| 白桦光合特性的研究 |
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| 引用本文： | 周玉梅,杨传平,王淑娟,吴月亮,王文章,韩士杰.白桦光合特性的研究[J].林业研究,2002,13(3):209-212. |
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| 作者姓名： | 周玉梅 杨传平 王淑娟 吴月亮 王文章 韩士杰 |
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| 作者单位： | 中科院沈阳应用生态所 沈阳110016
(周玉梅)，东北林业大学 哈尔滨150040
(杨传平，王文章)，吉林大学生命科学院 长春130000
(王淑娟)，辽宁省林业科学研究院 沈阳110032
(吴月亮)，中科院沈阳应用生态所 沈阳110016(韩士杰) |
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| 基金项目： | This paper was supported by the National Natural Science Foundation of China (No. 39970627) and the Key Project of State Department of Science Technology (2002BA515B05). |
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| 摘 要： | 测定了3年生白桦的光合与呼吸作用对温度,湿度以及CO2浓度的响应;还测定了光补偿点,光饱和点和CO2补偿点。结果表明:在目前的空气CO2浓度下,光合和呼吸作用的最适温度分别是24℃和30℃;当相对湿度是80%时,白桦能维持较强的光合作用;呼吸作用与相对湿度无明显的相关性;光补偿点和光饱和点分别是25 molm-2s-1和1375 祄olm-2s-1;CO2补偿点是180 礚 L-1;白桦在CO2浓度为2400 礚 L-1时仍有吸收潜力。图4参19。
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| 关 键 词： | 白桦 光合作用 呼吸作用 |
| 收稿时间： | 1 September 2001 |
A study on photosynthetic characteristics ofBetula platyphylla |
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| Zhou Yu-mei,Yang Chaung-Ping,Wang Shu-juan,Wu Yue-liang,Wang Wen-zhang,Han Shi-jie.A study on photosynthetic characteristics ofBetula platyphylla[J].Journal of Forestry Research,2002,13(3):209-212. |
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| Authors: | Zhou Yu-mei Yang Chaung-Ping Wang Shu-juan Wu Yue-liang Wang Wen-zhang Han Shi-jie |
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| Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciencses, 110016 Shenyang, P.R. China;(2) Northeast Forestry University, 150040 Harbin, P.R. China;(3) Collelge of Life Science, Jilin University, 13000 Changchun, P.R. Chian;(4) Liaoling Academy of Forestry Science, 110032 Shenyang, P.R. China |
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| Abstract: | Influences of temperature, humidity, and CO2 concentration on the photosynthesis and respiration of three-year-oldBetula platyphylla was investigated. Light compensation point, saturation point and CO2 compensation point were also determined. The results showed that the optimal temperature of photosynthesis and dark respiration
was 24 °C and 30 °C, respectively, at ambient CO2. When relative humidity was 80%,Betula platyphylla could maintain strong photosynthesis. There was no significant correlation between respiration and relative humidity. The
light compensation and saturation point was 25 μmol·m−2·s−1 and 1 375 μmol·m−2·s−1, respectively. The CO2 compensation point was 180 μL·L−1. The results showed thatBetula platyphylla still had potential to assimilate CO2 when CO2 concentration was above 2 400 μL·L−1.
Foundation item: This paper was supported by the National Natural Science Foundation of China (No. 39970627) and the Key Project of State
Department of Science Technology (2002BA515B05).
Biography: ZHOU Yu-mei (1973-), Ph. Doctor, Assistant Research fellow Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang
110016, P. R. China
Responsible editor: Song Funan |
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| Keywords: | Betula platyphylla Photosynthesis Respiration CO2 concentration |
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