YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
Prolonged impacts of extreme precipitation events weakened annual ecosystem CO2 sink strength in a coastal wetland
Wei, Siyu1,2; Han, Guangxuan1,2; Chu, Xiaojing1,2; Sun, Baoyu1,2,3; Song, Weimin1,2; He, Wenjun1,2; Wang, Xiaojie1,2; Li, Peiguang1,2; Yu, Dongxue1,2
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
2021-11-15
Volume310Pages:12
KeywordCoastal wetland Eddy covariance Extreme precipitation event Legacy effect Net ecosystem CO2 exchange
DOI10.1016/j.agrformet.2021.108655
Corresponding AuthorHan, Guangxuan(gxhan@yic.ac.cn)
AbstractIt remains unclear whether coastal wetlands could maintain the expected carbon sink role since extreme climate events are predicted to occur more frequently under future climate change. Among these extreme events, extreme precipitation may cause significant changes in ecosystem carbon stocks in coastal wetlands. However, the impacts of extreme precipitation events on carbon cycle processes and the mechanisms responsible for associated changes in the ecosystem carbon balance remain uncertain. To address this issue, we investigated the effects of extreme precipitation events on the ecosystem carbon dioxide (CO2) budget based on a 10-year eddy covariance dataset (2010-2019) at a coastal wetland in the Yellow River Delta. Results showed that this coastal wetland was a stable sink for CO2, with the annual net ecosystem CO2 exchange (NEE) ranged between -94.49 and -240.70 g C m(-2) yr(-1). Meanwhile, the interannual variability of the ecosystem CO2 sink strength in the dry stage was linked to the vegetation condition, and it was strongly affected by extreme precipitation events in the wet stage. During the wet stage, there was a clear trend of less negative daily NEE (i.e., lower CO2 uptake rate) in the years with extreme precipitation events occurring (extreme years) than in normal years, leading to the wet stage cumulative CO2 uptake being 56% lower in extreme years. Eventually, the coastal wetland became a weaker annual CO2 sink due to the prolonged impact of the extreme precipitation event. This research provides a timely study of the effect of extreme precipitation on ecosystem CO2 budget in coastal wetlands and should be of value to researchers attempting to assess the future impact of climate change on coastal ecosystems.
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Science Partnership Program of the Chinese Academy of Sciences ; Natural Science Foundation of Shandong Province ; Open Research Fund Program of Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta (Binzhou University) ; NSFCShandong Union Project
Indexed BySCI
Language英语
WOS KeywordTERRESTRIAL CARBON-CYCLE ; CLIMATE EXTREMES ; PLANT-RESPONSES ; NET ; FLUXES ; EXCHANGE ; VARIABILITY ; RESPIRATION ; TOLERANCE ; DROUGHT
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000705310700003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/30788
Collection中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
支撑部门_中国科学院黄河三角洲滨海湿地试验站
Corresponding AuthorHan, Guangxuan
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai, Shandong, Peoples R China
2.Chinese Acad Sci, Yellow River Delta Field Observat & Res Stn Coast, Dongying, Shandong, Peoples R China
3.East China Normal Univ, Sch Ecol & Environm Sci, State Key Lab Estuarine & Coastal Res, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Shanghai, Peoples R China
Recommended Citation
GB/T 7714
Wei, Siyu,Han, Guangxuan,Chu, Xiaojing,et al. Prolonged impacts of extreme precipitation events weakened annual ecosystem CO2 sink strength in a coastal wetland[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,310:12.
APA Wei, Siyu.,Han, Guangxuan.,Chu, Xiaojing.,Sun, Baoyu.,Song, Weimin.,...&Yu, Dongxue.(2021).Prolonged impacts of extreme precipitation events weakened annual ecosystem CO2 sink strength in a coastal wetland.AGRICULTURAL AND FOREST METEOROLOGY,310,12.
MLA Wei, Siyu,et al."Prolonged impacts of extreme precipitation events weakened annual ecosystem CO2 sink strength in a coastal wetland".AGRICULTURAL AND FOREST METEOROLOGY 310(2021):12.
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