摘要
通过对一类调查材料的研究,得出树木生长的拟合经验方程,即以树木生长量为变量、以时间为自变量的函数,通过对函数的求导等数学运算,求出树木生长的成熟龄,得出油松商品林期望成熟龄为61 a,油松公益林期望成熟龄为81 a,并按有关技术要求进行了油松林龄组划分。
Through the research on a kind of investigation materials,empirical equation of tree growth was obtained,taking tree growth as a variable,time as an independent variable,the mature age of tree growth was found through the derivation of mathematical operations.The results showed that mature age of Pinus tabulaeformis commercial forest was 61 a,the mature age of Pinus tabulaeformis forest was 81 a,and the age group was divided according to the technical requirements.
出处
《安徽农业科学》
CAS
2017年第9期155-157,共3页
Journal of Anhui Agricultural Sciences
关键词
成熟龄
经验方程
一类调查
油松
Mature age
Empirical equation
Continuous forest inventory
Pinus tabulaeformis
