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黄河三角洲近岸海域营养盐分布与富营养化评价

Nutrients Distribution and Eutrophication Assessment on Coastal Waters Adjacent to Yellow River Delta

投稿时间：2011-09-13 修订日期：2012-02-13

DOI：

英文关键词:Yellow River delta nutrients eutrophication

基金项目:国家海洋公益性行业科研专项(200805070,200905009-5)

作者	单位	E-mail
刘峰	１．山东省淡水水产研究所，山东济南　２５００１３；２．中国海洋大学教育部海水养殖重点实验室，山东青岛　２６６００３	fengliu2758@yahoo.com.cn
李秀启^*	１．山东省淡水水产研究所，山东济南　２５００１３	liuxiuqi2004@yahoo.com.cn
董贯仓	１．山东省淡水水产研究所，山东济南　２５００１３
刘　超	１．山东省淡水水产研究所，山东济南　２５００１３
秦玉广	１．山东省淡水水产研究所，山东济南　２５００１３
朱士文	１．山东省淡水水产研究所，山东济南　２５００１３
高云芳	１．山东省淡水水产研究所，山东济南　２５００１３

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中文摘要:

根据2010年5月、8月和11月共3个航次对黄河三角洲近岸海域9个站点的海水化学调查资料,分析该海域水体营养盐空间分布特征及其富营养化水平。与历史数据相比,黄河口海域盐度上升,无机磷污染加剧,无机氮有所下降但含量仍超标;无机氮和COD沿黄河口向南递增,向北先递减,至刁口河、马新河海域又上升,主要与南部广利河、小清河,北部刁口河、马新河等入海河流径流量和污染程度较高有关。根据富营养化指数(EI),调查海域富营养化超标率为55.6%,8月的富营养化程度较高。有机污染指数(A)8月(3.07)>11月(2.05)>5月(1.40),分别为中污染、轻污染和开始受污染水平。对比2种评价结果,富营养化指数与有机污染指数具有较好的相互印证作用。COD和无机氮是造成黄河口附近海域富营养化的主要因子;8月、11月N:P明显低于以往报道,叶绿素a与总氮、无机氮均呈极显著正相关(P<0.01),说明随着水体磷含量逐渐上升,春季以后黄河口海域水体正在由磷限制型逐渐向氮限制型转变。

英文摘要:

The nutrients distribution and the degree of eutrophication were studied based on the nutrient data from three cruises of oceanographic survey in May，August and November of 2010 in 9 stations adjacent to marine waters of the Yellow River delta. The results showed the salinity and inorganic phosphorus pollution increased，while inorganic nitrogen concentration decreased compared with historical data，still exceeding the standard; Along Yellow River estuary southward，inorganic nitrogen concentration and COD concentration increased，and declined northward，then increased at Diaokouhe River，the Maxinhe River area again，mainly correlating with the river runoff and pollution levels of the Guanglihe River，Xiaoqinghe River in the south，and Diaokouhe River,the Maxinhe River in the north. The eutrophication in coastal waters exceeded by 55.6%，and eutrophication was higher in August; Organic pollution index(A value )(3 .07)in August>(2.05)in November>(1.40)in May，indicated intermediate pollution，light pollution and initial pollution stage respectively. COD and inorganic nitrogen concentration were the main factors of eutrophication. The ratio of N: P in August and November were significantly lower than was previously reported. Chlorophyll a and TN，inorganic nitrogen showed a highly significant positive correlation(P<0.01)，indicating that with phosphorus in water increases gradually，the marine waters adjacent to Yellow River Estuary is transiting from the P-dominated type to the N-dominated type after spring.

刘峰,李秀启,董贯仓,刘　超,秦玉广,朱士文,高云芳.2012.黄河三角洲近岸海域营养盐分布与富营养化评价[J].水生态学杂志,33(1):14-19.

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