茅尾海富营养化程度及其对浮游植物生物量的影响  

Eutrophication Status and Its Impact on Phytoplankton Biomass in the Maowei Sea

作　　者：蓝文陆[1] 彭小燕[1] 

机构地区：[1]广西北海海洋环境监测中心站,广西北海536000

出　　处：《广西科学院学报》2011年第2期109-112,116,共5页Journal of Guangxi Academy of Sciences

基　　金：广西自然科学基金项目(2010GXNSFB013003)资助

摘　　要：于2003-2010年每年的枯水季（1-3月）、丰水季（6-8月）和平水季（10-11月）对茅尾海每年3期共22次表层海水取样,调查无机氮、磷酸盐、化学需氧量及浮游植物叶绿素a的变化,用富营养化指数评价该海域的富营养化程度,并分析营养化程度对浮游植物生物量的影响。结果发现,茅尾海无机氮、磷酸盐和化学需氧量均显上升的趋势,富营养指数逐渐增加,富营养程度从贫营养往中度富营养和重富营养化加重。近10年茅尾海湾的海湾富营养化程度的增加并没有引起浮游植物生物量的急剧增加,但增加了浮游植物爆发生长的风险。Three research cruises were carried out from 2003 to 2010 to evaluate the status of eutrophication and its effects on phytoplankton biomass in the Maowei Sea.Water samples were collected during dry season,wet season and normal season,respectively.The long-term variation of inorganic nitrogen,reactive phosphate,chemical oxygen demand（COD） and chlorophyll a in the surface waters were analyzed.Increasing trends of the mean nitrogen,phosphate and COD concentration were observed.Eutrophication index indicated that level of eutrophication in the Maowei Sea increased in the past few years.Although the biomass of phytoplankton did not change as significantly as that of eutrophication index during last ten years,the risk of algal bloom in the studied areas had increased.

关 键 词：富营养 浮游植物 生物量 

分 类 号：X55[环境科学与工程—环境工程]