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    Seasonal variations in carbon, nitrogen and phosphorus concentrations and C:N:P stoichiometry in different organs of a Larix principis-rupprechtii Mayr. plantation in the Qinling Mountains, China

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    Authors
    Li, Haliang
    Crabbe, M. James C.
    Xu, Fuli
    Wang, Weiling
    Ma, Lihua
    Niu, Ruilong
    Gao, Xing
    Li, Xingxing
    Zhang, Pei
    Ma, Xin
    Chen, Haikui
    Show allShow less
    Affiliation
    Northwest A&F University
    Oxford University
    Beifang University of Nationalities
    University of Bedfordshire
    Chinese Academy of Sciences
    Issue Date
    2017-09-22
    Subjects
    accuracy
    
    Metadata
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    Abstract
    Understanding how concentrations of elements and their stoichiometry change with plant growth and age is critical for predicting plant community responses to environmental change. Weusedlong-term field experiments to explore how the leaf, stem and root carbon (C), nitrogen (N) and phosphorous (P) concentrations and their stoichiometry changed with growth and stand age in a L.principis-rupprechtii Mayr. plantation from 2012–2015 in the Qinling Mountains, China. Our results showed that the C, N and P concentrations and stoichiometric ratios in different tissues of larch stands were affected by stand age, organ type andsampling month and displayed multiple correlations with increased stand age in different growing seasons. Generally, leaf C and N concentrations were greatest in the fast-growing season, but leaf P concentrations were greatest in the early growing season. However, no clear seasonal tendencies in the stem and root C, N and P concentrations were observed with growth. In contrast to N and P, few differences were found in organ-specific C concentrations. Leaf N:P was greatest in the fast-growing season, while C:N and C:P were greatest in the late-growing season. No clear variations were observed in stem and root C:N, C:P andN:Pthroughout the entire growing season, but leaf N:P was less than 14, suggesting that the growth of larch stands was limited by N in our study region. Compared to global plant element concentrations and stoichiometry, the leaves of larch stands had higher C, P, C:NandC:PbutlowerNandN:P,andtherootshadgreater PandC:NbutlowerN,C:Pand N:P. Our study provides baseline information for describing the changes in nutritional elements with plant growth, which will facilitates plantation forest management and restoration, and makes avaluable contribution to the global data pool on leaf nutrition and stoichiometry.
    Citation
    Li H, Crabbe, MJC, Xu F, Wang W, Ma L, Niu R, Gao X, Li X, Zhang P, Ma X, Chen H (2017) 'Seasonal variations in carbon, nitrogen and phosphorus concentrations and C:N:P stoichiometry in different organs of a Larix principis-rupprechtii Mayr. plantation in the Qinling Mountains, China', PLoS One, 12 (9).
    Publisher
    Public library of science
    Journal
    PLoS One
    URI
    http://hdl.handle.net/10547/622274
    DOI
    10.1371/journal.pone.0185163
    Additional Links
    https://doi.org/10.1371/journal.pone.0185163
    Type
    Article
    Language
    en
    ISSN
    1932-6203
    ae974a485f413a2113503eed53cd6c53
    10.1371/journal.pone.0185163
    Scopus Count
    Collections
    Environmental science

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