Global patterns and controlling factors of tree bark C : N : P stoichiometry in forest ecosystems consistent with biogeochemical niche hypothesis

IF 8.3 1区 生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2024-09-15 DOI:10.1111/nph.20119
Haiyang Gong, Jordi Sardans, Heng Huang, Zhengbing Yan, Zhiqiang Wang, Josep Peñuelas
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Abstract

  • 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.
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树皮 C 的全球模式和控制因素 :N :符合生物地球化学生态位假说的森林生态系统中 C : N : P 的化学计量。
树皮在保护树木的物理和化学性质方面起着至关重要的作用,同时还有助于养分循环和碳封存。尽管树皮非常重要,但更广泛的生物地理格局和影响树皮碳.氮.磷.钾的潜在因素仍有待研究:N :P 的化学计量在很大程度上仍不为人所知。在这项研究中,我们从 550 个不同森林地点的 1240 条记录中汇编了一个包括树皮中碳(C)、氮(N)和磷(P)浓度的综合数据集,以系统分析树皮 C :N :P 的化学计量。结果发现,树皮中碳、氮、磷浓度的几何平均数分别为 493.17 ± 1.75、3.91 ± 0.09 和 0.2 ± 0.01 mg g-1。相应地,C :N、C :P 和 N :质量比分别为 135.51 ± 8.11、3313.19 ± 210.16 和 19.16 ± 0.6。树皮 C :N :除 N :P 比率除外。这些模式主要受气候、土壤条件和植物功能群的显著影响。然而,进化史对树皮 C :N :磷比例的影响超过了气候、土壤和植物功能群的影响,这与生物地球化学生态位(BN)假说一致。这些发现加深了我们对树皮养分比例空间分布的理解,对在不断变化的环境中建立全球森林生态系统养分循环模型具有重要意义。
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New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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