长江口及邻近水域富营养化现状及变化趋势的评价与分析  

Analysis and assessment on eutrophication status and developing trend in Changjiang Estuary and adjacent sea

作　　者：全为民[1] 沈新强[1] 韩金娣[1] 陈亚瞿[1] 

机构地区：[1]农业部海洋与河口渔业重点开放实验室

出　　处：《海洋环境科学》2005年第3期13-16,共4页Marine Environmental Science

基　　金：国家自然科学基金重点项目(50339040);科技部社会公益研究专项项目(2001DIA10014-4);社会公益监测项目(2001DIBI0082);农业部渔业生态环境重点开放实验室开放基金课题(2003-9)

摘　　要：根据2000～2002年6个航次的调查资料,分析研究了长江口及邻近水域富营养化现状及其变化趋势.研究结果表明,长江口及邻近水域营养盐含量十分丰富,平均56%水域无机氮含量已超过海水水质四类标准,磷酸盐也有40%以上已达到或超过海水水质四类标准.基于20个监测点有机污染指数(E值)和富营养化指数(A值)的计算结果,发现长江口及邻近水域从西向东、从北向南污染程度逐步降低;同时根据多年平均的A值划分,大约60%水域已达到重污染水平,受轻度和中度污染的水域均为20%左右.Based on the monitoring result of fisheries environment quality from 2000 to 2002 in Changjiang Estuary and adjacent sea, the present condition of eutrophication and developing trend were analyzed. The result showed that the concentration of nutrients was very high in the seawater. The concentration of inorganic nitrogen in seawater about fifty-six percent of the area exceeded the fourth grade of sea water quality standard. The concentration of inorganic phosphate in the seawater about forty percent of all monitoring data reached or exceeded the fourth grade of sea water quality standard. According to the organic pollution index （ A value） and eutrophication index （ E value） at twenty monitoring stations, the pollution level was decreased gradually from west to east and from north to south. The statistic result showed more than sixty percent of the water area were polluted very seriously, and about twenty percent was polluted lightly or middle-level,

关 键 词：长江口及邻近水域 富营养化 有机污染 评价 

分 类 号：X55[环境科学与工程—环境工程] X821