Natural Regeneration in Pinus Montezumae Forests of Central Mexico

1-ha measurement plot 12 Trees/ha 4-ha treatment plot 5-cm diameter classes appears approximately average aya Tree ayacahuite in gap basal area increment based on 100 canopy CE San Juan central Chapingo cohort communities created Data DBH 5-cm classes determined diameter distribution distribution of Pinus disturbance dominated dynamics Ecology ejidos ESFT establishment estimated Figure final fire forest grass growing growth hardwoods harvest height important increased increment of Pinus Individual basal area inventory land m²/ha marking marking guide method Mexico Moderate Montezuma pine montezumae and Pinus occurs patterns percent period Pimis Pimus Pinus ayacahuite Pinus montezumae positioned Preharvest production projected Puebla range regeneration release residual tree retained Rodriguez San Juan Tetla saplings seed seedlings shelterwood silvicultural single-tree selection soil Spatial distribution species stand stand structure station study area successful Table trees per hectare