摘要
辽东栎(Quercus wutaishansea Mary.)是山西森林分布最广泛的阔叶树种之一,兼具生态价值和良好的经济价值。通过对山西省部分山区66株辽东栎进行树干解析,选取40株辽东栎生长数据作为建模样本,其余26株作为检验样本,选择常用的6个生长方程进行拟合。结果显示,Gompertz方程拟合辽东栎胸径生长,Richards方程拟合树高和材积生长效果最好。对所选模型进行独立样本检验,相应方程的拟合精度都在95%以上。利用模型绘制辽东栎生长曲线,得出山西省辽东栎在20-55年进入胸径生长的高峰期,9-33年进入树高生长高峰期,第51年时,材积的年生长量达到最高峰,当年生长量可达0.009m^(3)。辽东栎在生长83年后,其材积的连年生长量开始小于年平均生长量,达到适宜采伐树龄。
Quercus wutaishansea Mary,is one of the most widely distributed hardwood species in Shanxi forests.It has good ecological and economic value.Based on the 66 stem analyzed Quercus wutaishansea Mary,trees in different area,we choose 40 trees data as modeling samples,and the rest of 26 trees as test samples to do some match with 6 common growth equations.The results show that Gompertz equation fits the DBH of Quercus wutaishansea Mary,best and the Richards equation fits the trees height and volume best.Independent sample test was carried out on the selected model,and the fitting accuracy of corresponding equations was above 95%.We use the model to draw the growth curve of Quercus liaodong,it shows that Quercus wutaishansea Mary.entered the peak of DBH growth in 20-55 years,from 9 to 33 years,it entered the peak period of tree growth,and the annual volume growth peaked at 51a with 0.009m^(3) per year.After 83 years of growth,the volume of oak in Liaodong began to grow less than the average annual growth,reached the appropriate cutting age.
作者
陈天成
李新平
郝向春
任达
CHEN Tiancheng;LI xinping;HAO Xiangchun;REN Da(Shanxi Academy of Forestry and Grassland Sciences,Taiyuan 030012)
出处
《林业建设》
2022年第2期36-43,共8页
Forestry Construction
基金
国家重点研发计划项目(2017YFD0600602)
山西省林业重点研发计划专项(LYCX202101)。
关键词
辽东栎
生长模型
树干解析
生长曲线
Quercus wutaishansea Mary
growth model
stem analysis
growth curve
