生物多样性的海拔梯度分布格局及其形成机制一直是生物学和生态学理论研究的重要内容之一,也是全面理解生物多样性和生态系统对环境变化响应的重要内容(Wang et al.,2010)。长期以来,对动物和植物进行了大量的相关研究,并提出许多解释其分布格局和形成机制的假说和理论(Renaud et al.,2009)。目前,关于土壤微生物的海拔梯度分 The distribution pattern of altitude gradient and its formation mechanism of biological diversity has always been one of the important contents in the theoretical study of biology and ecology and also an important part of understanding the impacts of biodiversity and ecosystem on environmental change (Wang et al., 2010 ). For a long time, a great deal of relevant research has been done on animals and plants, and many hypotheses and theories explaining their distribution pattern and mechanism have been proposed (Renaud et al., 2009). At present, the altitude gradient of soil microorganisms is divided