摘要
在实测和前人研究的基础上，提出了新的杉木直径和高生长方程：Ｚ＝Ｚｍｔ／（Ｋ＋ｔ）．此方程表达形式简单，参数生物意义确切，模拟精确度高，符合和遵循林木生长随树龄（ｔ）变化的基本规律．方程参数Ｚｍ（直径或高生长极值）和Ｋ（林木生长特征系数）与立地指数Ｓ和密度指数ｎ的相关性分析结果反映了杉木生长从属于立地条件。
Based on field observations, measurements and data from available literatures, a new equation was proposed for describing China fir tree diameter and height growth ( Z ) with respect to tree age ( t ), Z=Z m t /( K+t ). This equation, with a simple form and two meaningful parameters, Z m (the upper limit of diameter or height growth) and K (the characteristic coefficient of tree growth), obeys the natural law of China fir growth and gives high accuracy in application. Correlation analyses of Z m and K with site index ( S ) and density index ( n ) reveal that forest growth is subject to the interaction of site condition, space limitation and time effect.
出处
《中南林学院学报》
CSCD
1999年第1期1-8,共8页
Journal of Central South Forestry University
基金
国家"八五"林业科技攻关专题
"九五"林业科技攻关专题
关键词
杉木直径
高生长
生长方程
林木生长
林木施肥
China fir
diameter growth
height growth
growth equation
growth characteristic coefficient
maximum growth
density index
site index
time effect
