| 长白落叶松和樟子松等五种树种抗旱性的比较 |
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| 引用本文： | 冯玉龙,王文章.长白落叶松和樟子松等五种树种抗旱性的比较[J].东北林业大学学报,1998,26(6):16-20. |
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| 作者姓名： | 冯玉龙 王文章 |
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| 作者单位： | 东北林业大学 |
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| 摘 要： | 为研究树木的抗旱机制，文中长白落叶松，樟子松，红皮云杉，油松和水曲柳的抗旱性进行了探讨，结果表明，自然失水不同时期，各树种的水分参数不同，其变化也不同，各时期均以水曲柳和落叶松失水速率最大，红皮云杉次之，樟子松和油松水失水速率最小；与之相关的其它水分参数变化快到慢的顺序也如此，落叶松和水曲柳的质膜相对透性较小，樟子松和红皮云杉较大，油松质膜相对透性居中；脱水对各树种叶绿素代谢的影响由强到弱信次为水
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| 关 键 词： | 长白落叶松 樟子松 油松 红皮云杉 抗旱机制 |
Drought Resistance of Larix olgensis Henry and Pinus sylvestris var. mongolica etc. |
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| Feng Yulong,Wang Wenzhang,Ao Hong.Drought Resistance of Larix olgensis Henry and Pinus sylvestris var. mongolica etc.[J].Journal of Northeast Forestry University,1998,26(6):16-20. |
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| Authors: | Feng Yulong Wang Wenzhang Ao Hong |
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| Abstract: | In order to approach the mechanism of drought resistance, the drought resistane of Larix olgensis and Pinus sylvestris var. mongolica etc. were studied, the results indicate that at different period of natural loss of water, water parameters of different tree species were different, and their change speed were different either. At all period, the speed of water loss was the biggest in Fraxinus mandshurica Rupr and Larix olgensis Henry; that in Picea koraiensis Nakai came second, and that in Pinus sylvestris var. mongolica and Pinus tabulaeformis Carr. was the smallest. The speed of water loss had a direct bearing on other water parameters. The relative permeability of cell membrane was the smallest in Larix olgensis and Fraxinus mandshurica , that in Pinus tabulaeformis came second, and that in Pinus sylvestris var. mongolica and Picea koraiensis was the biggest. The order of the influence of dehydration on chlorophyll metabolism of different tree species from big to small was Fraxinus mandshurica , Picea koraiensis/Pinus tabulaeformis, Pinus sylvestris var. mongolica, Larix olgensis. The mechanism of drought resistance in Larix olgensis and Pinus sylvestris var.mongolica was different. Larix olgensis was drought-enduring tree species of dehydration-enduring; while Pinus sylvestris var. mongolica was drought-enduring tree species of dehydration-deferring. The mechanism of drought resistance in Picea koraiensis belonged to middle pattern, that in Fraxinus mandshurica was similar to Larix olgensis, while that in Pinus tabulaeformis was similar to Pinus sylvestris var. mongolica. |
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| Keywords: | Larix olgensis Henry Pinus sylvestris var mongolica Pinus tabulaeformis Carr Picea koraiensis Nakai Fraxinus mandshurica Rupr Mechanism of drought resistance |
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