| 金沟岭天然和半天然混交林林分空间结构比较 |
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| 引用本文： | 张会儒,李春明,武纪成. 金沟岭天然和半天然混交林林分空间结构比较[J]. 科技导报(北京), 2009, 27(19): 79-84 |
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| 作者姓名： | 张会儒 李春明 武纪成 |
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| 作者单位： | 中国林业科学研究院资源信息研究所; |
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| 基金项目： | “十一五”国家科技支撑计划项目(2006BAD03A08);;引进国际先进农业科学技术计划(948计划)项目(2008-4-60) |
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| 摘 要： | 使用角尺度、混交度和大小比数3个林分空间结构参数,对长白山过伐林区特有的半天然落叶松(Larix olgensis)-云杉(Picea jazoensis)-冷杉(Abies nephrolepis)混交林和未受人为干扰的原始天然混交林进行了空间结构分析和比较。结果表明,两种林分具有相同的平均角尺度0.52,林木皆为团状分布;半天然落叶松云冷杉混交林的平均混交度为0.64,呈现中度混交特征;从胸径大小比数来看,林分中针叶树种具有胸径优势,尤其是云杉的胸径优势最突出,红松(Pinus koraiensis)则分化严重,生长处于劣势。原始天然混交林的平均混交度为0.83,高于半天然落叶松云冷杉混交林,呈现强度混交特征;从胸径大小比数看,阔叶树种胸径优势明显,针叶树种中只有冷杉处于优势,红松和云杉都处于劣势。
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| 关 键 词： | 天然混交林 半天然落叶松云冷杉混交林 角尺度 混交度 大小比数 |
Comparison of Spatial Structure for Natural and Semi-natural Mixed Forests in Jingouling Forestry Farm, Jilin Province of China |
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| ZHANG Huiru,LI Chunming,WU Jicheng Institute of Forest Resource Information Techniques,China Academy of Forestry,Beijing ,China. Comparison of Spatial Structure for Natural and Semi-natural Mixed Forests in Jingouling Forestry Farm, Jilin Province of China[J]. Science & Technology Review, 2009, 27(19): 79-84 |
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| Authors: | ZHANG Huiru LI Chunming WU Jicheng Institute of Forest Resource Information Techniques China Academy of Forestry Beijing China |
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| Affiliation: | ZHANG Huiru,LI Chunming,WU Jicheng Institute of Forest Resource Information Techniques,China Academy of Forestry,Beijing 100091,China |
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| Abstract: | Three indices (uniform angle index,mingling index and neighborhood comparison ratio) are used to describe and compare the spatial structure of the natural mixed forest undisturbed by human activities and the semi-natural mixed stand of larch (Larix olgensis)-spruce(Picea jazoensis)-fir(Abies nephrolepis) which only exists in the over-logged forest of Changbai Mountains. Results indicate that two stands have the same uniform angle index of 0.52,with tree distribution being clustered. The average mingling ind... |
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| Keywords: | natural mixed forest semi-natural mixed forest of larch-spruce-fir uniform angle index mingling index neighborhood comparison |
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