北方森林土壤微生物化学计量不平衡响应机制研究进展
Response Mechanism of Soil Microbial Stoichiometry Imbalance in a Boreal Forest: A Review
摘要: 微生物与其资源间的化学计量不平衡决定了微生物的元素限制，这将改变其碳与养分的利用效率，最终影响微生物驱动的生物地球化学循环。人类活动引起的一系列全球变化，例如，气候变暖、大气CO2浓度升高、氮沉降等会显著改变环境中资源养分的可利用性，这将导致微生物与其资源间的化学计量不平衡，最终影响微生物的代谢和养分循环过程。作为陆地生态系统最稳定的碳库，高纬度的北方森林对气候变化高度敏感，其碳储存的变化将会改变全球碳收支。本文结合以往研究中微生物应对化学计量不平衡的适应策略，对全球变化背景下北方森林土壤微生物应对资源改变的适应机制及研究进展进行了综述，以期进一步理解微生物分解者对陆地生态系统养分循环的调节作用。
Abstract: The stoichiometric imbalance between microbes and their resources determines the element limi- tation of microbes, which will change their carbon and nutrient utilization efficiency, and ultimately affect the biogeochemical cycle driven by microbes. A series of global changes caused by human activities, such as climate warming, elevated atmospheric CO2 concentration, and nitrogen deposi-tion, will significantly alter the availability of nutrients in the environment, which will lead to changes in the stoichiometric imbalance between microorganisms and their resources, and ulti-mately affect microbial metabolism and nutrient cycling processes. As the most stable carbon pool in terrestrial ecosystems, the high-latitude boreal forests are highly sensitive to climate change, and changes in their carbon stocks will change the global carbon budget. In this paper, we reviewed the response mechanism and research progress of soil microorganisms in boreal forests to resource changes under the background of global change, combining with the adaptation strategies of microorganisms in response to stoichiometric imbalance in previous studies, with a view to further understanding the role of microbial decomposing in regulating nutrient cycling in terrestrial ecosystems.
文章引用：蒋帅, 王庆贵. 北方森林土壤微生物化学计量不平衡响应机制研究进展[J]. 土壤科学, 2021, 9(2): 45-53. https://doi.org/10.12677/HJSS.2021.92006

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