SURVIVAL AND GROWTH OF PRESERVED SPRUCE AND FIR REGROWTH IN CLEAR-CUT AREAS IN THE MIDDLE SIKHOTE-ALIN

Man'ко Yu.I.

Lesovedenie 2005; (1): 28-36

Materials are represented on the survival and growth of advanced regeneration obtained in monitoring of Picea jezoensis Carr. and Abies nephrolepis Maxim, regrowth in clear-cut areas of green mossy and mossy fir-spruce forests in the plateau located in river heads of the Bikin, Bol'shaya Peya, and Kaban'ya (the middle Sikhote-Alin) at an altitude of 850-1000 m above sea level (1993-2003). For the period under observation, 24.2% of spruce trees and 42.2% of fir trees were died, and nearly 50% of regenerated dark coniferous trees were recognized as healthy ones. The regrowth is adapted to conditions of clear-cut areas with difficulty. This process is complicated due to damages of the assimilative apparatus by spring-summer frosts, pests, and fungi. As a result, the increment of a central shoot is often absent. Later on, lateral shoot replaces this shoot, or several tops develop from dormant buds. The conclusion is made that in fir-spruce forests, selective and shelterwood fellings are more expedient.