干旱对土壤微生物呼吸热适应影响的研究进展

doi:10.13287/j.1001-9332.202510.032

应用生态学报 ›› 2025, Vol. 36 ›› Issue (10): 2965-2977.doi: 10.13287/j.1001-9332.202510.032

• 生态系统碳氮生物地球化学循环过程专栏（专栏策划：林永新、郑棉海、倪祥银） • 上一篇下一篇

干旱对土壤微生物呼吸热适应影响的研究进展

刘源豪¹, 谌淑寅¹, 胡海波¹, 王妍¹, 张力文¹, 冯彦房², 冯渊圆^1*

¹南京林业大学南方现代林业协同创新中心, 南京 210037;
²江苏省农业科学院农业资源与环境研究所农业农村部长江下游平原农业环境重点实验室, 南京 210014

收稿日期:2025-01-06 修回日期:2025-07-09 发布日期:2026-05-04
通讯作者: *E-mail: Feng.Yuanyuan@hotmail.com
作者简介:刘源豪, 男, 1998年生, 博士研究生。主要从事全球变化与森林生态系统地下碳循环过程研究。E-mail: 207133508@qq.com
基金资助:
国家林业和草原局江苏长江三角洲农田防护林生态系统定位观测研究项目(2022132077)、江苏省2021年度碳达峰碳中和科技创新专项资金项目(BE2022305)、江苏省高等学校大学生创新创业训练计划项目(202410298006Z)和江苏省研究生科研与实践创新计划项目(KYCX251356)

Effects of drought on the thermal adaptation of soil microbial respiration: A review

LIU Yuanhao¹, SHENG Shuyin¹, HU Haibo¹, WANG Yan¹, ZHANG Liwen¹, FENG Yanfang², FENG Yuanyuan^1*

¹Co-Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China;
²Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China

Received:2025-01-06 Revised:2025-07-09 Published:2026-05-04

摘要/Abstract

摘要： 全球气候变化引发的干旱通过改变土壤微生物呼吸的热适应性,对碳循环产生复杂影响,既可能增加碳排放形成正反馈效应,也可能促进碳固存产生负反馈效应。本文综述了干旱对土壤微生物呼吸热适应的影响,并深入分析其类型与影响机制,总结现有研究成果及其争议点。干旱主要通过改变土壤团聚体结构、有机碳分子形态以及微生物群落组成等,显著影响土壤微生物的热适应性。由于不同气候区、生态系统类型及土壤条件的差异,干旱对微生物呼吸热适应性的影响呈现出区域异质性和复杂性特征。未来研究应注重模拟自然环境下的试验设计,采用多种类型的有机底物(如纤维素、草酸、木聚糖等)以获取更为准确的试验数据,并深入探讨干旱与其他环境因子(如CO₂浓度升高、紫外线辐射增强和氮沉降等)之间的协同作用,揭示其对微生物热适应性的综合影响。结合宏基因组学、DNA稳定同位素探针等高精度技术手段,进一步解析干旱调控土壤微生物呼吸热适应的微生物机制。

关键词: 干旱, 增温, 土壤有机碳, 底物耗竭, 微生物生活史策略

Abstract: Drought induced by global climate change affects the thermal adaptation of soil microbial respiration, which has complex consequences on the carbon (C) cycle. Drought can either enhance C emissions and create a positive feedback loop, or promote C sequestration and generate a negative feedback effect. We reviewed the effects of drought on microbial thermal adaptation, analyzed the underlying mechanisms, and summarized current research findings and related debates. Drought significantly influences microbial thermal adaptation through altering soil aggregate structure, organic carbon molecular composition, and microbial community structure. Due to variations in climatic zones, ecosystem types, and soil conditions, the impacts of drought on microbial thermal adaptation exhibit regional variety and complexity. Future research should focus on experimental designs that simulate natural environments, utilizing diverse organic substrates (e.g., cellulose, oxalic acid and xylan) to generate more accurate data and explore the synergistic effects of drought with other environmental factors (e.g., elevated CO₂ concentrations, increased ultraviolet radiation, and nitrogen deposition) to reveal their combined impacts on microbial thermal adaptation. Advanced techniques like metagenomics and DNA-stable isotope probing should be warranted to further reveal the microbial mechanisms involved in the regulation of drought on microbial thermal adaptation.

Key words: drought, warming, soil organic carbon, substrate depletion, microbial life history strategy

刘源豪, 谌淑寅, 胡海波, 王妍, 张力文, 冯彦房, 冯渊圆. 干旱对土壤微生物呼吸热适应影响的研究进展[J]. 应用生态学报, 2025, 36(10): 2965-2977.

LIU Yuanhao, SHENG Shuyin, HU Haibo, WANG Yan, ZHANG Liwen, FENG Yanfang, FENG Yuanyuan. Effects of drought on the thermal adaptation of soil microbial respiration: A review[J]. Chinese Journal of Applied Ecology, 2025, 36(10): 2965-2977.

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干旱对土壤微生物呼吸热适应影响的研究进展

Effects of drought on the thermal adaptation of soil microbial respiration: A review

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