青藏高原东缘高山森林-苔原交错带土壤微生物生物量碳、氮和可培养微生物数量的季节动态

刘洋, 张健, 闫帮国, 黄旭, 徐振锋, 吴福忠

Seasonal dynamics in soil microbial biomass carbon and nitrogen and microbial quantity in a forest-alpine tundra ecotone, Eastern Qinghai-Tibetan Plateau, China

LIU Yang, ZHANG Jian, YAN Bang-Guo, HUANG Xu, XU Zhen-Feng, WU Fu-Zhong

表2 植被类型(从暗针叶林到高山草甸)和季节(5-10月三次采样)及其交互作用对高山森林-苔原交错带10 cm深处土壤微生物生物量碳、氮和微生物数量的双因素方差分析结果

Table 2 Results of two-way ANOVA for the analysis of the main effects of vegetation types (from dark-conifer forest to alpine meadow), season (three times collections from May to October) and their interactions for soil microbial biomass C, N and microbe quantity determined in 10-cm depth soil layer in forest-alpine tundra ecotone

变量 Variable 植被 Vegetation 季节 Season 植被×季节 Vegetation×season df F p df F p df F p 微生物生物量碳 MBC 5 20.64 <0.001 2 481.75 <0.001 10 14.40 <0.001 微生物生物量氮 MBN 5 120.48 <0.001 2 7.44 0.004 10 20.21 <0.001 微生物生物量碳氮比 MBC/MBN 5 26.53 <0.001 2 541.92 <0.001 10 17.07 <0.001 细菌 Bacteria 5 86.20 <0.001 2 22.59 <0.001 10 7.16 <0.001 真菌 Fungi 5 55.36 <0.001 2 166.69 <0.001 10 14.13 <0.001 放线菌 Actinomycetes 5 51.18 <0.001 2 58.46 <0.001 10 14.37 <0.001