生态科学2023，Vol.42Issue(6)：63-73,11.DOI:10.14108/j.cnki.1008-8873.2023.06.007
典型东海原甲藻赤潮过程的环境影响因子分析
Analysis of environmental factors for typical Prorocentrum donghaiense blooms
摘要
Abstract
The frequent red tides caused by Prorocentrum donghaiense have become one of the most key causative species in the East China Sea for almost two decades.The present study was conducted to determine the response process of P.donghaiense to the environmental factors.Based on the continuous-observed data about environmental elements from buoys and ocean stations in May 2019,the formation and elimination of three outbreaks of P.donghaiense blooms was analyzed along Zhejiang coastal areas.Principal component analysis was also combined.The results showed that:(1)Continuous warming,declining pressure,high humidity,strong coastal wind,abundant nutrients,and decreasing salinity were important predisposing factors.(2)The weak wind speed,slowly-rising water and air temperature were maintainable factors.(3)Dissolved oxygen and pH were positively correlated with the red tide biomass,while nitrite was negatively correlated with the red tide biomass.The changes of these three factors were mainly caused by the increase of photosynthetic products and decomposition products of algal organisms.(4)High pH,high wind speed,increasing salinity and pressure,and large consumption of nutrients in the late stage of red tides could accelerate the decline of red tide.Our findings reveal that the cause and mechanism of P.donghaiense blooms could provide scientific reference to the early prevention and control of harmful algal blooms in the future.关键词
东海原甲藻/赤潮/主成分分析/叶绿素a/环境因子Key words
Prorocentrum donghaiense/red tide/principal component analysis/chlorophyll a/environmental factors分类
资源环境引用本文复制引用
何恩业,王丹,卢勇夺,李晓,季轩梁..典型东海原甲藻赤潮过程的环境影响因子分析[J].生态科学,2023,42(6):63-73,11.基金项目
国家重点研发计划项目(2022YFC3105102 （）
2022YFC3105205) （）
自然资源部海洋环境探测技术与应用重点实验室开放基金课题(MESTA-2020-B012) （MESTA-2020-B012）
南方海洋科学与工程广东省实验室(珠海)自主科研项目(SML2020SP008) （珠海）
