五大连池火山岩土壤发育过程中根际细菌多样性分析

发布时间：2018-11-10 20:44

【摘要】：选取五大连池火山群中三座火山为研究对象,采用PCR-DGGEB联用技术研究火山岩土壤发育过程与根际细菌多样性间相关性。结果表明,随火山喷发后时间推移,三座火山南坡有机质和全氮含量先增后稳,北坡土壤有机质和全氮含量先增后减,南北坡土壤p H不断升高。运用Bio-Dap软件分析发现,随时间推移,三座火山南坡细菌丰富度和多样性指数变化趋势为先增后减,北坡为先减后增,南北坡均匀度变化趋势均先增后稳。采用SPSS软件作相关性分析,三座火山南北坡根际细菌多样性指数及丰富度与土壤有机质显著正相关(P0.05)。根际细菌群落多样性受火山岩土壤发育程度影响。
[Abstract]:Three volcanoes in the Wudalianchi volcanic group were selected as the research objects and the correlation between the soil development process of volcanic rocks and the rhizosphere bacterial diversity was studied by PCR-DGGEB technique. The results showed that the contents of organic matter and total nitrogen in the south slope of the three volcanoes increased first and then stabilized, and the soil organic matter and total nitrogen content in the north slope increased first and then decreased, and the soil pH increased continuously in the north and south slopes with the passage of time after the eruption. Using Bio-Dap software, it is found that the variation trend of bacterial richness and diversity index in the south slope of three volcanoes increases first and then decreases, then increases on the north slope, and the evenness of the north and south slopes increases first and then stabilizes over time. SPSS software was used to analyze the correlation between soil organic matter and bacterial diversity index and richness in the rhizosphere of the three volcanoes (P0.05). The diversity of rhizosphere bacterial community is affected by the development of volcanic soil.
【作者单位】：吉林农业大学生命科学学院;中国科学院东北地理与农业生态研究所;
【基金】：吉林省教育厅项目(2016176) 国家重点研发计划项目(2016YFC0501202) 吉林省科技厅项目(20160412017XH)
【分类号】：S154.3

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