Global patterns and controlling factors of tree bark C : N : P stoichiometry in forest ecosystems consistent with biogeochemical niche hypothesis
Gong, Haiyang (Southwest Minzu University)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Huang, Heng (Sun Yat-sen University. School of Ecology)
Yan, Zhengbing (Chinese Academy of Sciences. Institute of Botany)
Wang, Zhiqiang (Southwest Minzu University)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2024
Resum:	Bark serves crucial roles in safeguarding trees physically and chemically, while also contributing to nutrient cycling and carbon sequestration. Despite its importance, the broader biogeographical patterns and the potential factors influencing bark C : N : P stoichiometry in forest ecosystems remain largely unknown. - In this study, we compiled a comprehensive dataset comprising carbon (C), nitrogen (N), and phosphorus (P) concentrations in bark with 1240 records from 550 diverse forest sites to systematically analyze the large-scale patterns and the factors controlling bark C : N : P stoichiometry. - The geometric means of bark C, N, and P concentrations were found to be 493. 17 ± 1. 75, 3. 91 ± 0. 09, and 0. 2 ± 0. 01 mg g-1, respectively. Correspondingly, the C : N, C : P, and N : P mass ratios were 135. 51 ± 8. 11, 3313. 19 ± 210. 16, and 19. 16 ± 0. 6, respectively. Bark C : N : P stoichiometry exhibited conspicuous latitudinal trends, with the exception of N : P ratios. These patterns were primarily shaped by the significant impacts of climate, soil conditions, and plant functional groups. However, the impact of evolutionary history in shaping bark C : N : P stoichiometry outweigh climate, soil, and plant functional group, aligning with the biogeochemical niche (BN) hypothesis. - These finding enhance our understanding of the spatial distribution of bark nutrient stoichiometry and have important implications for modeling of global forest ecosystem nutrient cycles in a changing environment.
Ajuts:	Agencia Estatal de Investigación PID2022-140808NB-I00 Agencia Estatal de Investigación TED2021-132627B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-1333
Nota:	Altres ajuts: Fundación Ramón Areces grant CIVP20A6621
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Bark ; Carbon ; Forest ecosystems ; Nitrogen ; Phosphorus ; Stoichiometry
Publicat a:	The new phytologist, Vol. 244, issue 4 (November 2024) , p. 1303-1314, ISSN 1469-8137

DOI: 10.1111/nph.20119

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