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Interannual variability in net ecosystem carbon production in a rain-fed maize ecosystem and its climatic and biotic controls during 2005-2018

文献类型：期刊论文

作者Zhang, Hui1,2; Zhao, Tianhong2; Lyu, Sidan3; Wu, Hang1; Yang, Yang1; Wen, Xuefa3
刊名PLOS ONE
出版日期2021-05-10
卷号16期号:5页码:18
ISSN号1932-6203
DOI10.1371/journal.pone.0237684
通讯作者Zhao, Tianhong(zth@syau.edu.cn) ; Lyu, Sidan(lvsidan@igsnrr.ac.cn)
英文摘要Interannual variability (IAV) in net ecosystem carbon production (NEP) plays an important role in the processes of the carbon cycle, but the long-term trends in NEP and the climatic and biotic control of IAV in NEP still remain unclear in agroecosystems. We investigated interannual variability in NEP, expressed as annual values and anomalies, and its climatic and biotic controls using an eddy-covariance dataset for 2005-2018 for rain-fed spring maize in northeastern China. Average annual NEP was 270 +/- 31 g C m(-2)yr (-1), with no significant changes over time. The effects on interannual variability in NEP of gross ecosystem productivity (GEP) that was mainly controlled by soil water content (SWC) and leaf area index (LAI), were more than those of respiration (RE) that was controlled by temperature and LAI. Further, maximum daily NEP (NEPmax) that was dominated by summer vapor pressure deficit explained the largest fraction of annual anomalies in NEP, followed by carbon dioxide uptake period (CUP) that was defined by the beginning date (BDOY) and the end date (EDOY) of CUP. The variability in BDOY was mainly determined by spring precipitation and the effective accumulated temperature, and the variability in EDOY was determined by autumn precipitation, SWC and LAI. NEP may decrease with declining precipitation in the future due to decreasing GEP, NEPmax, or CUP, and irrigation and residues cover may be useful in efforts to maintain current NEP levels. Our results indicate that interannual variability in NEP in agroecosystems may be more sensitive to changes in water conditions (such as precipitation, SWC and VPD) induced by climate changes, while temperature may be an important indirect factor when VPD is dominated.
WOS关键词SUBTROPICAL CONIFEROUS PLANTATION ; SOIL-MOISTURE ; TEMPERATURE-DEPENDENCE ; DIOXIDE EXCHANGE ; LOESS PLATEAU ; WINTER-WHEAT ; FLUXES ; RESPIRATION ; WATER ; BALANCE
资助项目National Key Research and Development Program of China[2017YFC0503904] ; National Natural Science Foundation of China[41671257]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000664624400002
出版者PUBLIC LIBRARY SCIENCE
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/163751]  
专题中国科学院地理科学与资源研究所
通讯作者Zhao, Tianhong; Lyu, Sidan
作者单位1.Liaoning Meteorol Bur, Jinzhou Ecol & Agr Meteorol Ctr, Jinzhou, Peoples R China
2.Shenyang Agr Univ, Coll Agron, Shenyang, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Hui,Zhao, Tianhong,Lyu, Sidan,et al. Interannual variability in net ecosystem carbon production in a rain-fed maize ecosystem and its climatic and biotic controls during 2005-2018[J]. PLOS ONE,2021,16(5):18.
APA Zhang, Hui,Zhao, Tianhong,Lyu, Sidan,Wu, Hang,Yang, Yang,&Wen, Xuefa.(2021).Interannual variability in net ecosystem carbon production in a rain-fed maize ecosystem and its climatic and biotic controls during 2005-2018.PLOS ONE,16(5),18.
MLA Zhang, Hui,et al."Interannual variability in net ecosystem carbon production in a rain-fed maize ecosystem and its climatic and biotic controls during 2005-2018".PLOS ONE 16.5(2021):18.

入库方式： OAI收割

来源：地理科学与资源研究所

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