| 青石冈林场木荷直径结构研究 |
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| 引用本文： | 孟伟,陈彩虹,胡焕香,吴疆,陆禹,丁思一.青石冈林场木荷直径结构研究[J].林业资源管理,2013(2):89-93. |
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| 作者姓名： | 孟伟 陈彩虹 胡焕香 吴疆 陆禹 丁思一 |
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| 作者单位： | 中南林业科技大学,长沙,410004 |
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| 基金项目： | 国家林业局行业公益性项目"南方集体林区次生林抚育间伐与高效利用技术研究"，湖南省"十二五"重点学科-森林经理学科资助项目 |
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| 摘 要： | 以湖南青石冈林场木荷人工林为研究对象,分析了木荷直径结构规律。运用威布尔分布(Weibull)、正态分布、对数正态分布和伽马(Gamma)分布进行直径拟合,并结合X2对拟合结果进行检验,结果表明:木荷林分平均胸径为10.4cm,在5.1～37.1cm之间变动,全距32.0cm,径阶分布范围不大;小径阶的林木数量居多(6～12cm),累计百分比已达到83.7%;4种分布函数中,威布尔分布拟合效果最好,其次是对数正态分布,但两者的差异不大,均可用于预测木荷林直径结构。
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| 关 键 词： | 直径结构 木荷 威布尔分布 对数正态分布 伽马分布 正态分布 |
Study on Diameter Structure of Schima superba in Qingshigang Forest Farm |
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| MENG Wei
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CHEN Caihong
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HU Huanxiang
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WU Jiang
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LU Yu
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DING Siyi.Study on Diameter Structure of Schima superba in Qingshigang Forest Farm[J].Forest Resources Management,2013(2):89-93. |
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| Authors: | MENG Wei CHEN Caihong HU Huanxiang WU Jiang LU Yu DING Siyi |
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| Abstract: | An analysis was made on the law of the Schima superba diameter structure in Hunan Qingshigang Forest Farm.The Weibull distribution,Normal distribution,Log-normal distribution and Gamma distribution were used for fitting stand diameter distribution and combined with X2 fitting result for examination.The results showed that the Schima superba forest average DBH was 10.4cm,the span of diameter class ranked 5.1 to 37.1cm in the range 32.0cm,which mainly were small diameter class(6~12cm),the accumulating percentage was 83.7%.Among the whole distribution functions,the Weibull distribution fitting effect is best,followed by the Log-normal distribution,but the difference between the two distributions was similar,all of them can be used to predict Schima superba diameter structure. |
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| Keywords: | diameter structure Schima superba Weibull distribution Normal distribution Log-normal distribution Gamma distribution |
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