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根据树木耐旱性这一复合性状的特点,建立了树木耐旱性的定量化研究模式,并通过这一研究模式综合评价了太行山区主要造林树种的耐旱特性.研究表明,太行山区造林树种的耐旱途径可分为两大基本类型,即高水势延迟脱水耐旱途径(如油松)和低水势忍耐脱水耐旱途径(如侧柏、元宝枫等),其中大多数树种的耐早机理属于后者.依据供试树种的耐旱特点,它们的耐旱能力从强至弱排列如下:侧柏、黄栌、元宝枫、栓皮栎、油松、沙棘、紫穗槐、刺槐和白蜡.
Based on the characteristics of the composite traits of drought tolerance of trees, a quantitative research model of drought tolerance of trees was established, and the drought resistance characteristics of the main tree species in Taihang Mountains were comprehensively evaluated through this research model. The drought-resistant pathways can be divided into two basic types, that is, the high water potential delayed dehydration and drought resistance (such as Pinus tabulaeformis) and the low water potential tolerant dehydration and drought tolerance pathways (such as oriental arborvitae, Acer truncatum), most of which are resistant to early The mechanism belongs to the latter.According to drought resistance characteristics of tested trees, their drought tolerance ability is arranged from strong to weak as follows: Platycladus orientalis, Pterocarya stena, Aloe vera, Quercus variabilis, Pinus tabulaeformis, Seabuckthorn, Amorpha fruticosa, Robinia pseudoacacia and white wax.