人为管理措施诱导土壤微生物磷与土壤微生物碳氮内稳态解耦的代谢证据

doi:10.1093/jpe/rtad035

Journal of Plant Ecology ›› 2023, Vol. 16 ›› Issue (6): 0-rtad035.DOI: 10.1093/jpe/rtad035

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人为管理措施诱导土壤微生物磷与土壤微生物碳氮内稳态解耦的代谢证据

收稿日期:2023-10-07 修回日期:2023-10-11 出版日期:2023-12-01 发布日期:2023-10-28

Homeostatic evidence of management-induced phosphorus decoupling from soil microbial carbon and nitrogen metabolism

Lihua Zhang^1,2,*,†, Lizhi Jia³, Liyuan He⁴, David A. Lipson⁴, Yihui Wang⁴, Shunzhong Wang², Xiaofeng Xu^4,†

¹College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China;
²State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
³Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
⁴Biology Department, San Diego State University, San Diego, CA 92182, USA

Received:2023-10-07 Revised:2023-10-11 Online:2023-12-01 Published:2023-10-28
Contact: E-mail: zhanglihua788403@126.com
About author:†These authors contributed equally to this work.

摘要/Abstract

摘要： 微生物化学计量学理论能够预测微生物对碳(C)、氮(N)、磷(P)的同化作用具有比例耦合性。这种耦合性被量化为稳态值,用于计算内稳性系数(H)。C、N、P的H值协变量表明,微生物对C、N、P的同化作用是耦合的。因此,在本文中我们利用全球数据集研究微生物C、N、P的H值在不同生物群落中的时空动态变化。研究结果表明,土地利用和人为管理措施导致P 与C、N的代谢在时间和空间上解耦,并且我们利用结构方程模型(SEM)分析结果表明,土壤因子主导P的微生物动态平衡,而土壤元素含量则主导C和N的微生物动态平衡。利用机器学习算法得出的微生物P与微生物C和N的对比因子也证实了这一结果。总的来说,我们的研究强调了在营养循环中人为管理措施对微生物角色转变具有重要的影响。

关键词: 碳, 氮, 磷, 微生物的内稳性, 管理措施

Abstract: The theory of microbial stoichiometry can predict the proportional coupling of microbial assimilation of carbon (C), nitrogen (N), and phosphorus (P). The proportional coupling is quantified by the homeostasis value (H). Covariation of H values for C, N, and P indicates that microbial C, N, and P assimilation are coupled. Here, we used a global dataset to investigate the spatiotemporal dynamics of H values of microbial C, N, and P across biomes. We found that land use and management led to the decoupling of P from C and N metabolism over time and across space. Results from structural equation modeling revealed that edaphic factors dominate the microbial homeostasis of P, while soil elemental concentrations dominate the homeostasis of C and N. This result was further confirmed using the contrasting factors on microbial P vs. microbial C and N derived from a machine-learning algorithm. Overall, our study highlights the impacts of management on shifting microbial roles in nutrient cycling.

Key words: carbon, nitrogen, phosphorus, microbial homeostasis, management

. 人为管理措施诱导土壤微生物磷与土壤微生物碳氮内稳态解耦的代谢证据[J]. Journal of Plant Ecology, 2023, 16(6): 0-rtad035.

Lihua Zhang, Lizhi Jia, Liyuan He, David A. Lipson, Yihui Wang, Shunzhong Wang, Xiaofeng Xu. Homeostatic evidence of management-induced phosphorus decoupling from soil microbial carbon and nitrogen metabolism[J]. J Plant Ecol, 2023, 16(6): 0-rtad035.

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人为管理措施诱导土壤微生物磷与土壤微生物碳氮内稳态解耦的代谢证据

Homeostatic evidence of management-induced phosphorus decoupling from soil microbial carbon and nitrogen metabolism

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