高级检索
    何中声, 谷新光, 江蓝, 徐道炜, 刘金福, 李文周, 陈文伟. 戴云山南坡不同海拔森林土壤优势细菌群落特征及影响因素[J]. 北京林业大学学报, 2022, 44(7): 107-116. DOI: 10.12171/j.1000-1522.20200278
    引用本文: 何中声, 谷新光, 江蓝, 徐道炜, 刘金福, 李文周, 陈文伟. 戴云山南坡不同海拔森林土壤优势细菌群落特征及影响因素[J]. 北京林业大学学报, 2022, 44(7): 107-116. DOI: 10.12171/j.1000-1522.20200278
    He Zhongsheng, Gu Xinguang, Jiang Lan, Xu Daowei, Liu Jinfu, Li Wenzhou, Chen Wenwei. Characteristics and its influencing factors of forest soil dominant bacterial community in different elevations on the southern slope of Daiyun Mountain, Fujian Province of eastern China[J]. Journal of Beijing Forestry University, 2022, 44(7): 107-116. DOI: 10.12171/j.1000-1522.20200278
    Citation: He Zhongsheng, Gu Xinguang, Jiang Lan, Xu Daowei, Liu Jinfu, Li Wenzhou, Chen Wenwei. Characteristics and its influencing factors of forest soil dominant bacterial community in different elevations on the southern slope of Daiyun Mountain, Fujian Province of eastern China[J]. Journal of Beijing Forestry University, 2022, 44(7): 107-116. DOI: 10.12171/j.1000-1522.20200278

    戴云山南坡不同海拔森林土壤优势细菌群落特征及影响因素

    Characteristics and its influencing factors of forest soil dominant bacterial community in different elevations on the southern slope of Daiyun Mountain, Fujian Province of eastern China

    • 摘要:
        目的  探讨土壤细菌群落在戴云山保护区不同海拔梯度(900 ~ 1 500 m)分布特征,为理解海拔影响森林土壤结构和功能提供理论依据。
        方法  基于高通量测序探讨不同海拔土壤细菌群落组成及多样性,并分析环境因子对土壤优势细菌群落结构的影响过程。
        结果  (1)随海拔升高,土壤全磷含量总体呈逐渐递减;土壤有效磷含量整体呈单峰模式;土壤全碳和全氮含量呈双峰变化趋势。(2)不同海拔中土壤细菌优势菌门为变形菌门、酸杆菌门和放线菌门(相对丰度 > 10%)。(3)不同海拔梯度土壤细菌多样性指数如物种数、Chao1指数、Shannon-Wiener多样性指数和ACE指数沿海拔梯度呈先上升后下降的趋势,均在1 100 m处达到峰值,且达到显著水平(P < 0.05)。(4)微生物共现网络分析表明戴云山不同海拔土壤优势细菌群落具有明显模块化结构,关键类群包括变形菌门、酸杆菌门、放线菌门、拟杆菌门和疣微菌门的部分属,其中变形菌门的细菌关键类群最多。
        结论  海拔、坡度、pH值、土壤全氮、水解氮和土壤有效磷是驱动不同海拔森林土壤优势细菌群落结构及多样性的主要因子。

       

      Abstract:
        Objective  We aimed to explore the distribution characteristics of forest soil bacterial communities in different elevations (900−1500 m) in Daiyun Mountain, Fujian Province of eastern China.
        Method  We used high-throughput sequencing to study the composition and diversity of soil bacterial communities at different elevations, and analyzed the effect of environmental factors on soil dominant bacterial communities.
        Result  (1) With the increasing of elevation, the content of soil total phosphorus showed a monotonic decreasing trend, the content of soil available phosphorus showed an unimodal trend, and the contents of soil total carbon and nitrogen presented a bimodal distribution trend. (2) In Daiyun Mountain, the dominant phyla bacteria in soil were Proteobacteria, Acidobacteria and Actinobacteria (relative abundance > 10%). (3) The soil diversity indices, such as species number, Chao1 index, Shannon-Wiener index and ACE index, increased first and then decreased along the elevation gradients, reaching a maximum at 1100 m. (4) The co-occurrence network analysis further indicated that soil dominant bacterial community had an obviously modular structure at different elevations of Daiyun Mountain. The keystone taxa included the genera from the phylum of Proteobacteria, Acidobacteria, Actinobacteria, Bacteroidetes and Verrucomicrobia, and the phylum of Proteobacteria had the maximum keystone genera.
        Conclusion  The elevation, slope, pH value, soil total nitrogen, hydrolysable nitrogen, and available phosphorus are the main factors affecting the forest soil dominant bacterial community structure and diversity at the different elevations of Daiyun Mountain.

       

    /

    返回文章
    返回