seasonal changes of the fungal and bacterial communities in a Chinese fir plantation. seasonal changes of the fungal and bacterial communities in a Chinese fir plantation

Microbial communities are the main drivers of soil N cycling, which directly mediate the supply and transformation of soil N. It has been suggested that consecutive plantation of Chinese fir significantly affected the forest productivity and soil quality, but the underlying mechanisms mediated by microorganisms are still obscure. In this study, soils were sampled from four types of forest, including first generation, second generation, third generation of Chinese fir plantation and a natural broadleaved forest. The diversity and composition of both fungal and bacterial communities were investigated here. Soil physical and chemical properties were also examined to disclose the factors that drive the changes in microbial communities.

微生物群落是土壤氮循环的核心驱动因子，可直接介导土壤氮素的供给与转化过程。已有研究表明，杉木（Chinese fir）连栽会显著影响森林生产力与土壤质量，但其中由微生物介导的潜在作用机制仍不明晰。本研究采集了四种林分的土壤样品，涵盖一代、二代、三代杉木人工林与天然阔叶林；针对土壤真菌与细菌群落的多样性及组成结构开展了调查分析，并同步测定了土壤理化性质，以揭示驱动微生物群落结构变化的关键影响因素。