微生物种群生物学
微生物
土壤有机质
溶解有机碳
环境科学
有机质
生态演替
生态系统
营养物
土壤水分
营养循环
兴安落叶松
土壤生态学
生态学
碳循环
陆地生态系统
土壤碳
农学
生物
土壤生物多样性
细菌
落叶松
遗传学
作者
Jianwei Li,Sun Xiaoqian,Ming Li,Jiying Zou,Hongfeng Bian
出处
期刊:Authorea - Authorea
日期:2022-01-08
被引量:1
标识
DOI:10.22541/au.164168547.72364780/v1
摘要
It is of great interest to elucidate the biogeographic patterns of soil microorganisms and their driving forces, which is fundamental to predicting alterations in microbial-mediated functions arising from environment changes. Although the vertical movement of dissolved organic matter (DOM) drives the cycle of nutrients such as soil carbon but, in the restored ecosystem, the relationship between DOM and soil microbial nutrient utilization remains to be determined. Here, we investigated the changes of soil microbial community at 0-40 cm depth profile in three stages (10-, 30-, 50-years) of succession in Larix olgensis plantations and the fluorescence spectrum composition of DOM. With the increase of soil depth, the signal source of microorganisms increases. In a coniferous forest soil environment, the possible main source of DOM in deep soil is the production of microbial metabolism. Difficulty in the decomposition of organic matter determines the distribution and composition of microorganisms. Increasing forest age makes bacteria and fungi more specific and bacterial-fungal associations greater. Overall, our work contributes to the understanding of factors underlying microbial community distribution in plantation forests and the importance of DOM quality in building microbial communities.
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