冻融期巴音布鲁克高寒湿地土壤真菌群落变化

Changes of Soil Fungal Community in Bayinbuluk Alpine Wetland during Freeze-Thaw Period

为探究冻融期高寒湿地土壤真菌群落的演变特征,以巴音布鲁克高寒湿地沼泽土壤为研究对象,基于高通量测序技术,研究冻融期高寒湿地土壤真菌群落多样性以及群落结构的变化。结果表明,冻融期内真菌群落的可观测物种数、群落多样性和丰富度均显著增加(P<0.05);土壤真菌群落同时受控于土壤环境和土壤养分变化,土壤环境因子组(土壤温度、土壤湿度、雪被厚度)和土壤养分因子组(土壤总碳、土壤总氮、碳氮比)分别解释了土壤真菌群落结构变化的74.62%和70.74%。冻融期内高寒湿地土壤真菌群落能够做出积极响应,群落结构演变以适应冻融环境。

In order to explore the evolution characteristics of soil fungal community in alpine wetland during freeze-thaw period,the soil fungal community diversity and community structure changes in alpine wetland during freeze-thaw period were studied based on high-throughput sequencing technology,taking Bayinbuluke alpine wetland swamp soil as the research object.Results showed that:During freeze-thaw period,the number of observable species,community diversity and richness of fungal communities increased significantly(P<0.05);Soil fungal community was controlled by the changes of soil environment and soil nutrients at the same time.Soil environmental factors(soil temperature,soil humidity and snow cover thickness)and soil nutrient factors(soil total carbon,soil total nitrogen and carbon-nitrogen ratio)explained 74.62%and 70.74%of the changes of soil fungal community structure,respectively.During the freeze-thaw period,soil fungal communities in alpine wetlands could respond positively,and the community structure was evolving to adapt to the freeze-thaw environment.