长白山自然保护区阔叶红松林林隙干扰状况的研究

 本文研究了长白山自然保护区阔叶红松林林隙干扰的基本规律，得到了描述林隙干扰状况的一些重要参数。结果表明扩展林隙在阔叶红松林中所占的面积比例是27.36％，而实际林隙所占的面积比例为13.05％，林隙干扰的频率每年约为0.15％；林隙的分布格局是均匀式的。形成林隙最重要的方式是掘根风倒，其次为干基折断；大多数的林隙都是由1～4株形成木形成的，林隙形成木主要是由红松、水曲柳、蒙古栎和紫椴组成；阔叶红松林的主林层乔木在直径为40～60cm和高度为25～30m时，形成林隙的可能性最大。

GAP DISTURBANCE REGIME IN A BROADLEAVED KOREAN PINE FOREST IN THE CHANGBAI MOUNTAIN NATURAL RESERVE

This paper deals with the basic characteristic of gap disturbance in a broadleaved-korean pine forest in the Changbai Mountain Natural Reserve. Some important paraments related to the disturbance regimes were described. The result shows that expanded gaps occupied 27.36% and Canopy gaps occupied 13.05% of land area in the forest. The frequency of gap disturbance was 0.15% per year. The distribution pattern of gaps in the forest belonged to the uniform type. The most important manner of gap formation was uprooting blown down, and the secondly important was breakage at trunk base. Most of gaps were formed by 1～4 gap makers. Major gap makers in the forest were Pinus koraiensis, Fraxinus mandshurica, Ouercus mongolica and Tilia amurense. The probability of making gaps was greatest when the big trees in the canopy layer got D. B. H. 40～60cm and height 25～30m.