Jiangsu Academy of Forestry, Nanjing, China.
Yangzhou University, Yangzhou, China.
PeerJ. 2024 Feb 29;12:e16987. doi: 10.7717/peerj.16987. eCollection 2024.
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 (ZL), (SSL), (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.
城市森林对于维持城市生态稳定至关重要。作为分解者，土壤微生物在城市森林生态系统的稳定性中发挥着不可或缺的作用，促进了生态系统的物质循环。本研究使用高通量测序技术，对 6 个林分（ZL）、（SSL）、（SZY）、阔叶混交林（ZKG）、松柏林（SBL）和阔叶混交林（ZKQ）中的细菌和真菌群落进行了研究。结果表明，ZL 的细菌群落具有最高的 alpha 多样性，而其真菌群落的多样性最低；在 6 个林分中，变形菌门是最丰富的细菌门；ZKQ 的真菌多样性最高。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）和有效磷（AP）显著影响城市森林土壤微生物群落的组成。本研究揭示了 6 个林分的土壤微生物群落结构的差异，以及环境因素与土壤微生物群落之间的关系，这对创造具有深远生态效益的健康稳定的城市森林具有重要的指导意义。
