ZhangDengJiangEtAl2021

Référence

Zhang, J., Deng, L., Jiang, H., Peng, C., Huang, C., Zhang, M., Zhang, X. (2021) The effects of elevated CO2, elevated O3, elevated temperature, and drought on plant leaf gas exchanges: a global meta-analysis of experimental studies. Environmental Science and Pollution Research, 28(12):15274-15289. (Scopus )

Résumé

Global change significantly influences plant leaf gas exchange, which affects the carbon-water cycle of terrestrial ecosystems. However, the magnitudes of the effects of multiple global change factors on leaf gas exchanges are currently lacking. Therefore, a global meta-analysis of 337 published articles was conducted to determine the effects of elevated CO2 (eCO2), elevated O3 (eO3), elevated temperature (eT), and drought on plant leaf gas exchanges. The results indicated that (1) the overall responses of photosynthesis rate (Pn) and instantaneous water use efficiency (WUEi) to eCO2 increased by 28.6% and 58.6%. But transpiration rate (Tr) and stomatal conductance (gs) responded negatively to eCO2 (− 17.5% and − 17.2%, respectively). Furthermore, all Pn, gs, and WUEi responded negatively to eO3 (− 32.7%, − 24.6%, and − 27.1%), eT (− 23.2%, − 10.8%, and − 28.9%), and drought (− 53.6%, − 59.3%, and − 4.6%, respectively), regardless of functional groups and various complex experimental conditions. (2) Elevated CO2 increased WUEi combined with eO3, eT, and drought (26.6%, 36.0%, and 58.6%, respectively, for eCO2 + eO3, eCO2 + eT, and eCO2 + drought) and mitigated their negative impacts on Pn to some extent. (3) Plant form and foliage type play an important role in the responses of leaf gas exchanges. Trees responded mostly to eCO2, but responded least to eT in Pn, Tr, gs, and WUEi compared with shrubs and herbs. Evergreen broad-leaved species were more responsive to eCO2 and drought. (4) The stress level of each factor can also significantly influence the responses of leaf gas exchanges to environment change. Hopefully, the quantitative results are helpful for the further assessments of the terrestrial carbon-water cycle. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

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@ARTICLE { ZhangDengJiangEtAl2021,
    AUTHOR = { Zhang, J. and Deng, L. and Jiang, H. and Peng, C. and Huang, C. and Zhang, M. and Zhang, X. },
    JOURNAL = { Environmental Science and Pollution Research },
    TITLE = { The effects of elevated CO2, elevated O3, elevated temperature, and drought on plant leaf gas exchanges: a global meta-analysis of experimental studies },
    YEAR = { 2021 },
    NOTE = { cited By 0 },
    NUMBER = { 12 },
    PAGES = { 15274-15289 },
    VOLUME = { 28 },
    ABSTRACT = { Global change significantly influences plant leaf gas exchange, which affects the carbon-water cycle of terrestrial ecosystems. However, the magnitudes of the effects of multiple global change factors on leaf gas exchanges are currently lacking. Therefore, a global meta-analysis of 337 published articles was conducted to determine the effects of elevated CO2 (eCO2), elevated O3 (eO3), elevated temperature (eT), and drought on plant leaf gas exchanges. The results indicated that (1) the overall responses of photosynthesis rate (Pn) and instantaneous water use efficiency (WUEi) to eCO2 increased by 28.6% and 58.6%. But transpiration rate (Tr) and stomatal conductance (gs) responded negatively to eCO2 (− 17.5% and − 17.2%, respectively). Furthermore, all Pn, gs, and WUEi responded negatively to eO3 (− 32.7%, − 24.6%, and − 27.1%), eT (− 23.2%, − 10.8%, and − 28.9%), and drought (− 53.6%, − 59.3%, and − 4.6%, respectively), regardless of functional groups and various complex experimental conditions. (2) Elevated CO2 increased WUEi combined with eO3, eT, and drought (26.6%, 36.0%, and 58.6%, respectively, for eCO2 + eO3, eCO2 + eT, and eCO2 + drought) and mitigated their negative impacts on Pn to some extent. (3) Plant form and foliage type play an important role in the responses of leaf gas exchanges. Trees responded mostly to eCO2, but responded least to eT in Pn, Tr, gs, and WUEi compared with shrubs and herbs. Evergreen broad-leaved species were more responsive to eCO2 and drought. (4) The stress level of each factor can also significantly influence the responses of leaf gas exchanges to environment change. Hopefully, the quantitative results are helpful for the further assessments of the terrestrial carbon-water cycle. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature. },
    AFFILIATION = { School of Urban and Environment Science, Jiangsu Second Normal University, Nanjing, 211200, China; International Institutes for Earth System Science, Nanjing University, Nanjing, 210023, China; Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing, 210023, China; Center of CEF/ESCER, Department of Biological Science, University of Quebec at Montreal, Montreal, QC, Canada; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; College of Horticulture and Forestry Sciences, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023, China },
    AUTHOR_KEYWORDS = { Elevated CO2; Elevated O3; Elevated temperature; Experimental condition; Functional types; Leaf gas exchange; Meta-analysis },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s11356-020-11728-6 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096486748&doi=10.1007%2fs11356-020-11728-6&partnerID=40&md5=ebb4fd1c3d11a3eeeb0b5069505a32d6 },
}

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