马尾松套种细柄阿丁枫对林分涵养水源功能的影响

Effects of planting hardwood species Altingia gracilipes under the canopy of Pinus massoniana on water conservation function

探讨了马尾松林冠下套种细柄阿丁枫对不同林龄林分涵养水源功能的影响。结果表明,马尾松套种细柄阿丁枫10年后间伐强度为50%、35%、20%、0%的林分总持水量分别比套种前增加了8.81%、7.62%、7.10%、0.45%,套种20年后林分总持水量分别比套种前增加了16.07%、14.84%、14.04%、2.08%;套种后形成的异龄复层混交林林分持水能力显著提高,是马尾松纯林特别是以马尾松为主的生态公益林进行培育改造的较好方法。

Effects of planting Altingia gracilipes under the canopy of Pinus massoniana on water conservation function of stands at different ages were investigated. After 10 years of interplanting,when the thinning intensity was 50%,35%,20% and 0%,water holding capacity of stand increased by 8. 81%,7. 62%,7. 10%,and 0. 45% respectively; and after 20 years of interplanting,water holding capacity of stand increased by 16. 07%,14. 84%,14. 04%,and 2. 08% respectively. Therefore stand water holding capacity was significantly improved when the pure forest of P. massoniana turned into uneven-aged and mixed forest. Planting hardwood species under the canopy of P. massoniana was proved to be an ideal method to improve the function of water conservation.