LiPengWangEtAl2017

Référence

Li, M., Peng, C., Wang, M., Yang, Y., Zhang, K., Li, P., Yang, Y., Ni, J., Zhu, Q. (2017) Spatial patterns of leaf 13C and its relationship with plant functional groups and environmental factors in China. Journal of Geophysical Research: Biogeosciences, 122(7):1564-1575. (Scopus )

Résumé

The leaf carbon isotope ratio (δ13C) is a useful parameter for predicting a plant's water use efficiency, as an indicator for plant classification, and even in the reconstruction of paleoclimatic environments. In this study, we investigated the spatial pattern of leaf δ13C values and its relationship with plant functional groups and environmental factors throughout China. The high leaf δ13C in the database appeared in central and western China, and the averaged leaf δ13C was –27.15‰, with a range from –21.05‰ to –31.5‰. The order of the averaged δ13C for plant life forms from most positive to most negative was subshrubs > herbs = shrubs > trees > subtrees. Leaf δ13C is also influenced by some environmental factors, such as mean annual precipitation, relative humidity, mean annual temperature, solar hours, and altitude, although the overall influences are still relatively weak, in particular the influence of MAT and altitude. And we further found that plant functional types are dominant factors that regulate the magnitude of leaf δ13C for an individual site, whereas environmental conditions are key to understanding spatial patterns of leaf δ13C when we consider China as a whole. Ultimately, we conducted a multiple regression model of leaf δ13C with environmental factors and mapped the spatial distribution of leaf δ13C in China by using this model. However, this partial least squares model overestimated leaf δ13C for most life forms, especially for deciduous trees, evergreen shrubs, and subtrees, and thus need more improvement in the future. ©2017. American Geophysical Union. All Rights Reserved.

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@ARTICLE { LiPengWangEtAl2017,
    AUTHOR = { Li, M. and Peng, C. and Wang, M. and Yang, Y. and Zhang, K. and Li, P. and Yang, Y. and Ni, J. and Zhu, Q. },
    TITLE = { Spatial patterns of leaf 13C and its relationship with plant functional groups and environmental factors in China },
    JOURNAL = { Journal of Geophysical Research: Biogeosciences },
    YEAR = { 2017 },
    VOLUME = { 122 },
    NUMBER = { 7 },
    PAGES = { 1564-1575 },
    NOTE = { cited By 0 },
    ABSTRACT = { The leaf carbon isotope ratio (δ13C) is a useful parameter for predicting a plant's water use efficiency, as an indicator for plant classification, and even in the reconstruction of paleoclimatic environments. In this study, we investigated the spatial pattern of leaf δ13C values and its relationship with plant functional groups and environmental factors throughout China. The high leaf δ13C in the database appeared in central and western China, and the averaged leaf δ13C was –27.15‰, with a range from –21.05‰ to –31.5‰. The order of the averaged δ13C for plant life forms from most positive to most negative was subshrubs > herbs = shrubs > trees > subtrees. Leaf δ13C is also influenced by some environmental factors, such as mean annual precipitation, relative humidity, mean annual temperature, solar hours, and altitude, although the overall influences are still relatively weak, in particular the influence of MAT and altitude. And we further found that plant functional types are dominant factors that regulate the magnitude of leaf δ13C for an individual site, whereas environmental conditions are key to understanding spatial patterns of leaf δ13C when we consider China as a whole. Ultimately, we conducted a multiple regression model of leaf δ13C with environmental factors and mapped the spatial distribution of leaf δ13C in China by using this model. However, this partial least squares model overestimated leaf δ13C for most life forms, especially for deciduous trees, evergreen shrubs, and subtrees, and thus need more improvement in the future. ©2017. American Geophysical Union. All Rights Reserved. },
    AFFILIATION = { Center for Ecological Forecasting and Global Change, College of Forestry, Northwest A&F University, Yangling, China; Institute of Environment Sciences, Department of Biology Sciences, University of Quebec at Montreal, Montreal, QC, Canada; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China; College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, China },
    AUTHOR_KEYWORDS = { C3 plants; leaf δ13C; life forms; plant phylogeny type; water use efficiency },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1002/2016JG003529 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021753805&doi=10.1002%2f2016JG003529&partnerID=40&md5=6ba0e57516c253c2cbcb389c793fd9b7 },
}

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