| 夏季自然高温对桉树光合速率和暗呼吸速率的影响 |
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| 引用本文： | 苏冬梅,廖飞勇.夏季自然高温对桉树光合速率和暗呼吸速率的影响[J].生态科学,2001,20(1). |
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| 作者姓名： | 苏冬梅 廖飞勇 |
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| 作者单位： | 中南林学院资环学院,湖南株州 412006 |
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| 摘 要： | 在湖南夏季的自然高温下，所测7种桉树的日平均净光合速率在12.56～27.85 mg*dm-2*h-1之间，日平均暗呼吸速率在6.06～22.39 mg*dm-2*h-1之间。高温对桉树净光合速率的影响依品种而异。樟脑桉和蓝桉的净光合速率最高峰值出现在35 ℃的气温下，而邓恩桉的净光合速率却受35 ℃气温的显著抑制。桉树暗呼吸速率并不随气温的升高而增大。
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| 关 键 词： | 桉树 夏季 高温 光合特性 |
Photosynthesis Properties of Seven Eucalyptus spp.at Summer Natural High Temperature |
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| SU Dong-mei,LIAO Fei-yong.Photosynthesis Properties of Seven Eucalyptus spp.at Summer Natural High Temperature[J].Ecologic Science,2001,20(1). |
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| Authors: | SU Dong-mei LIAO Fei-yong |
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| Abstract: | The photosynthetic properties of several Eucalyptus spp.were measured at summer high temperature in Hunan Province.The results showed that the daily average net photosynthetic rates of these several Eucalyptus spp.varied between 12.56～27.85 mg*dm-2*h-1,daily average dark respiration varied between 6.06～22.39 mg*dm-2*h-1.The effect of high temperature on the net photosynthetic rates varied with changing of variety of Eucalyptus sp.,Eucalyptus spp.,E.maidenii and E.camphora get their highest net photosynthetic rates at 35 ℃,while the photosynthesis of E.dunnii is remarkable restrained at 35 ℃.Dark respiration ratio of E.spp.does not change with the rising of temperature. |
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| Keywords: | Eucalyptus spp summer high temperature photosynthetic characteristic |
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