首页|念青唐古拉山扎当冰川退缩前沿土壤性质与可培养细菌多样性变化

念青唐古拉山扎当冰川退缩前沿土壤性质与可培养细菌多样性变化

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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104~105 CFU·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.
Changes in Soil Properties and Culturable Bacteria Diversity in Zhadang Glacier Foreland
Species diversity of culturable bacteria and the shifts of physicochemical properties of soil samples at different distances from the Zhadang Glacier foreland were investigated respectively by the culture method and physicochemical analyses. The results show that the amount of culturable bacteria ranges from 104 to 105 CFU · g-1. The culturable bacteria belong to the following groups: α-Proteobacteria, β-Proteobacteria, γ-Proteobacte-ria, Bacteroidetes and Actinobacteria. The diversity changes with glacial retreat. Shifts in the C and N content are correlated to distances. These mean that the longer the soil exposure, the more the C and N content. The results indicate that diverse bacteria exist in the glacier foreland and the composition of bacteria in soil changes dynamically; as a result, the nutritional status of soil will be affected.

Zhadang Glacierdeglaciated forelandculturable bacteriasoil properties

岳君、刘光琇、章高森、张威、徐世健

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兰州大学,生命科学学院,甘肃,兰州,730000

中国科学院,寒区旱区环境与工程研究所,沙漠与沙漠化重点实验室,甘肃,兰州,730000

扎当冰川 冰川退缩地 可培养细菌 土壤性质

国家自然科学基金国家自然科学基金国家自然科学基金中国博士后科学基金

30800154307703294097103420080430794

2010

冰川冻土
中国地理学会 中国科学院寒区旱区环境与工程研究所

冰川冻土

CSTPCDCSCD北大核心
影响因子:2.546
ISSN:1000-0240
年,卷(期):2010.32(6)
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