摘要
分析了广东黑石顶自然保护区南亚热带常绿阔叶林林隙的形成方式及其特征．结果表明，在南亚热带常绿阔叶林中，由树木折干形成的林隙最为普遍，占５１．８６％，其次是由于掘根风倒而形成的，占３８．９８％．林隙大多由两株树木形成，平均每个林隙拥有形成木２．６３株．扩展林隙的大小多在１００～３００ｍ２之间，其中以２００～３００ｍ２者所占的面积比例最大，而以１００～２００ｍ２者所占的数量比例最大．冠空隙的大小多在１００ｍ２以下，其中以５０～１００ｍ２所占面积比例最大，而以５０ｍ２以下的所占数量比例最大．大部分林隙是在大约４０年前形成的，其中以１０年前形成的林隙最多．林隙形成木分布最多的径级在２０～３０ｃｍ之间，高度在２０～３０ｍ之间．每株形成木所能形成的扩展林隙面积为７２．９４ｍ２，冠空隙面积为２５．０６ｍ２．
This paper analyzed the manners of gap
formation and the characteristics of gaps in the south subtropical evergreen broadleaved forest
in Heishiding Reserve of Guangdong Province. The results showed that the most popular
manner of gap formation in the forest was stem breakage (51.86% of the total), and the second,
uprooting(39.98%). Most gaps were formed by two trees, averaging 2.63 trees per gap. The size
of most expanded gaps was in the range of 100～300m 2, the gaps of 200～300m 2 occupied
the biggest percentage in area, and those of 100～200m 2 occupied the biggest percentage in
number. The size of most canopy gaps was under 100m 2, the gaps of 50～100m 2 had the
biggest percentage in area, and those of <50m 2 had the biggest percentage in number. Most
of the gaps were formed 40 years ago, and less than 10 years were the most. The diameter at
breast height of most gap makers was 20～30cm,and their height were 20～30m. The average
area of expanded gap and canopy gap formed by one gap maker was 72.94m 2 and 25.06m 2,
respectively.
出处
《应用生态学报》
CAS
CSCD
1999年第4期385-388,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
关键词
林隙
树冠碧南亚
热带常绿阔叶林
Gaps,Canopy disturbance, South subtropical evergreen broadleaved
forest.
