土壤氨基糖及影响其积累的因素综述

Microbial residues are one of the main sources of soil organic carbon (SOC) in terrestrial ecosystems, and their accumulation dynamics in the soil strongly affect the turnover of the soil carbon pool. Soil amino sugars (ASs), as currently known biomarkers for characterizing microbial residues, are usually used to establish the connection between microbial communities and the material cycle of ecosystems due to microbial heterogeneity and stability. The reasons and applications of amino sugars as indicators of microbial residues were reviewed, and the understanding of microbial residue indicators was deepened by simply comparing multiple microbial biomass indicators. Moreover, based on existing research, the relevant research progress on the factors influencing the accumulation of soil amino sugars was summarized, and it was pointed out that future research should expand the research scope while focusing on the accumulation mechanism of microbial residues affected by multiple factors, in order to provide an effective theoretical basis for more accurate carbon sink estimation, more scientific agricultural cultivation, forest management and other work in the context of future global climate change and other situations.

微生物残留物是陆地生态系统土壤有机碳（soil organic carbon, SOC）的主要来源之一，其在土壤中的积累动态强烈影响着土壤碳库的周转。土壤氨基糖（soil amino sugars, ASs）作为目前已知的表征微生物残留物的生物标志物，由于微生物异源性和稳定性，通常被用来建立微生物群落与生态系统物质循环之间的联系。回顾了氨基糖作为微生物残留物指标的原因与应用，通过简单比较多种微生物生物量指标，加深对微生物残留物指标的理解。并且基于现有研究，总结出土壤氨基糖积累因素的相关研究进展，指出将来的研究应在关注微生物残留物多因素影响积累机制的同时，扩大研究范围，以期为未来全球气候变化等情况下更精确的碳汇估算、更科学的农业耕作、森林管护等工作提供有效的理论依据。