摘要
我们以杉木和马尾松为对象,研究了在相同立地类型中的树种代换评价方法。结果表明,由于不同树种对立地条件及其综合功能的反应不一,直接用地位指数建立配对代换方程的方法,不能取得正确结果;而通过数量化方法和多元分析技术,建立起以立地因子为依据的地位指数代换模型,并进而将地位指数转化为标准蓄积量,这样就能从生态基础上解决多树种的代换评价问题,并取得了满意的结果。
This paper, taking Chinese Fir & Masson's pine as examples (objects), studied the site quality evaluation by the substitution of tree species in the same site types. The result showed that directly adopting site index to establish substitution equation pairs, because different species make different responses to the site types and its comprehensive functions, can't get correct result. However, through the way of quantification and multi-variate analysis, we can develop site index substitution model on the basis of site factors and transform the index value into standard growing stock. Thereby, it is on the basis of ecology that the question of site quality evaluation through multi-species substitution has been solved with satisfaction.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1989年第5期410-419,共10页
Scientia Silvae Sinicae
关键词
树种
立地质量
代换
回归法
Site quality evaluation
Species substitution evaluation
Rechards function
Marquardt iteration
