Seasonal not annual precipitation drives 8-year variability of interannual net CO2 exchange in a salt marsh
Chu, Xiaojing1,2,3; Han, Guangxuan1,2,3; Wei, Siyu1,2,3; Xing, Qinghui4; He, Wenjun1,2,3; Sun, Baoyu1,5; Li, Xinge1,2,3; Hui, Dafeng6; Wu, Haitao7; Wang, Xiaojie1,2,3; Li, Peiguang1,2,3; Song, Weimin1,2,3
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
2021-10-15
Volume308Pages:9
Keywordsseasonal precipitation distribution NEE interannual variability plant biomass water-salt transport salt marsh
DOI10.1016/j.agrformet.2021.108557
Corresponding AuthorHan, Guangxuan(gxhan@yic.ac.cn)
AbstractSalt marshes are significant contributors to global "blue carbon" resources, and these habitats are sensitive to precipitation events due to periodically dry-wet alternation induced by tides. However, whether annual marsh-atmospheric CO2 flux responds more to annual or seasonal precipitation remains unclear. Here, eight years (2012-2019) of eddy covariance data were evaluated to determine typical CO2 budgets, and we assessed the effect of annual and seasonal precipitation on interannual net ecosystem CO2 exchange (NEE) in a salt marsh of the Yellow River Delta, China. The salt marsh was a sink for atmospheric CO2 in each of the eight study years, with an 8-year average NEE of -51.7 +/- 9.7 g C m(-2) a(-1) varying from -8 to -85 g C m(-2) a(-1). Annual NEE was mainly regulated by precipitation levels during the early growth stage of plants, which modulated maximal plant biomass accumulation via water-salt transport. Besides, a spring precipitation distribution experiment showed that wetter early growth stage of plants enhanced carbon assimilation capacity in the salt marsh by decreasing soil salinity and promoting plant biomass accumulation. These findings suggest that soil water-salt conditions induced by precipitation during the onset of the growing season are crucial for interannual variations of NEE in salt marshes.
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences, China ; National Nature Science Foundation of China ; International Science Partnership Program of the Chinese Academy of Sciences ; Natural Science Foundation of Shandong Province ; NSFC-Shandong Union ; Open Research Fund Program of Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta (Binzhou University) ; Yellow River Delta Ecological Research Station of Coastal Wetland, CAS
Indexed BySCI
Language英语
WOS KeywordSOIL RESPIRATION ; ENVIRONMENTAL CONTROLS ; COASTAL WETLAND ; CARBON ; ECOSYSTEM ; PLANT ; SALINITY ; EMISSIONS ; DYNAMICS ; FLUXES
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000692679900019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/29741
Collection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
中科院海岸带环境过程与生态修复重点实验室
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 YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Shandong, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Yellow River Delta Field Observat & Res Stn Coast, Dongying 257000, Peoples R China
4.Minist Ecol & Environm Peoples Republ China, Natl Marine Environm Monitoring Ctr, Dalian 116023, Peoples R China
5.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China
6.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA
7.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China
Recommended Citation
GB/T 7714
Chu, Xiaojing,Han, Guangxuan,Wei, Siyu,et al. Seasonal not annual precipitation drives 8-year variability of interannual net CO2 exchange in a salt marsh[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,308:9.
APA Chu, Xiaojing.,Han, Guangxuan.,Wei, Siyu.,Xing, Qinghui.,He, Wenjun.,...&Song, Weimin.(2021).Seasonal not annual precipitation drives 8-year variability of interannual net CO2 exchange in a salt marsh.AGRICULTURAL AND FOREST METEOROLOGY,308,9.
MLA Chu, Xiaojing,et al."Seasonal not annual precipitation drives 8-year variability of interannual net CO2 exchange in a salt marsh".AGRICULTURAL AND FOREST METEOROLOGY 308(2021):9.
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