| UV-B辐射对南亚热带森林木本植物幼苗生长的影响 |
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| 引用本文： | 陈章和,朱素琴,李韶山,郭志华,张德明.UV-B辐射对南亚热带森林木本植物幼苗生长的影响[J].云南植物研究,2000,22(4):475-483. |
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| 作者姓名： | 陈章和 朱素琴 李韶山 郭志华 张德明 |
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| 作者单位： | 华南师范大学生物系,广东,广州,510631 |
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| 基金项目： | 国家自然科学基金项目!(396 70 138)，国家自然科学基金重大项目!(39899370 )，中国科学院重大项目!(KZ95 1-B1- 110 )资助 |
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| 摘 要： | 研究了UV -B辐射对广东省南亚热带森林木本植物九节、鸭脚木、猴耳环、半枫荷、山乌桕和绿化树种大叶合欢幼苗生长的影响。实验结果表明 ,UV -B辐射降低叶片光合色素的含量 ;显著降低幼苗的净光合速率、蒸腾速率和气孔导度 ;降低干物质的增长 ;抑制大叶合欢幼苗根瘤的形成
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| 关 键 词： | UV-B辐射 幼苗 净光合速率 生长 生物量 木本植物 南亚热带森林 |
| 修稿时间： | 1999-09-02 |
Effects of UV-B Radiation on Seedling Growth of Several Woody Species in the Southern Subtropical Forest |
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| CHEN Zhang-He,ZHU Su-Qin,LI Shao-Shan,GUO Zhi-Hua,ZHANG De-Ming.Effects of UV-B Radiation on Seedling Growth of Several Woody Species in the Southern Subtropical Forest[J].Acta Botanica Yunnanica,2000,22(4):475-483. |
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| Authors: | CHEN Zhang-He ZHU Su-Qin LI Shao-Shan GUO Zhi-Hua ZHANG De-Ming |
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| Abstract: | Effects of UV-B radiation (7 2 and 14 4 kJ d -1 m -2 ) on seedling growth of several woody species in the Southern subtropical forest in Guangdong Province were investigated. The species studied are: Psychotria rubra (Lour.) Poir., Schefflera octophylla (Lour.) Harms, Pithecellobium clypearia Benth., Pterospermum heterophyllum Hance, Sapium discolor Muell.-Arg. and Albizzia lebbeck (L.) Benth. The results demonstrated that the content of photosynthetic pigments of the UV-B treated seedlings was lower than that of the control seedlings. The effect was more significant on content of chlorophylls than that of carotenoids.UV-B radiation markedly lowered net photosynthetic rate, and reduced stomatal conductance and transpiration rate of the seedlings. It also reduced accumulation of dry matter of the seedlings and inhibited the formation of root nodules of Albizzia lebbeck seedlings. |
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| Keywords: | UV-B radiation Seedling Net photosynthetic rate Growth Biomass Woody plant Southern subtropical forest |
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