安徽农业科学2025，Vol.53Issue(9)：88-92,5.DOI:10.3969/j.issn.0517-6611.2025.09.020
南江县古柏树龄与胸径回归模型研究
Research on Regression Model of Tree Age and Diameter at Breast Height of Ancient Cupressus funebris in Nanjiang County
摘要
Abstract
In order to know the relationship between age and diameter at breast height(DBH)of ancient Cupressus funebris in Nanjiang County and to determine the most fitting model,ancient Cupressus funebris in the study area were randomly sampled,and 53 core samples of intact 32 Cupressus funebris were obtained through growth cones to measure the growth and derive the dynamic breast diameter data,and nine models were used to fit the relationship between the DBH and the age of ancient Cupressus funebris,including linear,logarithmic,quadratic,cubic,composite,power function,growth,exponential,and logistic models.The results showed that the correlation between age and DBH of ancient Cupressus funebris in Nanjiang County was significant,and the power function model:y=1.992x1.192[R2=0.834,P<0.01,y is the age of the tree(a),and x is the diameter at breast height(cm)]was the most fitting model.It is applicable to the age calculation of ancient Cupressus funebris in Nanjiang County with a DBH less than 100 cm.关键词
古柏/树龄/胸径/生长量/回归模型Key words
Ancient Cupressus funebrisage/Tree age/DBH/Growth/Regression model分类
农业科技引用本文复制引用
马御风,严梗,徐洋,李守剑..南江县古柏树龄与胸径回归模型研究[J].安徽农业科学,2025,53(9):88-92,5.基金项目
四川省林业和草原调查规划院内部科研基金项目"四川省古树名木资源价值存续与价值维持(挖掘)关键技术研究及应用"(LGKT202103). （挖掘）
