摘要
[目的]研究6种针叶树种熏气后的生理指标变化，为绿化树种选择提供参考依据。[方法]选择哈尔滨市常见的樟子松、黑皮油松、长白落叶松、红皮云杉、杜松和爬地柏共6种针叶树种，模拟汽车尾气进行熏气试验，通过测定这6种针叶树种的相对电导率、叶绿素、游离脯氨酸、丙二醛含量的变化，分析它们对熏气的抗性。[结果]樟子松、黑皮油松、杜松、长白落叶松对熏气的抗性较强，红皮云杉和爬地柏对熏气的抗性较弱。[结论]樟子松、黑皮油松、杜松、长白落叶松更适合作为城市园林绿化的行道树，红皮云杉和爬地柏适宜作为公园、学校和居民区的景观绿化树。
Abstract
Objective] To research the physiological indexes changes of six kinds of coniferous trees after fumigation, and to provide references for the selection of greening tree species.[Method] Six coniferous trees commonly seen in Harbin were selected, which were Pinus sylvestris, Pi-nus tabuliformis var.mukdensis, Larix olgensis, Picea koraiensis, Juniperus rigida and Sabina procumbens.Automobile exhaust was simulated by fumigation test.Changes of relative electric conductivity, chlorophyll, free proline and malondialdehyde content were detected.And their resist-ance to fumigation was analyzed.[Result] Pinus sylvestris, Pinus tabuliformis var.mukdensis, Juniperus rigida and Larix olgensis had relatively strong resistance to fumigation;while Picea koraiensis and Sabina procumbens had relatively weak resistance.[Conclusion] Pinus sylvestris, Pinus tabuliformis var.mukdensis, Juniperus rigida and Larix olgensis are relatively suitable to be used as forestation trees in city;while Picea koraien-sis and Sabina procumbens are suitable to be used as the greening trees in garden, school and residential area.
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