[Modification and its application of generalized Schumacher model].
Based on the concrete analysis on growth equations presented by others, a modified Schumacher growth equation was proposed as, which included Gompertz function, Schumacher equation and generalized Schumacher equation, and had stronger self-adaptability and practicality. The analytic character and adaptability of the modified Schumacher equation were analyzed. According to the genetic algorithms method, this model was used to fit the growth data of endangered plant of Tsuga longibracteata and Platycladus orientalis. The results showed that the modified Schumacher equation was not only better than Schumacher equation and generalized Schumacher equation significantly, but also better than classical Logistic model and Li's self-adaptive model. So it could be used to study the dynamics simulation for tree growth and dynamics law for population growth.
Hong
Wei
W
Fujian Agriculture and Forestry University, Nanping 353001, China.
Wu
Chengzhen
C
Yan
Shujun
S
D016015:Logistic Models; D008962:Models, Theoretical; D014197:Trees / Q000254:growth & development*