湖南省木荷天然林直径结构规律研究

Study on the Diameter Structure Pattern of Natural Schima superba Forests in Hunan Province

利用湖南省2014年森林资源连续清查数据中12块木荷样地数据,探讨了木荷天然林直径结构规律。通过应用正态分布、对数正态分布、Weibull分布和Г分布对木荷天然林直径结构拟合,并对拟合结果进行x^(2)检验,结果表明:对数正态分布对12块样地的拟合效果最好,接受率为100%,其次是Г分布,接受率为83.33%。

In this study,the data of 12 pieces of sample of Schima superba in the national forest inventory data in Hunan Province in 2014 was used to explore the diameter structure pattern of natural Schima superba forests.By applying normal distribution,lognormal distribution,Weibull distribution and Gamma distribution to fit the diameter structure of natural Schima superba forests,and the chi-square test was carried out on the fitting results,the results showed that the lognormal distribution had the best fitting effect on the 12 pieces of sample,with an acceptance rate of 100%,followed by theГdistribution,with an acceptance rate of 83.33%.