关键词: 油松, 人工林, 椽材, 密度

Abstract: According to the information of 337 sample plots of 20-25-year-old Chinese pine plantation at sapling stage, the diameters at breast height offorest trees which are at the standard of 4m or 2m rafter timber, have beendetermined in this paper. The regression equations of density and numbers ofsapling timber have also been established based on the site types, and thenumbers of 4m and 2m sapling timbers in different density stands have beenanalysed. The number of 4m sapling timber per unit area is positively correlated with the volume and economic value of sapling timber. The stand density and planting density have been proposed for the goal of sapling timberin Chinese pine plantation.

Key words: Chinese pine, Sapling, Density