TY JOUR TI THE FOREST STAND DENSITY INFLUENCE ON GROUND LAYER STRUCTURE IN YOUNG LARCH ARTIFICIAL PLANTATIONS OF DIFFERENT DENSITY KW larch KW grass-shrub cover KW forest stand density KW species composition JO Bulletin of KSAU AU Goncharova, I.A. AU Sobachkin, R.S. PY 2013 IS PB Krasnoyarsk State Agrarian University