极地研究2024，Vol.36Issue(2)：266-285,20.DOI:10.13679/j.jdyj.20220440
南极冰间湖浮游植物生物量和生物生产力时空特征及影响因素研究进展
Review of the spatial-temporal features of phytoplankton biomass and bio-logical productivity in Antarctic polynyas and influencing factors
摘要
Abstract
Polynyas play an important role in climate change and ecosystem environment.This paper reviews the spatial-temporal features and variations of phytoplankton biomass and productivity in four Antarctic polyn-yas,the Ross Sea,Amundsen Sea,Pine Island,and Mertz polynyas as well as the effects of physical pa-rameters and climate modes on chlorophyll-a and the onset and duration of phytoplankton blooms in the polynyas.The conclusion of the paper are as follows:(1)the Ross Sea polynya is the area with the highest biological productivity in Antarctic marginal seas,accounting for 28%of the total productivity of the Southern Ocean;the Amundsen Sea and Pine Island polynyas have the highest productivity per unit area among 37 Antarctic polynyas ecosystems;there are obvious interannual variations of phytoplankton biomass in the Mertz polynya.(2)Sea ice concentration,wind speed,cloud cover,and other physical parameters are closely related to phytoplankton biomass,with obvious seasonal and regional characteristics.Sea ice con-centration affects the photosynthetically available radiation reaching the sea surface by changing the amount of open water in polynyas;wind speed affects the vertical mixing intensity and changes the vertical distribu-tions of nutrients and phytoplankton;the influence of cloud cover on polynya ecosystems is the result of the balance between the intensities of visible light and ultraviolet radiation.In some polynyas,there is a sig-nificant correlation between the interannual variation of phytoplankton biomass and the climate modes(such as the Southern Annular Mode and Semiannual Oscillation).regulating the climate variability at high lati-tudes in the southern hemisphere.In the future,long-term satellite remote sensing observations,in-situ ob-servations and numerical simulations can be combined to explore the physical-ecological coupling mecha-nism between the climate modes and phytoplankton biomass,and advance the understanding of the varia-tions and mechanisms of ecosystem productivity in polynyas with the goal of improving understanding of the biogeochemical cycling in key polar regions and its role in modulating the climate system.关键词
南极冰间湖/浮游植物生物量/时空特征/环境变量/气候模态Key words
Antarctic polynyas/phytoplankton biomass/spatial-temporal patterns/environmental variables/climate modes引用本文复制引用
江宁,张召儒..南极冰间湖浮游植物生物量和生物生产力时空特征及影响因素研究进展[J].极地研究,2024,36(2):266-285,20.基金项目
国家重点研发计划课题(2022YFC2807601)、国家自然科学基金(41941008和41876221)、上海科学技术委员会(20230711100和21QA1404300)、南极海洋对气候变化的影响和响应(IRSCC1-02-01B)、国家重点研发计划(2019YFC1509102)、上海交通大学基础研究特区计划(21TQ1400201)和上海极地前沿科学研究基地(SCOPS)资助 （2022YFC2807601）
