PDF(Pubmed)
Abstract：
Urban forests are essential for maintaining urban ecological stability. As decomposers, soil microorganisms play an indispensable role in the stability of urban forest ecosystems, promoting the material cycle of the ecosystems. This study used high-throughput sequencing technology to explore the bacteria in six forest stands, including Phyllostachys edulis (ZL), Metasequoia glyptostroboides (SSL), Cornus officinalis (SZY), mixed broad-leaved shrub forest (ZKG), mixed pine and cypress forest (SBL), and mixed broad-leaved tree forest (ZKQ). Meanwhile, the differences in fungal communities were investigated. The results show that ZL has the highest alpha diversity of bacterial communities, while its fungal community is the lowest; Proteobacteria is the most abundant bacterial phylum in the six forest stands; ZKQ has the highest fungal diversity. In addition, soil microbial communities are affected by environmental factors. Soil pH, organic matter (SOM), and available phosphorus (AP) significantly influence the compositions of urban forest soil microbial communities. This study revealed the differences in bulk soil (BS) microbial community structures among six forest stands and the relationship between environmental factors and soil microbial communities, which has important guiding significance for creating healthy and stable urban forests with profound ecological benefits.
摘要：
城市森林对于维持城市生态稳定至关重要。作为分解者，土壤微生物对城市森林生态系统的稳定起着不可或缺的作用,促进生态系统的物质循环。本研究利用高通量测序技术对6种林分中的细菌进行了探索,包括毛竹（ZL），水杉（SSL），山茱萸(SZY),阔叶灌丛混交林(ZKG)，松柏混交林(SBL)，和混合阔叶树林（ZKQ）。同时,研究了真菌群落的差异。结果表明，ZL具有最高的细菌群落α多样性，而其真菌群落最低；变形杆菌是六个林分中最丰富的细菌门；ZKQ具有最高的真菌多样性。此外,土壤微生物群落受环境因素的影响。土壤pH值,有机质(SOM)，有效磷(AP)对城市森林土壤微生物群落组成有显著影响。这项研究揭示了六个林分之间的散装土壤（BS）微生物群落结构的差异以及环境因子与土壤微生物群落之间的关系。对营造健康稳定、生态效益深厚的城市森林具有重要的指导意义。
