单 位：
中国水产科学研究院东海水产研究所/农业部海洋与河口渔业重点开放实验室
关键词：
长江口及其邻近海域;无机营养盐;分布特征
摘 要：
根据长江口及其附近海域2个航次(2012年5月和8月)营养盐等的调查资料,分析了调查海域无机营养盐5项指标的分布特征及其分布原因。结果表明,春季磷酸盐和硅酸盐的质量浓度均小于夏季,而总溶解性无机氮(DIN)却大于夏季;春、夏季表层磷酸盐质量浓度均小于底层;而硅酸盐和DIN却没有这一规律;春季(5月)、夏季(8月)调查海区水体中无机营养盐(除氨氮以外)的质量浓度总体呈现从近海向外海递减趋势;硝酸盐是调查海水中无机氮主要存在形式,占DIN的90%左右;分析各无机营养盐与盐度的相关性,得知硅酸盐与盐度的相关性最大,DIN次之,磷酸盐最差。
译 名：
Distribution of Inorganic Nutrient in the Yangtze Estuary and Its Adjacent Waters in Spring and Summer
作 者：
XIA Rong-shuang;ZHANG Hai-yan;XU Ya-yan;Yin Yane;XU Zhao-li;Key and Open Laboratory of Marine and Estuary Fisheries Chinese Academy of Fisheries Sciences / East China Sea Fisheries Research Institute,Ministry of Agriculture of China;College of Marine Sciences, Shanghai Ocean University;
关键词：
the Yangtze estuary and adjacent waters;;inorganic nutrients;;distribution features
摘 要：
Based on the nutrient data observed in the Yangtze Estuary and its adjacent waters in May and August, 2012,the characteristics and reason of distribution of 5 inorganic nutrients in the investigated sea waters were analyzed. Results showed that with the increase of offshore distance, the mass concentration of inorganic nutrient(except ammonia nitrogen)gradually decreased in spring(May) and summer(August) in the whole survey area on the whole. Mass concentration of activity of phosphate and silicate in spring were less than that in summer,but the total soluble inorganic nitrogen(DIN) was adverse. Mass nitrate concentration of DIN was the highest, which was the main form of inorganic nitrogen in survey sea accounting for about 90% of the DIN in spring and summer. The correlation analysis of various inorganic nutrient and salinity showed that silicate was significantly biggest correlated with salinity, followed by DIN and phosphate.
