采脂对湿地松林分生长和经济效益的影响

Effect of Resin Tapping on Pinus elliottii Forest Growth and Economic Benefit

调查结果表明,采集松脂对天台低山生长的中龄湿地松林分的胸径、材积生长有显著的抑制作用,且非采脂林分经济收入的净现值要高出对照的采脂林分,因此,湿地松在采脂后由于林木生长量减少和木材质量降低而造成的经济效益损失值得引起重视。

Investigation on resin tapping of middle-aged Pinus elliottii forest at lower part of mountains in Tiantai, Zhejiang province demonstrated that it had negative effect on growth of their D.B.H and volume, meanwhile income of resin tapping stands was lower than that of no resin tapping.