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| 枣庄市黑杨直径结构的模拟研究 | |
| 引用本文： | 胡宝刚,周红敏,李世伟,殷昭海. 枣庄市黑杨直径结构的模拟研究[J]. 安徽农业科学, 2010, 38(23): 12901-12902 |
| 作者姓名： | 胡宝刚 周红敏 李世伟 殷昭海 |
| 作者单位： | 1. 山东省枣庄市市中区林业局,山东枣庄,277100 2. 浙江省龙泉市林业科学研究所,浙江龙泉,323700 3. 山东省枣庄市市中区农业局,山东枣庄,277100 |
| 摘 要： | 分析了黑杨树的直径结构特征,分别利用5种分布函数即正态分布、Weibull分布、Gamma分布、对数正态分布以及Logistic分布对黑杨树林的直径分布进行了拟合,同时用卡方统计量对5种分布进行了检验。拟合结果和检验结果一致表明,在这5个拟合分布函数中,Weibull分布用于拟合黑杨树林分直径分布的效果最好,Gamma分布的拟合效果次之。 |
| 关 键 词： | 直径结构 黑杨 正态分布 Weibull分布 Gamma分布 对数正态分布 Logistic分布 |
Simulation Study on Diameter Structure of Populus nigra Stand in Zaozhuang City |
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| HU Bao-gang et al. Simulation Study on Diameter Structure of Populus nigra Stand in Zaozhuang City[J]. Journal of Anhui Agricultural Sciences, 2010, 38(23): 12901-12902 | |
| Authors: | HU Bao-gang et al |
| Affiliation: | HU Bao-gang et al (Forestry Bureau of Central District,Zaozhuang,Shandong 277110) |
| Abstract: | Diameter structural characteristics of Populus nigra stands were analyzed and diameter distribution were fitted by five kinds of distribution functions,that are normal distribution,Weibull distribution,Gamma distribution,lognormal distribution and Logistic distribution. Meanwhile,chi-squared statistic was used to test five kinds of distribution. The consistent result showed that:concerning the diameter distribution of Populus nigra stands,Weibull distribution simulates much better than that of others,next i... |
| Keywords: | Diameter structure Populus nigra stand Normal distribution Weibull distribution Gamma distribution Lognormal distribution Logistic distribution |
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