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通过细菌的分离培养和土壤性质的测定,分析了念青唐古拉山扎当冰川退缩前沿土壤中可培养细菌的多样性和土壤性质的变化.结果表明:土壤中可培养细菌的数量为104~105CFU.g-1,可培养细菌隶属于α-Proteobacteria、β-Proteobacteria、γ-Proteobacteria、Bacteroidetes和Actinobacteria 5个类群.随冰川退缩年代不同土壤中细菌多样性有明显变化,土壤的C、N含量与距冰川前沿的距离之间呈正相关,即土壤暴露时间越长,C、N含量越高.结果说明,冰川退缩前沿的土壤中存在着丰富的细菌资源,细菌的组成发生着动态的变化,同时也影响着土壤的理化性质.
Through the separation and culture of bacteria and the determination of soil properties, the diversity of cultivable bacteria and the change of soil properties in front of the retreating glacier in the Yaqingtangshan Mountains were analyzed.The results showed that the number of culturable bacteria in soil was 104 ~ 105CFU Proteobacteria, β-Proteobacteria, γ-Proteobacteria, Bacteroidetes and Actinobacteria were found to be able to cultivate bacteria.With the significant change of bacterial diversity in different soils during the retreat of glaciers, the contents of C, N and The distance from the front of the glacier is positively correlated, that is, the longer the soil exposure time, the higher the contents of C and N. The results show that there are abundant bacteria resources in the frontier of the glacier retreat, and the composition of the bacteria changes dynamically. Also affect the physical and chemical properties of soil.