Changes in plant biomass induced by soil moisture variability drive interannual variation in the net ecosystem CO2 exchange over a reclaimed coastal wetland
Chu, Xiaojing; Han, Guangxuan; Xing, Qinghui; Xia, Jianyang; Sun, Baoyu; Li, Xinge; Yu, Junbao; Li, Dejun; Song, Weimin
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
2019-01-15
Volume264Pages:138-148
KeywordPrecipitation Plant biomass Net ecosystem CO2 exchange Salt stress Waterlogged stress Reclaimed coastal wetland
MOST Discipline CatalogueAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
DOI10.1016/j.agrformet.2018.09.013
Contribution Rank[Chu, Xiaojing; Han, Guangxuan; Xing, Qinghui; Sun, Baoyu; Yu, Junbao; Song, Weimin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Chu, Xiaojing; Xing, Qinghui] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Xia, Jianyang; Sun, Baoyu] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China; [Li, Xinge] Henan Univ, Coll Environm & Planning, Kaifeng 475004, Henan, Peoples R China; [Yu, Junbao] Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China; [Li, Dejun] Chinese Acad Sci, Inst Subtrop Agr, Changsha 410215, Hunan, Peoples R China
Department海岸带环境过程实验室
AbstractChanges in the timing and magnitude of precipitation is a threat to agricultural productivity and farmland carbon stocks. However, the relationship between inter-annual variations in precipitation and net ecosystem CO2 exchange (NEE) remains to be clarified, particularly when combined with water-salt transport in reclaimed coastal wetland. Here, based on the eddy-covariance technique, we investigated the interannual variation in carbon dioxide exchange and its control mechanism over a reclaimed coastal wetland of the Yellow River Delta from 2010 to 2014. The coastal wetland functioned as a strong sink for atmospheric CO2, with the annual NEE of -229, -175, -142, -92 and -80 g C m(-2) in the 5 years from 2010 to 2014, respectively. Surprisingly, we find that large annual variation in net ecosystem exchange (NEE) can be predicted accurately using plant biomass. Plant biomass was driven by soil water content (SWC), with about 48%-80% seasonal variation of biomass attributed to SWC. During the early growing stage, high SWC accompanied with low salinity promoted plant biomass and NEE. While high SWC accompanied with increased waterlogged stress inhibited plant biomass and NEE during the middle growing stage. The same results were also observed in a field manipulation experiment over a nearby natural coastal wetland. Our study indicated that extreme climate accompanied with extreme drought and flooding may decrease carbon sequestration capacity of the reclaimed coastal wetland due to the increase in salinity.
SubtypeArticle
Funding OrganizationNational Nature Science Foundation of China [41671089] ; Science and Technology Service Network Initiative [KFJ-STS-ZDTP-023] ; Key deployment project of Chinese Academy of Sciences [KFZD-SW-112]
Indexed BySCI
Language英语
WOS KeywordYELLOW-RIVER DELTA ; CARBON-DIOXIDE EXCHANGE ; PHRAGMITES-AUSTRALIS ; LOESS PLATEAU ; RESPIRATION ; WATER ; PRECIPITATION ; PHOTOSYNTHESIS ; TEMPERATURE ; FLUXES
WOS Research AreaAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000452931700012
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24624
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_滨海湿地实验室
中科院海岸带环境过程与生态修复重点实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China;
4.Henan Univ, Coll Environm & Planning, Kaifeng 475004, Henan, Peoples R China;
5.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China;
6.Chinese Acad Sci, Inst Subtrop Agr, Changsha 410215, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Chu, Xiaojing,Han, Guangxuan,Xing, Qinghui,et al. Changes in plant biomass induced by soil moisture variability drive interannual variation in the net ecosystem CO2 exchange over a reclaimed coastal wetland[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,264:138-148.
APA Chu, Xiaojing.,Han, Guangxuan.,Xing, Qinghui.,Xia, Jianyang.,Sun, Baoyu.,...&Song, Weimin.(2019).Changes in plant biomass induced by soil moisture variability drive interannual variation in the net ecosystem CO2 exchange over a reclaimed coastal wetland.AGRICULTURAL AND FOREST METEOROLOGY,264,138-148.
MLA Chu, Xiaojing,et al."Changes in plant biomass induced by soil moisture variability drive interannual variation in the net ecosystem CO2 exchange over a reclaimed coastal wetland".AGRICULTURAL AND FOREST METEOROLOGY 264(2019):138-148.
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