| 长白山次生白桦林数量特征 |
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| 引用本文： | 苏东凯,谢小魁,刘正纲,于大炮,周莉,代力民. 长白山次生白桦林数量特征[J]. 东北林业大学学报, 2009, 37(10) |
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| 作者姓名： | 苏东凯 谢小魁 刘正纲 于大炮 周莉 代力民 |
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| 作者单位： | 中国科学院沈阳应用生态研究所,沈阳,110016 |
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| 基金项目： | 国家自然科学基金，国家科技支撑计划 |
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| 摘 要： | 对长白山1hm2次生白桦林样地的研究结果表明:样地内共有活立木2550株,分属于14科23种;从株密度、平均胸径及胸高断面积等分析看,白桦和落叶松在林分中占有绝对优势;样地内所有林木的径级分布为"S"型,白桦、落叶松和红松的径级分布近似于正态分布,水曲柳和春榆的径级分布近似于倒"J"型;从径级结构分析看,白桦和落叶松等先锋树种的小径级林木在林下分布很少,更新很差,而红松、水曲柳等寿命较长的树种在林下已经占有很大的比例,更新良好,随着演替的进展,它们将逐渐进入主林层;从主要树种的空间分布格局分析看,落叶松在样地中表现出了明显的聚集性分布格局,而白桦、水曲柳、红松和春榆没有表现出明显的聚集性分布格局.
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| 关 键 词： | 长白山 次生白桦林 数量特征 径级结构 空间分布格局 |
Quantitative Characteristics of A Secondary Betula platyphylla Forest in Changbai Mountains |
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| Su Dongkai,Xie Xiaokui,Liu Zhenggang,Yu Dapao,Zhou Li,Dai Limin. Quantitative Characteristics of A Secondary Betula platyphylla Forest in Changbai Mountains[J]. Journal of Northeast Forestry University, 2009, 37(10) |
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| Authors: | Su Dongkai Xie Xiaokui Liu Zhenggang Yu Dapao Zhou Li Dai Limin |
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| Affiliation: | Su Dongkai,Xie Xiaokui,Liu Zhenggang,Yu Dapao,Zhou Li,Dai Limin(Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,P. R. China) |
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| Abstract: | A plot with an area of 1 hectare was set up in a secondary birch forest in Changbai Mountains in 2007. All free-standing trees at least 1 cm in diameter at breast height (DBH) were measured,tagged,mapped and identified to species in the plot. Tree density,mean DBH,basal area at DBH,size class structure,and spatial distribution patterns of five tree species were analysed. Results show that there are 2550 living trees,belonging to 23 species and 14 families. The statistical results of tree density,mean DBH,an... |
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| Keywords: | Changbai Mountains Secondary birch forests Quantitative characteristics Size class structures Spatial distribution patterns |
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