青岛崂山湾营养盐分布特征及富营养化评价

发布时间：2018-03-21 04:11

  本文选题：崂山湾　切入点：富营养化　出处：《海洋湖沼通报》2016年06期 　论文类型：期刊论文

【摘要】：根据2014年5月(春季)、8月(夏季)、11月(秋季)和2015年3月(冬季)对青岛崂山湾四个航次的调查资料,分析了无机氮(DIN)、磷酸盐(PO_4-P)和化学需氧量(COD)的含量及结构特征,运用单因子指数、富营养化指数和灰色聚类分析等方法评价了该海域富营养化状况。结果表明:DIN为崂山湾的主要污染因子,营养盐及COD浓度近岸略低于湾中部及湾口。夏季航次氮磷营养盐浓度低于其他季节,冬季航次COD浓度略高。全年N/P平均值为68.35,营养结构特征为磷限制。富营养化指数均值为1.34。灰色聚类分析表明,春季Ⅱ级站位比例为92.86%,无Ⅲ级站位;夏季Ⅱ级和Ⅲ级站位比例分别为64.29%和21.43%;秋季Ⅱ级和Ⅲ级站位比例分别为92.86%和7.14%;冬季100%为Ⅱ级站位。灰色聚类分析法适用于海湾富营养化水平评价。
[Abstract]:Based on the investigation data of four voyages in Laoshan Bay of Qingdao on May 2014 (spring, August, August, August, and March 2015, winter), the contents and structural characteristics of inorganic nitrogen (DINA), phosphate (PO4-P4) and chemical oxygen demand (COD) were analyzed. The eutrophication status in this area was evaluated by single factor index, eutrophication index and grey cluster analysis. The concentrations of nutrient and COD near shore were slightly lower than those in the middle of the bay and in the mouth of the bay, and the concentrations of nitrogen and phosphorus in summer voyage were lower than those in other seasons. The average value of COD in winter was 68.35, and the nutrient structure was limited by phosphorus. The average value of eutrophication index was 1.34.The grey cluster analysis showed that the proportion of grade 鈪，

本文编号：1642198