摘要
以20个县291个侧柏人工林标准地数据作为编表材料,从7个数学模型中选定理查德(Richards)式H=11.455 1-e-0.025()A 1.286作为导向曲线,基准年龄为40年,指数级距为1m,运用相对优势高法导出立地指数表。拟合显著性检验和预报精度检验表明:所编地位指数表精度较高,可用于山东省侧柏人工林立地质量评价。
In this study,291 dominant trees data In various site conditions were used to construct site index table from 7 mathematical models.The results indicated that Richards curve equation had the best fit among the selected curves.The datum age was set to 40 years.Exponential distance was 1m.Site index table of Platycladus orientalis were developed by using the method of relative advantages of higher.Tested by fit significance and forecast accuracy,the results showed that the site index table had promising precision,and it could be used on plantations of Platycladus orientalis in Shandong Province
出处
《山东林业科技》
2014年第3期6-10,共5页
Journal of Shandong Forestry Science and Technology
关键词
山东省
侧柏
人工林
立地指数表
Shandong Province
Platycladus orientalis
plantations
site index table
