摘要
采用样线法对宁夏贺兰山油松林林隙的基本特征进行研究。结果表明:小林隙(扩展林隙面积≤120 m^2和林冠空隙面积≤40 m^2)约占调查林隙总数的75%。所有的大林隙都有人为干扰(砍伐)的形成木,而只有1/3的小林隙有人为干扰(砍伐)的形成木。林隙形成年龄处于前期、中前期的较多,分别占到林隙总数的33.33%、41.67%。研究结果可为贺兰山保护区天然林的保护、持续利用提供参考。
Gap characteristics in Pinus tabulaeformis were studied with line transect methods in Ninxia Helan mountain nature re- serve. The results indicated that small gaps （extended gap area ≤ 120 m2 and canopy gap area ≤40 m2） accounted for 75% of the total forest gaps. Cutting gap makers are found in all large gaps. However,only one third of the small gaps contain cutting gap makers. Anaphase and prometaphase gaps account for 33.33% and 41.67% of the total forest gaps ,respectively. The conclusion can offor a reference for the protection and sustainable ciuilization in natural forests in Ninxia Helan mountian nuture reserve.
出处
《福建林业科技》
2016年第4期117-119,134,共4页
Journal of Fujian Forestry Science and Technology
基金
宁夏回族自治区自然科学基金(NZ14193)
关键词
油松
林隙特征
贺兰山
Pinus tabulaeformis
gap characteristic
Helan mountain
