生态环境学报2016，Vol.25Issue(2)：272-278,7.DOI:10.16258/j.cnki.1674-5906.2016.02.013
春夏季长江口及其邻近海域表层和底层环境因素、氮分布分析
Analysis on the Environmental Factors and Dissolved Inorganic Nitrogen in the Changjiang (Yangtze River) Estuary and in the Adjacent East China Sea in Spring and Summer
摘要
Abstract
According to monitoring data in spring and summer from 2007 to 2013, the spatial trend of temperature and salinity were analyzed at the surface and bottom water in the Changjiang (Yangtze River) Estuary and in the adjacent East China Sea (including Changjiang Estuary, Hangzhou Bay and Zhoushan fishing ground). And the spatial trend and structure of dissolved inorganic nitrogen (DIN) were also analyzed. The results indicated that the temperature was higher in the west than that in the east. The difference value between the west and the east was 3 ℃ at the surface and 2.2 ℃ at the bottom. The temperature at the surface and the bottom water was not obvious. The trend of salinity was different in Changjiang Estuary, Hangzhou Bay and Zhoushan fishing ground. The salinity was lower at the east than at the west in Changjiang Estuary. The salinity variation was not obvious in Hangzhou Bay. The salinity was higher in the east and south in Zhoushan fishing ground. The salinity was not obvious at the surface and bottom water in Changjiang Estuary, Hangzhou Bay and Zhoushan fishing ground. The DIN content at the surface water was higher than the bottom water in Changjiang Estuary, and was not obvious in Hangzhou Bay and Zhoushan fishing ground. Among the DIN forms, nitrate was main content, then was ammonium, the lowest was nitrite in Changjiang Estuary, Hangzhou Bay and Zhoushan fishing ground. The temperature and salinity was not obvious difference, which was possible factor for accordant structure of DIN at surface and bottom water. From 2007 to 2013 the percentage of nitrogen forms in DIN at surface water was coincident with bottom water, which was indistinctively affected by water depth. The percentage of nitrate nitrogen in DIN was over 60%at surface and bottom water. The percentage of ammonium nitrogen in DIN was 3%~41%at surface and bottom water. The percentage of nitrite nitrogen in DIN was lower than 5%at surface and bottom water.关键词
长江口/无机氮/温度/盐度/分布趋势,结构分析Key words
Changjiang Estuary/inorganic nitrogen/temperature/salinity/distribution/structure analysis分类
资源环境引用本文复制引用
尹艳娥,沈盎绿,周进,平仙隐,王云龙..春夏季长江口及其邻近海域表层和底层环境因素、氮分布分析[J].生态环境学报,2016,25(2):272-278,7.基金项目
国家公益性行业（农业）科研专项经费项目 （）
