arbre (1) régénération (1) papier (1) morphologie (1) lumière (1) jeune (1) survie (1) Regeneration (1) Morphology (1) Development (1) Survival (1) Sunshine (1) Paper (1) Morphology (1) Light (1) Growth (1) Fir (1) Competition (Biology) (1) Competition (1) Balsam fir (1) Size (1) Number (1) Models (1) Growth (1)