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郭昉晨,刘世荣,温远光,唐敬超,蔡道雄,明安刚,史作民,雷丽群.南亚热带11种珍贵阔叶树种光合特性研究[J].广西科学,2015,22(6):606-611. [点击复制]
- GUO Fang-chen,LIU Shi-rong,WEN Yuan-guang,TANG Jing-chao,CAI Dao-xiong,Ming An-gang,SHI Zuo-min,LEI Li-qun.Photosynthetic Characteristics of Eleven Precious Broad-leaved Tree Species in South Subtropics[J].Guangxi Sciences,2015,22(6):606-611. [点击复制]
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| 南亚热带11种珍贵阔叶树种光合特性研究 |
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郭昉晨1, 刘世荣2, 温远光1,3, 唐敬超2, 蔡道雄3, 明安刚3, 史作民2, 雷丽群3
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| (1.广西大学林学院, 亚热带农业生物资源保护与利用国家重点实验室, 广西南宁 530004;2.中国林业科学研究院森林生态与保护研究所, 北京 100091;3.中国林业科学研究院热带林业实验中心, 友谊关森林生态系统定位研究站, 广西凭祥 532600) |
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| 摘要: |
| [目的]了解我国南亚热带珍贵阔叶树种的光合特性,为造林树种的选择和结构优化提供参考。[方法]使用Li-6400便携式光合测定系统测定各树种的光响应曲线和二氧化碳响应曲线,采用模型拟合的方法,计算出各树种的光合特征参数并比较分析。[结果]不同珍贵阔叶树种的光合生理特性存在明显差异,各树种最大净光合速率为7.00~18.19 μmol·m-2·s-1,平均值为10.83 μmol·m-2·s-1。最大净光合速率由高到低排序依次为柚木Tectona grandis(18.19 μmol·m-2·s-1)、米老排Mytilaria laosensis(13.07 μmol·m-2·s-1)、红锥Castanopsis hystrix(12.60 μmol·m-2·s-1)、降香黄檀Dalbergia odorifera(11.63 μmol·m-2·s-1)、香梓楠Michelia hedyosperma(11.29 μmol·m-2·s-1)、灰木莲Manglietia glauce(10.85 μmol·m-2·s-1)、观光木Tsoongiodendron odorum(10.64 μmol·m-2·s-1)、格木Erythrophleum fordii(8.90 μmol·m-2·s-1)、擎天树Parashorea chinensis(7.72 μmol·m-2·s-1)、山白兰Paramichelia baillonii(7.22 μmol·m-2·s-1)、铁力木Mesua ferrea(7.00 μmol·m-2·s-1)。光合能力较强的树种为柚木、米老排和红锥,较弱的为擎天树、铁力木和山白兰;对高光强适应能力较强的树种为铁力木、柚木、观光木和降香黄檀,较弱的为灰木莲和山白兰;对弱光利用能力较强的树种为格木、红锥和香梓楠,较弱的为山白兰、擎天树、观光木和米老排。[结论]在全球气候变化的背景下,可选择光合能力强的树种造林。格木、红锥和香梓楠对弱光利用能力较强,可作为松、杉人工针叶纯林近自然化改造树种。 |
| 关键词: 珍贵阔叶树种 光合特性 南亚热带 |
| DOI： |
| 投稿时间：2015-10-09 |
| 基金项目:国家"十二五"科技支撑计划项目(2012BAD22B01)和国家林业行业公益专项重大项目(201404201)资助。 |
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| Photosynthetic Characteristics of Eleven Precious Broad-leaved Tree Species in South Subtropics |
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GUO Fang-chen1, LIU Shi-rong2, WEN Yuan-guang1,3, TANG Jing-chao2, CAI Dao-xiong3, Ming An-gang3, SHI Zuo-min2, LEI Li-qun3
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| (1.State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Forestry College of Guangxi University, Nanning, Guangxi, 530004, China;2.Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, 100091, China;3.Guangxi Youyiguan Forest Ecosystem Research Station, Experiment Center of Tropical Forestry, Chinese Academy of Forestry, Pingxiang, Guangxi, 532600, China) |
| Abstract: |
| [Objective] In order to acquire the photosynthetic characteristics of precious tree species in south subtropical zone, the eleven tree species that were commonly planted were selected for physiological study.[Methods] Light response curves and CO2 response curves of these tree species were measured by Li-6400 portable photosynthesis system.The curvilinear model was used for calculating the parameters of photosynthetic characteristics of these tree species, and then their comparisons of the physiological parameters were analyzed among the eleven tree species.[Results] The photosynthetic characteristic parameters have obvious differences among the eleven precious tree species.The maximum net photosynthetic rate of the tree species ranges from 7.00 μmol·m-2·s-1 to 18.19 μmol·m-2·s-1, and the average value is 10.83 μmol·m-2·s-1.The maximum net photosynthetic rate is highest for Tectona grandis(18.19 μmol·m-2·s-1), followed by Mytilaria laosensis(13.07 μmol·m-2·s-1), Castanopsis hystrix(12.60 μmol·m-2·s-1), Dalbergia odorifera(11.63 μmol·m-2·s-1), Michelia hedyosperma(11.29 μmol·m-2·s-1), Manglietia glauce(10.85 μmol·m-2·s-1), Tsoongiodendron odorum(10.64 μmol·m-2·s-1), Erythrophleum fordii(8.90 μmol·m-2·s-1), Parashorea chinensis(7.72 μmol·m-2·s-1), Paramichelia baillonii(7.22 μmol·m-2·s-1), and Mesua ferrea(7.00 μmol·m-2·s-1).Tectona grandis, Mytilaria laosensis and Castanopsis hystrix have relatively higher photosynthetic capacity, while Parashorea chinensis, Mesua ferrea and Paramichelia baillonii have lower photosynthetic ability.Mesua ferrea, Tectona grandis and Dalbergia odorifera have relatively higher adptability in high photosynthetic active radiation, whilie Manglietia glauce and Paramichelia baillonii have lower adaptability.Erythrophleum fordii, Castanopsis hystrix and Michelia hedyosperma have relativerly higher utilization capacity in low photosynthetic active radiation, while Paramichelia baillonii, Parashorea chinensis, Tsoongiodendron odorum and Mytilaria laosensis have lower capacity.[Conclusion] Tree species with higher photosynthetic capacity can be selected for afforestation under the changes of global climates. The tree species with higher utilization capacity in low photosynthetic active radiation like Erythrophleum fordii, Castanopsis hystrix and Michelia hedyosperma perform better in close-to-nature management for P.massoniana and C.lanceolata monoculture plantations. |
| Key words: precious broad leaved tree species photosynthetic characteristics south subtropics |
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