期刊论文

Growth Equation of Cyclobalanopsis glauca Based on Forest Growth Stage

中文

西北林学院学报

1001-7461

2018

33

6

204-209,286

10.3969/j.issn.1001-7461.2018.06.32

国家林业公益性行业科研专项（201504301）.

本校为第一机构

以青冈栎次生林为研究对象，采用有序聚类的方法对青冈栎生长阶段进行划分，构建各生长阶段的生长方程，并对生长方程的预测效果进行评价分析。结果表明，依据直径连年生长量划分的生长阶段：幼龄阶段1~36 a，中龄阶段37~52 a，其中幼龄阶段的胸径生长方程为 D 幼=25.1×（1-e -0.023 5 A ） 1.332 2 ，中龄阶段的胸径生长方程为 D 中= 17.5 1＋71.708 7×e -0.144 6 A ；依据树高连年生长量划分的生长阶段：幼龄阶段1~8 a，中龄阶段9~52 a，但各生长阶段的树高生长方程预测效果不理想。因此，利用直径连年生长量对青冈栎生长阶段进行划分具有一定的可行性，且各生长阶段构建的生长方程能有效地...

Taking the secondary forests of Cyclobalanopsis glauca as research object,the growth stage of C.glauca was divided by using the method of ordered clustering.The growth equations of each growth stage were constructed,and the prediction effect was evaluated and analyzed.It was found that the young stage was from 1 to 36 years,the medium stage was from 37 to 52 years based on the annual growth rate of the diameter.The growth equation of diameter at young stage was,at medium stage was .Based on the annual growth rate of the height,the young stage was from 1 to 8 years,medium stage was from 9 to 52...