Worldclim—19个气候因子
BIO1 = Annual Mean Temperature 年平均气温(℃)
BIO2 = Mean Diurnal Range (Mean of monthly (max temp - min temp)) 平均气温日较差(℃)
BIO3 = Isothermality (BIO2/BIO7) (×100) 等温性
BIO4 = Temperature Seasonality (standard deviation ×100) 气温季节性变动系数
BIO5 = Max Temperature of Warmest Month 最热月份最高温度(℃)
BIO6 = Min Temperature of Coldest Month 最冷月份最低温度(℃)
BIO7 = Temperature Annual Range (BIO5-BIO6) 最冷月份最低温度差(℃)
BIO8 = Mean Temperature of Wettest Quarter 最湿季度平均温度(℃)
BIO9 = Mean Temperature of Driest Quarter 最干季度平均温度(℃)
BIO10 = Mean Temperature of Warmest
Quarter 最暖季度平均温度(℃)
BIO11 = Mean Temperature of Coldest Quarter 最冷季度平均温度(℃)
BIO12 = Annual Precipitation 年降水量(mm)
BIO13 = Precipitation of Wettest Month 最湿月份降水量(mm)
BIO14 = Precipitation of Driest Month 最干月份降水量(mm)
BIO15 = Precipitation Seasonality (Coefficient of Variation) 降水量季节性变化(mm)
BIO16 = Precipitation of Wettest Quarter 最干季度降水量(mm)
BIO17 = Precipitation of Driest Quarter 最湿季度降水量(mm)
BIO18 = Precipitation of Warmest Quarter 最暖季度降水量(mm)
BIO19 = Precipitation of Coldest Quarter最冷季度降水量(mm)