Structure and form of spruce crown in drained spruce stand of shrubbery-sphagnum in different light regime

The study of forest cleaning measures effect on the crown structure and form in drained spruce stand left for cultivating in Kholmogorskiy district in the Arkhangelsk region has been done. The methodology is described as well as short characteristics of researching objects are given. The research results describe the changes of crown ecological coefficient, sprouts and needles biometrical rates, spruce height growth in the post-cleaning fall period.