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本文以水势、束缚水含量、束╱自比值、水分亏缺、蒸腾速率、抗脱水力(用达恒重时间和残留含水率表示)等7项指标为基础数据,用聚类分析和主分量分析等数量方法,把干旱区生长的十九种主要乔灌木树种划分成四个类群;用极点排序法和综合评审法等方法排列十九个树种的抗旱性强弱顺序。同时,说明数量分类和排序等方法对多指标反映的植物生态生理特性进行分析是可能的,多指标综合的数量方法在生态生理学研究中的应用是有益的。
In this paper, seven indicators of water potential, bound water content, beam / self ratio, water deficit, transpiration rate, dehydration resistance (expressed as constant weight time and residual moisture content) Analysis of the number of methods, the growth of arid area of nineteen main shrub and shrub species is divided into four groups; pole sorting method and comprehensive assessment method of arrangement of drought resistance of nineteen species order. At the same time, it is possible to explain the eco-physiological characteristics of plants reflected by multiple indicators by means of quantitative classification and sorting methods. The application of quantitative methods with multiple indicators in ecophysiological research is beneficial.