摘要
本文用太行山地区88块油松标准地资料,取改进的Chapman-Richards函数,运用有约束条件的非线性最小二乘法和改进平行线法求曲面回归方程参数的原理,建立一种以地位指数和年龄为解释变量的林分最大蓄积量收获模型,为立地质量的蓄积量指标评价和林业生产提供依据。
A maximum volume yield model, which takes site and age as the interpreting variables, was established on the basis of 88 experimental plots of Pinus tabulaeformis in Taihangsan Area. Improved Chapman-Richards function, nonlinear least squares method and method of improved parallel line were used to construct the model. It supplies a function for site quality evaluation using index of volume and forest production.
出处
《林业科学研究》
CSCD
北大核心
1992年第5期542-547,共6页
Forest Research
关键词
林分
蓄积量
收获模型
Pinus tabulaeformis stand maximum volume yield model nonlinear least square method method of parallel line Chapman-Richards function
