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该文研究了王朗自然保护区大熊猫栖息地内 6个亚高山针叶林样地的结构 ,分析了树干的大小、年龄和空间分布格局 ,运用树干胸径生长格局解释了林地干扰的历史 .研究结果表明 :王朗自然保护区亚高山针叶林的组成、结构与林地干扰历史息息相关 .林冠层的干扰严重影响着王朗自然保护区亚高山针叶林的组成和结构 .树干的风倒、掘根和折干形成了林窗 ,而林窗的形成在过去 2 0 0a时期内是一个相对连续的小尺度过程 .树倒和折干使林木平均每 6a有一个生长释压 .林窗促进了树木的更新 ,并使得林木林冠组成能够得以维持 .同时森林的更新受林下竹子同幼苗生长竞争和竹子生物学特性的影响
This paper studied the structure of six subalpine coniferous forests in the giant panda habitat of the Wanglang Nature Reserve, analyzed the size, age and spatial distribution patterns of the trunk, and explained the history of forest disturbance by using the growth pattern of trunk diameter at the trunk. The results showed that the composition and structure of the subalpine coniferous forest in Wanglang Nature Reserve are closely related to the disturbance history of the forestland.The disturbance of canopy layer seriously affected the composition and structure of the subalpine coniferous forest in Wanglang Nature Reserve.The windfall, The folding of the gap led to the formation of a gap, and the formation of the gap was a relatively continuous small-scale process over the past 200 years. Update and make the forest canopy composition can be maintained at the same time the forest is affected by the growth of understory bamboo seedling competition and the impact of biological characteristics of bamboo