| 升高气温对旱柳光合和生长的影响 |
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| 引用本文： | 何维明,董鸣.升高气温对旱柳光合和生长的影响[J].林业科学,2003,39(1):160-164. |
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| 作者姓名： | 何维明 董鸣 |
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| 作者单位： | 中国科学院植物研究所植被数量生态学开放研究实验室,北京,100093 |
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| 基金项目： | 中国科学院资源与生态环境研究重大项目 (KZ95 1-B1-10 8)，重点项目 (KZ95 2 -S1-12 6)资助 |
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| 摘 要： | 工业革命以来 ,大气ＣＯ2 含量增加了 30 % ,预计到 2 1世纪中叶大气ＣＯ2 含量将增加 1倍。与此同时 ,ＣＨ4、Ｎ2 Ｏ、ＣＦＣｓ等温室气体的排放也不断增加 (Ｖｉｔｏｕｓｅｋ ,1 994)。这些温室气体含量的增加必将导致全球性气候变化 (Ｖｉｔｏｕｓｅｋ ,1 994;Ｍｃｌｅｏｄｅｔａｌ.,1 999)。根据大气环流模型 (ｇｅｎｅｒａｌｃｉｒｃｕｌａｔｉｏｎｍｏｄｅｌｓ,ＧＣＭｓ)的预测 ,2 1世纪全球气温将可能平均升高 1 5～ 4 5℃ (Ｈｏｕｇｈｔｏｎｅｔａｌ.,1 996)。在 1 95 1～ 1 989年的约 40ａ间 ,中国半干旱区的平均气温升高了 0 5…
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| 关 键 词： | 旱柳 气温 荧光特征 气体交换 生长 分配 光合作用 |
| 修稿时间： | 2000年4月17日 |
THE EFFECTS OF INCREASING AIR TEMPERATURE ON PHOTOSYNTHESIS AND GROWTH IN SALIX MATSUDANA |
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| He Weiming\ Dong Ming.THE EFFECTS OF INCREASING AIR TEMPERATURE ON PHOTOSYNTHESIS AND GROWTH IN SALIX MATSUDANA[J].Scientia Silvae Sinicae,2003,39(1):160-164. |
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| Authors: | He Weiming\ Dong Ming |
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| Abstract: | To explore the effects of air temperature rise(ATR)on photosynthesis and growth in the native xeric tree species, Salix matsudana in semi\|arid Mu Us sandland,the temperature gradient was set up through using small solar dome to increase air temperature.ATR had no significant effects on initial fluorescence,maximum quantum yield,and the ratio of maximum fluorescence to initial fluorescence of the leaves of this species,but had significant influence on their variable fluorescence,photosynthesis rate,transpiration rate,water use efficiency,and the ratio of substomatal CO 2 to atmospheric CO 2.ATR affected plant biomass,plant height,leaf weight ratio,root weight ratio,specific leaf area,and leaf area ratio significantly,while had no significant effects on specific root length.Moderate ATR may be beneficial to accelerate the species' growth during growing season. |
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| Keywords: | Salix matsudana Air temperature rise(ATR) Fluorescence feature Gas exchange Growth and allocation Morphology |
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