文献类型：期刊文献

中文题名：微生物代谢可塑性对退化湿地固碳的调控机制及生态恢复启示

英文题名：Regulating Mechanisms of Microbial Metabolic Plasticity on Carbon Sequestration in Degraded Wetlands and Its Implications for Ecological Restoration

作者：王汝苗[1,2] 李晶[1,2] 刘魏魏[1,2] 崔丽娟[1]

第一作者：王汝苗

机构：[1]湿地环境保护与生态修复全国重点实验室湿地生态功能与恢复北京市重点实验室中国林业科学研究院湿地研究所,北京100091;[2]中国林业科学研究院生态保护与修复研究所,北京100091

年份：2025

卷号：61

期号：7

起止页码：52-58

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：;北大核心:【北大核心2023】；

基金：“十四五”国家重点研发计划项目(2022YFF1301000)。

语种：中文

中文关键词：退化湿地;土壤碳循环;微生物碳固定;代谢可塑性;生态恢复

外文关键词：degraded wetland;soil carbon cycle;microbial carbon fixation;metabolic plasticity;ecological restoration

分类号：Q938.1;S714

摘要：湿地作为陆地生态系统的重要组成部分,在维持全球碳平衡和缓解气候变化方面发挥着不可替代的重要作用。然而随着全球气候变化与人类活动干扰加剧,湿地普遍面临退化威胁,尤其是在植被退化引起植物性碳源输入减少的情景下,以植物-异养微生物为主导的碳循环途径遭到破坏,土壤碳汇功能显著减弱。本文聚焦湿地退化背景下土壤微生物代谢方式的响应与调节过程,梳理异养与自养微生物在碳固存过程中的关键生态功能与作用机制;强调微生物通过调节碳源利用策略与代谢通路转换表现出的代谢可塑性,是其在资源受限条件下维持固碳能力的关键适应方式;进一步探讨了微生物代谢可塑性在湿地生态恢复早期阶段对土壤有机质快速积累、食物网结构重建及生态功能恢复的潜在贡献。本文旨在深化对退化湿地土壤碳循环调控机制的认识,为退化湿地的生态恢复与功能重建提供理论支撑与科学依据。
Wetlands,as a critical component of terrestrial ecosystems,play an indispensable role in maintaining global carbon balance and mitigating climate change.However,with the intensification of climate change and anthropogenic disturbances,wetland ecosystems are increasingly subject to degradation.In particular,vegetation loss leads to a substantial reduction in plant-derived carbon inputs,the carbon cycling pathways dominated by plant-heterotrophic microorganisms are disrupted,and the soil carbon sink capacity is significantly weakened.This review focuses on microbial metabolic responses and regulatory strategies under conditions of wetland degradation.We synthesize the ecological functions and carbon sequestration mechanisms of heterotrophic and autotrophic microorganisms,and highlight the metabolic plasticity-the capacity of microbes to flexibly adjust carbon utilization strategies and switch metabolic pathways which is a key adaptive strategy for sustaining carbon fixation under resource-limited conditions.We further explore the potential role of microbial metabolic plasticity in the early stages of wetland ecological restoration,particularly in facilitating the rapid accumulation of soil organic matter,re-establishing food web structures,and supporting ecosystem functional recovery.This work aims to advance our understanding of microbial regulation of soil carbon cycling in degraded wetlands and to provide a scientific basis for the restoration and functional reconstruction of these ecosystems.