understanding of the heavy metal concentration distribution.Through gathering and summarizing the past monitoring data,two main conclusions are obtained: the dissolved heavy metal concentration is complicated and changeable, there are three 2 D distribution patterns in which the off-shore high concentration distribution pattern is typical and characteristic in the Changjiang estuary and its adjacent waters.
出处
《海洋通报》
CAS
CSCD
北大核心
2003年第2期32-38,共7页
Marine Science Bulletin
关键词
长江口海域
重金属
分布变化
离岸带高值区
Changjiang estuary
heavy metal
distribution change
off-shore high concentration area
