Mutual feedback between algal blooming and global warming  

作　　者：Jianrong MA Guijun YANG Xianfu ZHAO Boqiang QIN Kun SHAN Botian ZHOU Yan ZENG Jingfu WANG Jingan CHEN 

机构地区：[1]Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China [2]State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China [3]School of Environment and Ecology,Jiangnan University,Wuxi 214122,China [4]Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem,Institute of Hydroecology,Ministry of Water Resources&Chinese Academy of Sciences,Wuhan 430079,China [5]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China

出　　处：《Journal of Oceanology and Limnology》2024年第3期787-801,共15页海洋湖沼学报（英文）

基　　金：Supported by the Chongqing Water Conservancy Bureau Project(No.5000002021BF40001);the National Natural Science Foundation of China(No.41601537);the Opening Fund of the State Key Laboratory of Environmental Geochemistry(No.SKLEG2021202);the Strategic Pilot Science and Technology(Class A,No.XDA23040303)。

摘　　要：Global warming and algal blooms have been two of the most pressing problems faced by the world today.In recent decades,numerous studies indicated that global warming promoted the expansion of algal blooms.However,research on how algal blooms respond to global warming is scant.Global warming coupled with eutrophication promoted the rapid growth of phytoplankton,which resulted in an expansion of algal blooms.Algal blooms are affected by the combined effects of global warming,including increases in temperatures,CO_(2)concentration,and nutrient input to aquatic systems by extreme weather events.Since the growth of phytoplankton requires CO_(2),they appear to act as a carbon sink.Unfortunately,algal blooms will release CH4,CO_(2),and inorganic nitrogen when they die and decompose.As substrate nitrogen increases from decompose algal biomass,more N2O will be released by nitrification and denitrification.In comparison to CO_(2),CH4has 28-fold and N2O has 265-fold greenhouse effect.Moreover,algal blooms in the polar regions may contribute to melting glaciers and sea ice(will release greenhouse gas,which contribute to global warming)by reducing surface albedo,which consequently would accelerate global warming.Thus,algal blooms and global warming could form feedback loops which prevent human survival and development.Future researches shall examine the mechanism,trend,strength,and control strategies involved in this mutual feedback.Additionally,it will promote global projects of environmental protection combining governance greenhouse gas emissions and algal blooms,to form a geoengineering for regulating the cycles of carbon,nitrogen,and phosphorus.

关 键 词：climate change carbon neutrality EUTROPHICATION greenhouse gas glaciers melting GEOENGINEERING 

分 类 号：P467[天文地球—大气科学及气象学] X52[环境科学与工程—环境工程]