椒江口海域营养盐及富营养状况的时空变化  

Spatial-temporal changes of nutrient and eutrophication status in Jiaojiang estuary

作　　者：钱健[1] 贾怡然[1] 丰卫华[1] 陈立红[1] 陈德慧[1] 黄宝兴[1] 

机构地区：[1]国家海洋局第二海洋研究所工程海洋学重点实验室,浙江杭州310012

出　　处：《海洋环境科学》2016年第5期743-749,共7页Marine Environmental Science

摘　　要：以2006年、2011年、2014年春季椒江口水质监测资料为基础,运用富营养指数法、有机污染综合指数法和潜在性富营养化评价法,对近10 a来椒江口海域营养盐的时空分布变化特征和富营养化状况进行了研究分析。结果表明:近10 a来,椒江口海域表层水体DIN、DIP均劣于四类海水水质标准,海域水体呈严重污染状态,富营养化程度较高;从时间上看,DIN、DIP浓度和富营养化程度均呈先加重后减轻的趋势;从空间上看,椒江口海域表层水体的DIN、DIP以及E值、A值平面分布均呈由河口向外海逐渐递减的阶梯状分布。入海径流携带的污染物、周边大型用海工程是影响该海域水体营养盐浓度和富营养化程度的主要因素。Based on the water quality monitoring data in the spring of 2006,2011 and 2014,this paper analysed the temporal and spatial distribution characteristics of nutrient and eutrophication in Jiaojiang estuary in the past 10 years by applying the eutrophication index method,the organic pollution index method and the potential eutrophication assessment model. The analysis indicated that both DIN and DIP exceeded the forth standard of sea water quality,and it showed the heavily polluted seawater and the high eutrophication in the spring of the Jiaojiang estuary. In the past10 years,the concentration of DIN and DIP and the eutrophication degree initially increased and dropped afterwards.Furthermore,horizontal distributions of concentrations of DIN and DIP,as well as E value and A value,in surface seawater of Jiaojiang estuary identified a decreasing trend from the estuary toward the open sea. Two main factors that influence DIN and DIP concentrations and the eutrophication degree in Jiaojiang estuary were the pollution flowed into the sea and the nearby large-scale ocean engineering.

关 键 词：椒江口 营养盐 富营养化 时空变化 

分 类 号：P734[天文地球—海洋化学]