OALib Journal期刊
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长白山阔叶红松林林分空间结构
DOI: 10.3724/SP.J.1145.2010.00529, PP. 529-534
Keywords: 林分结构,阔叶红松林,混交度,大小比数,角尺度,长白山
Abstract:
在长白山北坡自然保护区内,建立面积为1hm2的阔叶红松林永久标准样地,对胸径1cm以上的每株树木进行定位监测,用空间结构参数――混交度、大小比数和角尺度分析该林分的空间结构.结果表明:该林分树木个体总体上处于中度混交水平,处于乔木上层和中层的树种混交度以强度混交和完全混交为主,明显高于乔木下层树种的混交度;基于胸径计算的大小比数和基于树高计算的大小比数的结果基本一致,都能客观反映该林分在垂直方向上的分化;树木个体整体分布格局与树木大小密切相关,当树木个体起测径阶1cm≤dbh<6cm时,林分呈聚集分布的格局,当起测径阶dbh>6cm时,林分呈随机分布的格局.图1表4参25
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