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城市园林绿化树种的选择,是城市园林绿化成败的关键环节。为探究不同绿化植物对城市绿化树种适宜性的选择,以5种绿化植物(白丁香、华北珍珠梅、榆叶梅、山桃和红瑞木)为研究对象,通过测定与分析5种观赏植物的饱和亏缺及生理生化特性指标,利用隶属函数法综合评判出城市绿化树种。结果表明:(1)榆叶梅的自然饱和亏缺和临界饱和亏缺最大,与其他植物种差异显著(P<0.05);白丁香的需水程度最大。(2)Chla、Chlb、Chlt含量依次为:华北珍珠梅>榆叶梅>白丁香>红瑞木>山桃;类胡萝卜素差异不显著(P>0.05)。(3)POD、SOD和CAT活性最大的依次为:华北珍珠梅、红瑞木和山桃,均与其他植物种差异显著(P<0.05)。(4)MDA、Pro和REC含量最大的依次为:榆叶梅、红瑞木和白丁香,均与其他植物种差异显著(P<0.05)。(5)利用隶属函数法综合评定,适宜性最佳的绿化植物种为山桃。
The choice of urban landscaping species is the key to the success or failure of urban landscaping. In order to explore the suitability of different greening plants for urban greening tree species, five kinds of green plants (Lilac, Pear, Plum, Prunus persica and Rh. Deficit and physiological and biochemical characteristics of indicators, the use of membership function comprehensive assessment of urban afforestation species. The results showed that: (1) Ulmus pumila was the largest natural saturation deficit and critical saturation deficit, with significant difference (P <0.05) with other species; white clove water demand was greatest. (2) The contents of Chla, Chlb and Chlt were as follows: Pear plum> Ulmus pompano> Clove> Hongruimu> Peach; the difference was not significant (P> 0.05). (3) The highest activities of POD, SOD and CAT were as follows: Pear plum, Rhodiola sachalinensis and Peach were all significantly different from other species (P <0.05). (4) The contents of MDA, Pro and REC were the highest in the order of Ulmus pumila, Rhodiola sachalinensis and white clove, all of which had significant difference with other species (P <0.05). (5) According to the comprehensive evaluation of membership function method, the most suitable green plant species is Peach.