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梁士楚,石贵玉,黄雅丽,韦宇静,李冰.巨尾桉与针叶树种光合生理特性的比较研究[J].广西科学院学报,2014,30(4):217-221. [点击复制]
- LIANG Shi-chu,SHI Gui-yu,HUANG Ya-li,WEI Yu-jing,LI Bing.Comparative Study on the Photosynthetic and Physiological Characteristics between Eucalyptus grandis×E.urophylla and Conifer Species[J].Journal of Guangxi Academy of Sciences,2014,30(4):217-221. [点击复制]
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| 巨尾桉与针叶树种光合生理特性的比较研究 |
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梁士楚1,2, 石贵玉1,2, 黄雅丽1,2, 韦宇静1,2, 李冰1,2
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| (1.珍稀濒危动植物生态与环境保护教育部重点实验室, 广西桂林 541004;2.广西师范大学生命科学学院, 广西桂林 541004) |
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| 摘要: |
| [目的]比较桂林市灵田乡人工巨尾桉(Eucalyptus grandis×E.urophylla)林和针叶混交林的光合生理特性,探究该地区是否适应巨尾桉的生长。[方法]采用Li-6400型便携式光合仪测定巨尾桉与马尾松、杉木在春季叶片净光合速率(Pn)及其光合生理因子的日变化,并通过相关性分析了解净光合速率与其它光合生理因子的关系。[结果]这3种树种净光合速率在春季均呈现"双峰型"的特点,光合有效辐射(PAR)、气孔导度(Gs)、蒸腾速率(Tr)和胞间CO2浓度是影响这3种树种叶片净光合速率日变化的重要因子。[结论]巨尾桉具有较高的水分利用效率(WUE)、光能利用效率(LUE)和CO2利用效率(CUE),还具有适应桂林土山生境且生长快速的特性。 |
| 关键词: 巨尾桉 马尾松 杉木 光合作用 日变化 相关性分析 |
| DOI： |
| 投稿时间：2014-04-10 |
| 基金项目:广西科技重大专项(2010GXNSFD169007,桂科基1123014,桂科基11166-01,桂科基11199001)资助。 |
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| Comparative Study on the Photosynthetic and Physiological Characteristics between Eucalyptus grandis×E.urophylla and Conifer Species |
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LIANG Shi-chu1,2, SHI Gui-yu1,2, HUANG Ya-li1,2, WEI Yu-jing1,2, LI Bing1,2
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| (1.Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Guangxi Normal University), Ministry of Education, Guilin, Guangxi, 541004, China;2.Colleage of Life Science, Guangxi Normal University, Guilin, Guangxi, 541004, China) |
| Abstract: |
| [Objective] To explore whether Guilin region is suitable for the growth of Eucalyptus grandis×E.urophylla,we made comparison of photosynthetic physiological characteristics among Eucalyptus grandis×E.urophylla plantations and leguminous mixed forest in Lingtian country.[Methods] The Li-6400 portable photosynthesis systemwas used to measure the net photosynthetic rate (Pn) and the daily variation of photosynthetic physiological factors among Eucalyptus grandis×E.urophylla,Pinus massoniana,and Cunninghamia lanceolata in spring. Correlation analysis was used to understand the relationship of Pn and other photosynthetic physiological factors.[Results] Pn of all tree species showed double-peak characteristic in spring. Photosynthetically active radiation (PAR),stomatal conductance (Gs),transpiration rate (Tr),and intercellular CO2 density are main factors affecting Pn daily variation.[Conclusion] Eucalyptus grandis×E.urophylla has high water use efficiency (WUE),light use efficiency (LUE) and CO2 use efficiency and adapt to mountain habitat with fast growing in Guilin. |
| Key words: Eucalyptus grandis×E.urophylla Pinus massoniana Cunninghamia lanceolata photosynthesis daily variation correlation analysis |
