Picea and Abies pollen percentages are more than 20[WTB3]%[WTBZ] in Picea or Abies forest and less than 5[WTB3]%[WTBZ] where Picea or Abies trees absent.

• 云、冷杉林中云杉、冷杉花粉高于20%25,无云杉植物存在时云、冷杉花粉低于5%25;