Arbor layer is principal part of community biomass; it is 91% in brush forest and 99% in sedge forest.

• 乔木层生物量构成了群落生物量的主体,其中灌木落叶松林的乔木层生物量占到总生物量的91%25左右,而苔草落叶松林占到99%25左右。