文献类型：期刊文献

中文题名：2019年温州湾藻华期间海洋生态要素演变特征

英文题名：Characteristics of Marine Ecological Factors During Red Tide Periods in 2019 in Wenzhou Bay

作者：刘金贵[1,3,4];车助镁[2];李尚鲁[2];仉天宇[1,3,4]

机构：[1]广东海洋大学海洋与气象学院,广东湛江524088;[2]浙江省海洋监测预报中心,浙江杭州310007;[3]自然资源部空间海洋遥感与应用重点实验室,北京100081;[4]广东海洋大学,近海海洋变化与灾害预警实验室,广东湛江524088

年份：2023

卷号：38

期号：2

起止页码：183

中文期刊名：地球科学进展

外文期刊名：Advances in Earth Science

收录：CSTPCD、、CSCD2023_2024、北大核心、CSCD、北大核心2020

基金：广东海洋大学科研启动经费资助项目“典型热带海湾营养盐循环过程——以湛江湾为例”(编号:060302032202);“南海区台风风暴潮数值模拟系统”(编号:060302032106)资助

语种：中文

中文关键词：温州湾;营养盐;生态浮标;赤潮;监测预警

外文关键词：Wenzhou Bay;Nutrients;Biogeochemical Argo;Red tides;Monitor warning

中文摘要：近年温州湾赤潮暴发严重威胁当地经济发展和生态安全。利用2019年4~6月海洋生态浮标实时监测数据,分析温州湾赤潮发生前后主要生态要素的演变特征。结果表明:①温州湾海温春季开始升高,5月初升至约20℃;受山溪性径流和潮流共同影响,表层盐度日内波动明显,变化范围为22~31 PSU,洪水时明显下降。②赤潮发生前期,溶解无机氮和活性磷酸盐(PO_(4)-P)主要受水动力条件控制,赤潮暴发后受藻类生长消耗与天气尺度的洪水补充共同影响。③通过主成分分析发现,海温和营养盐是赤潮发生的关键因子。最后分析氮磷比值与溶解氧含量演变过程,指出这两个化学指标可作为赤潮发生监测预警指标。研究结果可促进赤潮暴发与水文、生源要素关系的认识,并为赤潮发生预测预警提供参考。

外文摘要：In recent years,red tides have posed severe threats to local economic development and ecological safety.Using real-time monitoring data from the Biogeochemical Argo from April to June 2019,we investigated the changes in the main ecological factors during red tide periods.The results led to the following conclusions:①Water temperature began to increase from early spring and rose to about 20°C in early May.Owing to the impact of river discharge and tidal current,surface salinity presents obvious daily fluctuations with a range of 22~31 PSU,which evidently decreases due to flooding.②Dissolved Inorganic Nitrogen(DIN)and active phosphate are controlled by hydrodynamics prior to occurrence,whereas they are influenced mainly by algal growth and the supply of meteorological-scale flooding post occurrence.③Nutrients and sea temperature are determined as key factors through Principal Component Analysis(PCA).Lastly,the variation in the ratio of N∶P and Dissolved Oxygen(DO)was further analyzed,and we proposed that the two chemical indices can be referred to as warning indices of red tide occurrence in Wenzhou Bay.This study will help build a linkage between red tides and hydrology and ecological factors,in support of forecasts and early warning of red tides.