OALib Journal期刊
ISSN: 2333-9721
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南京紫金山森林群落分层结构特征的小波分析
DOI: 10.3969/j.jssn.1000-2006.2008.02.004, PP. 17-22
Keywords: 小波分析,特征尺度,异质性,森林群落,紫金山
Abstract:
:利用小波分析技术,对南京紫金山森林群落样带中各层次的空间结构特征进行了研究,并分析了紫金山森林群落层次问结构特征的相关性o研究表明:紫金山森林群落中的各个层次都存在多个特征尺度,且同一层次的特征尺度间存在相对规律的倍数关系,显示群落层次间存在某种形式的嵌套等级结o构比较不同层次间的小波方差图,发现冠层盖度与灌木层基部盖度分别具有18m,36m和20m飞40m的特征尺度,具较高的可比性;两个层次结构特征与异质性水平沿样带的变化具有同步性,表现为灌木层结构特征随林冠层结构的变化而变化o乔木层立木基部盖度的分析结果与其他层次分析结果的相关性不明显,在相对较大尺度上才显示出规律性的分布特征,表明乔木的冠层结构比其着生位置更多地影响群落中灌木层的格局特征。
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