摘要
在秦岭旬阳坝林场和火地塘林区分别选择了油松林和锐齿栎林两种主要林型进行抚育间伐,采用对比分析的方法,就森林抚育对林分径阶分布的变化进行了研究。结果表明:抚育后的林分树种组成更加合理;林分株数在各径阶上的分布由正态分布变为顶峰偏左的曲线分布;林分林木在各径阶上的平均树高基本无变化;林分的质量得到了较大的提高;林内健康状况也得到了很大的改善。
Pinus tabulaeforrnis stands and Quercus aliena var. acuteserrata in Huoditang and Xun Yangba forest region were chosen to study comparatively the change of diameter grade distribution in- fluenced by tending. The result showed that the composition of species in stand became more reasona- ble after tending;every diameter grade number in the stand moved from normal distribution to the left of the peak curve distribution; average tree height in every diameter of the stand had no significant change;stand quality had got greatly improved;health conditions within the stand improved a lot also.
出处
《陕西林业科技》
2013年第4期23-27,33,共6页
Shaanxi Forest Science and Technology
关键词
森林抚育
油松
锐齿栎
径阶
Forest tending
Pinus tabulaeformis
Quercus aliena var. acuteserrata
diameter grade
