广东近岸海域活性磷酸盐时空变化特征及富营养化程度研究  

Spatial-temporalVariation Characteristics of Active Phosphate and Eutrophicationin Coastal Waters of Guangdong Province

作　　者：孙嘉琪 陈鼎豪 Sun Jiaqi;Chen Dinghao(Guangdong Provincial Academy of Environmental Science, Guangzhou 510045, China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai), Zhuhai 519000, China)

机构地区：[1]广东省环境科学研究院,广东广州510045 [2]南方海洋科学与工程广东省实验室(珠海),广东珠海519000

出　　处：《环境科学与管理》2022年第7期43-48,共6页Environmental Science and Management

基　　金：广东省科技创新战略专项资金项目(2019B121205004)。

摘　　要：根据2019年春、夏、秋3个季节对广东近岸海域的环境调查资料,对表层海水中活性磷酸盐(DIP)的时空变化特征进行了研究,采用富营养化指数对其富营养化程度进行了评价,分析了营养盐的结构,并探讨了活性磷酸盐与环境因子之间的关系。结果表明,活性磷酸盐在湛江港、汕头港、珠江口及其邻近海域和大亚湾石化区附近海域等局部海域浓度较高,3个季节在活性磷酸盐浓度较高的海域多呈现出中度或重度富营养状态,DIP主要来源于陆源营养盐的输入,同时还受到浮游植物光合作用以及有机物降解等的综合影响。According to the environmental survey data of the coastal waters of Guangdong Province in Spring,Summer and Autumn of 2019,this article studied the temporal and spatial variation characteristics of active phosphate(DIP)in the surface seawater.Eutrophication degree were evaluated by eutrophication index,the structure of nutrient salt was analyzed,and the relationship between active phosphate and environmental factors was discussed.The results showed that concentration of DIP is relatively high in Zhanjiang Port,Shantou Port,Pearl River Estuary and its adjacent waters,and the waters near the Daya Bay Petrochemical Area.In the researched seasons,the high concentration of DIP sea areas showed moderate or severe eutrophication.DIP mainly came from the inputs of terrigenous nutrients,and was also affected by phytoplankton photosynthesis and organic matters degradation.

关 键 词：活性磷酸盐 时空变化 富营养化 环境因子 近岸海域 

分 类 号：X132[环境科学与工程—环境科学]