长白落叶松人工林林分断面积生长模型的构建

Establishment of Stand Basal Area Growth Model of Larix olgensis Plantation

本文利用吉林森工集团红石林业有限公司2016年森林资源调查小班数据库,对长白落叶松人工林的林分断面积生长模型进行了构建,并进行了拟合精度检验和选择。结果表明:林分断面积随林龄增加呈“S”型增长,7个常见的林分断面积生长模型拟合结果均收敛,除了模型M7参数b和c不可用,其余模型参数拟合结果均达到显著水平。模型M5的各项拟合精度检验结果较好,选择模型M5即逻辑斯蒂模型为长白落叶松人工林的林分断面积生长模型。

In this paper,stand basal area growth models of Larix olgensis plantation were constructed by using the subcompartment database of the forest resource survey of Hongshi Forestry Limited Company of China Jilin Forest Industry Group in 2016,and the fitting accuracy test and selection were carried out.The results showed that the stand basal area of Larix olgensis plantation showed the S curve with the increase of the age,and the fitting results of seven common stand basal area growth models all converged.Except that parameters b and c of model M7 were not available,the fitting results of other model parameters reached the significant level.Model M5(Logistic model)was selected as the stand basal area growth model of Larix olgensis plantation.