贺兰山甲虫物种丰富度分布格局及其环境解释

杨贵军,王敏,杨益春,李欣芸,王新谱

Distribution patterns and environmental interpretation of beetle species richness in Helan Mountain of northern China

Yang Guijun,Wang Min,Yang Yichun,Li Xinyun,Wang Xinpu

表3 环境因子对甲虫物种丰富度分布的相对贡献

Table 3 The relative contribution of environmental factors for distribution of beetle species richness

环境因子 Environmental factor 解释率 Percentage of variance explained (%) 贡献率 Contribution (%) F P 年均温 Mean annual temperature (MAT) 34.8 57.0 96.6 0.002 年均降水量 Mean annual precipitation (MAP) 9.9 16.2 32.1 0.002 最冷月均温 Mean temperature of coldest month (MTCM) 3.8 6.1 13 0.002 年均潜在蒸散量 Mean annual potential evapotranspiration (PET) 3.6 5.9 13.3 0.002 海拔高差 Altitude difference (AD) 3.0 4.9 11.7 0.002 最热月均温 Mean temperature of warmest month (MTWM) 2.8 4.5 11.6 0.002 年均实际蒸散量 Mean annual actual evapotranspiration (AET) 1.5 2.5 6.5 0.002 年均太阳辐射 Mean annual solar radiation (MASR) 1.0 1.6 4.2 0.002 植被归一化指数 Normalized difference vegetation index (NDVI) 0.6 0.9 2.5 0.002 植被类型数 Vegetation diversity (VD) 0.3 0.5 1.4 0.048