摘要
[目的]研究山东赤松期望成熟龄。[方法]通过对一类清查材料的研判分析,得出赤松生长过程的拟合经验方程,即以赤松生长量为变量、时间为自变量的函数,通过对函数的求导等一系列数学运算,求出赤松生长的成熟龄。[结果]人工林期望成熟龄与国家标准比较接近,可以推行。人工林成熟龄定为61 a,天然林定为41 a。[结论]赤松期望成熟龄为51 a。
[ Objective ] To study anticipant mature age of Pinus tabulaeformis in Shandong. [ Method ] Through analysis on materials, the fitting empirical equation for growth process of P. tabulaeformis was obtained, namely with increment as variable, time as the independent variable function, by a series of mathematical operations, the mature age of P. tabulaeformis was obtained. [ Result ] The anticipant mature age of forest plantation was close to the national standard, so it could be implemented. The mature age of forest plantation was determined as 61 a, and that of natural forest was 41 a. [ Conclusion] The anticipant mature age of P. tabulaeformis forest is 51 a.
出处
《安徽农业科学》
CAS
2017年第3期184-186,共3页
Journal of Anhui Agricultural Sciences
关键词
成熟龄
经验方程
解析木
Mature age
Empirical equation
Parse wood
