自然干扰与森林林冠空隙动态

被引:27
作者
班勇
机构
[1] 中国林业科学研究院林业研究所北京
关键词
natural disturbance; forest dynamics; formation and closure of canopy gap; size and form of gap; environment heterogeneity;
D O I
10.13292/j.1000-4890.1996.0054
中图分类号
Q948 [植物生态学和植物地理学];
学科分类号
071012 ; 0713 ;
摘要
<正> 森林群落演替与物种共存一直是生态学研究的核心问题。Watt[47]对英国温带栎林的研究发现,天然林群落是一个由处于不同发育阶段的小斑块构成的镶嵌体。在对自然界普遍的"同质化"认识的时代,这个思想没有引起足够的重视。几十年来,由于没能正确对待森林更新和演替的初始条件,对森林的了解受到限制。 1 森林动态基本理论 1.1 群落演替平衡论关于群落演替存在着两种观点,即平衡论和非平衡论。Clements(1921)提出的演替理论认为,在自然环境和生物资源长期保持不变的前题下,群落朝向由区域气
引用
收藏
页码:43 / 49
页数:7
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