| 白石砬子自然保护区林木直径分布及其动态变化 |
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| 引用本文： | 吴可,殷鸣放,周永斌,郭元涛,刘月洋,张飞,李兆轩,商士达,吴春雷. 白石砬子自然保护区林木直径分布及其动态变化[J]. 东北林业大学学报, 2010, 38(5) |
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| 作者姓名： | 吴可 殷鸣放 周永斌 郭元涛 刘月洋 张飞 李兆轩 商士达 吴春雷 |
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| 作者单位： | 沈阳农业大学,沈阳,110161;辽宁省白石砬子国家级自然保护区管理局;沈阳农业大学 |
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| 基金项目： | 国家科技支撑计划项目 |
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| 摘 要： | 利用保护区30a长期固定观测资料,采用5种模型对白石砬子国家级自然保护区中5种林型的林木直径分布进行拟合,并对不同林型的拟合效果进行了分析;采用威布尔模型对林分30a的动态直径变化规律进行了研究。结果表明:几种主要林型的胸径静态分布都不同程度的呈现出天然林倒"J"形曲线的特征,所不同的是落叶松林模型拟合效果要好于其他林型,分析表明,威布尔分布模型和伽玛分布模型对保护区森林不同树种的拟合,有很好的适应性和灵活性;随着胸径、林龄的不断增大,直径分布形状也发生规律性的变化,不同林型的直径分布曲线表现出由指数形转向倒"J"形至近似正态分布,偏度由正偏趋于负偏,峭度逐渐变小的动态分布规律。
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| 关 键 词： | 直径分布 动态预测 白石砬子保护区 |
Diameter Distribution and Dynamic Changes of Trees in Baishilazi National Nature Reserve |
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| Wu Ke,Yin Mingfang,Zhou Yongbin,Guo Yuantao,Liu Yueyang,Zhang Fei,Li Zhaoxuan,Shang Shida,Wu Chunlei. Diameter Distribution and Dynamic Changes of Trees in Baishilazi National Nature Reserve[J]. Journal of Northeast Forestry University, 2010, 38(5) |
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| Authors: | Wu Ke Yin Mingfang Zhou Yongbin Guo Yuantao Liu Yueyang Zhang Fei Li Zhaoxuan Shang Shida Wu Chunlei |
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| Affiliation: | Wu Ke,Yin Mingfang,Zhou Yongbin(School of Forestry,Shenyang Agricultural University,Shenyang 110161,P. R. China),Guo Yuantao(Baishilazi National Nature Reserve in Liaoning Province),Liu Yueyang,Zhang Fei,Li Zhaoxuan,Shang Shida,Wu Chunlei(Shenyang Agricultural University) |
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| Abstract: | Five kinds of distribution models were used to fit the diameter distribution of five forest types by means of the data from 64 fixed sample plots in Baishilazi Nature Reserve for 30 years. The fitting effects of the models for different forest types were analysed,and the dynamic change of stand diameter for 30 years was studied by Weibull model. Results showed that the distribution of diameter at breast height for several main forest types presented an inverted J-shaped curve to various degrees,among which ... |
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| Keywords: | Stand structures Dynamic forecast Baishilazi Nature Reserve |
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