“微生物碳泵”作用下的土壤有机碳稳定性及其吸附特性研究进展  

Stability of soil organic carbon in the“microbial carbon pump”process and its adsorption characteristics:A review

作　　者：李芳芳[1,2] 李中文 李宇轩 代然 周丹丹 杨时玲[1,2] LI Fangfang;LI Zhongwen;LI Yuxuan;DAI Ran;ZHOU Dandan;YANG Shiling(Faculty of Environmental Science&Engineering,Kunming University of Science&Technology,Kunming 650500,China;Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control,Kunming 650500,China;Faculty of Civil Engineering&Mechanics,Kunming University of Science&Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500 [2]云南省土壤固碳与污染控制重点实验室,昆明650500 [3]昆明理工大学建筑工程学院,昆明650500

出　　处：《农业环境科学学报》2022年第6期1155-1163,共9页Journal of Agro-Environment Science

基　　金：国家自然科学基金青年基金项目(41907300,41703121);云南省科技计划项目(202001AU070088)。

摘　　要：土壤有机质,特别是其相对稳定的组分,是控制污染物尤其是有机污染物吸附稳定的关键因素。微生物介导下的有机质再合成产物,即“微生物碳泵”作用下的有机碳,对稳定性碳库有重要贡献,其打破了以植物衍生物碳复杂分子结构为主导的稳定性碳库的传统观点。因此,理解“微生物碳泵”作用下,有机碳稳定性机制及其与污染物的相互作用成为环境地学研究的新挑战。本文综述了不同微生物群落组成和无机矿物组分作用下,微生物来源的有机碳组成和性质及其稳定性研究;并重点强调“微生物碳泵”作用下,稳定性有机碳与污染物相互作用的研究进展。最后,展望了“微生物碳泵”作用下稳定性有机碳的未来研究方向,以期为提升土壤固碳能力、实现“固碳减排”举措、帮助土壤污染修复治理提供新思路。Soil organic matter(SOM),especially relatively stable organic matter,is a critical factor in controlling the sorption and sequestration of pollutants,particularly organic contaminants.Organic matter products produced by microorganisms are called organic carbon in the“microbial carbon pump”(MCP)process,which plays a significant role in the stable carbon pool.This contradicts the traditional view that the stable carbon pool is dominated by the complex molecular structures of plant derivatives.Therefore,understanding the mechanism of organic carbon stability under the action of the MCP and its interaction with pollutants has become a new challenge for environmental geoscience research.This paper reviewed the compositions,properties,and stabilization mechanism of microbial-derived carbon,as affected by different microbial communities and mineral properties.In addition,the interaction between stable organic carbon and pollutants in the MCP process was emphasized.Finally,we proposed several research prospects for SOM stabilization in the future,providing new ideas for improving soil carbon sequestration capacity,realizing carbon sequestration and emission reduction measures,and aiding soil pollution remediation and governance.

关 键 词：微生物碳泵 土壤有机碳 稳定性 污染物 

分 类 号：S153.6[农业科学—土壤学]