不同疏伐强度对华山松母树林生长结实的效应

The Effects of Thinning Intensity on Growing and Fruiting of Pinus armandi Seed Production Forests

母树林的生长结实与疏伐有直接的关系 ;不同的疏伐强度能对母树林的生长发育和结实产生不同的作用。通过对华山松人工林不同疏伐强度的多年研究 ,展示了华山松母树林不同疏伐强度的生长、发育和结实情况 ,并提出了华山松母树林的合理综合疏伐强度指标。得出了改建华山松母树林应以郁闭度 0 5～ 0 6为控制疏伐强度的指标。

Thinning intensity will affect growing, developing and fruiting of seed production forests. Through years of study, the paper describes the growth, development and fruiting of Pinus armandi seed production forests under different thinning intensity, and it also proposes reasonable integrated thinning intensity plan for Pinus armandi seed production forests. The paper concludes that the canopy density should be 0.5～0.6 if rebuilding Pinus armandi seed production forests.