Temporary domination of Khingam fir ((bud-Perula) Abies nephrolepis) in the Far East fir-spruce forests as one of the factors of their stability to environment changes

The frequent occurrence of forest stands with the prevalence of Khingam fir (Abies nephrolepis) (coverage is 8 %) is characteristic for the southern part of dark-coniferous forest areal in the Far East (Primorsky Krai). It is revealed that these Khingam fir forests are formed after the intensive drying up of Ayan fir tree (Pisea ajanensi) from the dominating crown layer, being replaced by Khingam fir (Abies nephrolepis) from the subordinated tiers.