摘要
本文以吉林省125块水曲柳人工林样地的625株优势木作为研究对象,建立树高-年龄模型,编制立地指数表。结果表明:在12个生长模型中,逻辑斯蒂模型H=24.6257/(1+6.6019e-0.0901 A)拟合效果较好(R 2=0.9611,AIC=2598.714),通过计算各龄阶树高标准差(S)和变异系数(CV),确定了基准年龄(A 0)为40年,指数级距1 m,划分6个指数级距,运用标准差调整法编制立地指数表,落点和卡方检验表明,所编制的立地指数表精度较高,能够客观地评价吉林省水曲柳人工林的立地质量。
In this paper,625 dominant trees from 125 plots of Fraxinus mandshurica plantation in Jilin Province were taken as research objects to establish tree height-age model and compile site index table.The results showed that among 12 growth models,the logistic model had good fitting effect:H=24.6257/(1+6.6019e-0.0901 A)(R 2=0.9611,AIC=2598.714).The baseline age(A 0)was determined to be 40 years by calculating the standard deviation(S)and coefficient of variation(CV)of the tree height at each age class.The index class spacing was 1m,and 6 index classes were divided.The site index table was compiled by the standard deviation adjustment method.The drop point test and chi-square test showed that the site index table had high accuracy and could objectively evaluate the site quality of F.mandshurica plantation in Jilin Province.
作者
马畅
周鹏程
王君
矫春晶
刘志宇
杨雨春
MA Chang;ZHOU Pengcheng;WANG Jun;JIAO Chunjing;LIU Zhiyu;YANG Yuchun(Jilin Provincial Academy of Forestry Sciences,Changchun 130033,China;Jilin Province Cross-regional Cooperation Science and Technology Innovation Center of Degraded Forest Ecosystem Restoration and Reconstruction,Changchun 130033,China;Northeast Native Tree Species Engineering Center,Harbin 150040,China;Forestry Investigation and Planning Institution of Jilin Province,Changchun 130022,China)
出处
《吉林林业科技》
2024年第6期1-7,20,共8页
Journal of Jilin Forestry Science and Technology
基金
吉林省科技厅项目(20230508006RC)。
关键词
水曲柳
人工林
立地质量
立地指数表
Fraxinus mandshurica
plantation
site quality
site index table
