不同抚育强度对鹅耳枥林林木和林下植被生长的影响

Effects of different tending intensity on the growth of forest and understory vegetation in forest

该文以祖山林场中央财政森林抚育补贴试点项目外业调查数据、抚育后第5年和第10年的调查数据为基础,对不同抚育强度下鹅耳枥林林木和林下植被生长的影响进行了研究。结果表明:抚育强度对鹅耳枥林林木和林下植被生长有明显的促进作用,只有轻度抚育对林分树高影响不显著,除第10年胸径生长呈现显著差异外,其它强度的抚育对胸径、树高、单位面积蓄积量的增长均呈现极显著差异,依据鹅耳枥林的生长特点,抚育采取中度、强度抚育效果更好。合理的抚育强度可以加快鹅耳枥林乔木化状态进程,能够尽快提升林分的质量,增加林分蓄积量。

In this paper,based on the field survey data of the pilot project of central financial forest tending subsidy in Zushan Forest Farm and the survey data of the fifth and tenth year after tending,the effects of different tending intensity on the growth of hornbeam trees and understory vegetation were studied.The results showed that:Different tending intensities had significant promoting effect on the growth of hornbeam trees and undergrowth of vegetation.In hornbeam forests with different tending intensities,only light tending had no significant effect on the height of the stand,and the growth of DBH in the 10th year showed significant difference level.Besides,all tending intensities showed significant difference level on the growth of DBH,tree height and stock per unit area.According to the growth characteristics of hornbeam forest,it is better to adopt moderate tending and intensive tending.Reasonable tending intensity can accelerate the arborization of hornbeam,improve the quality of the stand as soon as possible,and increase the stock of the stand.