摘要
以9个树种的11个水分生理指标为变量,经聚类分析归类,在此基础上用Bayes准则多类逐步判别分析技术.对初步分类的正确性进行判别,完成了对这9个树种在抗旱性方面的分类,并在分类的基础上得出树种的自由水、蒸腾速率、水势是决定树种抗旱性的主导因子,为干旱、半干旱地区选择造林树种提供理论依据。
Cluster analysis was employed for preliminary classification of 11 water physiology indexes (vari ables) of 9 species of trees. The accuracy of the preliminary classification was further determined with discriminant analysis of Bayes, and the classification of drought resistances of 9 species was complet ed. The results showed that the free water, transpiration rate and moisture potential of these species are leading factors for the determination of drought resistance. These will make a theoretical contribution to the selection of afforesting species in arid and semi-arid areas.
出处
《中国沙漠》
CSCD
北大核心
1993年第1期28-34,共7页
Journal of Desert Research
