METHOD FOR RENEWAL OF CONIFEROUS PLANTATIONS Russian patent published in 2006 - IPC A01G23/00 A01G23/02 

FIELD: forestry, in particular, specialized clearing cuttings, renewal cuttings and reforming of plantations.

SUBSTANCE: method involves first period during which final thinning of forest stand in clear needle and dark needle coniferous formation on technological corridors (log ways), loading grounds, and thinning of single dead trees and wormy trees in swaths are performed at total intensity of up to 20% of stock; second period during which forest stand in clear needle coniferous formation is uniformly thinned (single trees) over the entire area of cutting to relative degrees of left part of stock, optimal for natural reforestation, in differentiated manner by forest growing zones and subzones: in forest-tundra up to 0.4-0.5, in Northern and middle subzones of taiga up to 0.6-0.7, in forest-steep and steep zones up to 0.7-0.8; third and subsequent periods during which final thinning of forest stock is provided in swaths by thinning groups or grove of overmature and mature trees, provided that vital underbrush and young growth of target kinds are available under forest canopy, in amounts sufficient for reforestation at intensity of up to 30% of cutting area. Cutting procedures are periodically repeated in each 0.4-1.2 of longevity of age class. In dark needle formation, forest stock is thinned beginning from second period in aforesaid mode, but thinning is provided in each strip-swath of width equal to 1.5-2 average height of felled trees. During heavy crop years, soil is mineralized after each cutting period in swath sites free of underbrush, and during years when seed yield of target kinds is below two balloons of Kappler' scale, soil is mineralized and coniferous tree seeds are sown on mineralized strips. After reforestation cuttings provided by any of methods on technological corridors (log ways) and loading grounds, forest crops are planted at sites free of target kind underbrush.

EFFECT: provision for prevailing in forest stock of target coniferous trees by creating optimal environmental conditions for natural or artificial reforestation following cuttings.

7 cl, 1 tbl