高CO2浓度对温带三种针叶树光合光响应特性的影响

应用生态学报 ›› 2002, Vol. ›› Issue (6): 646-650.

高CO₂浓度对温带三种针叶树光合光响应特性的影响

王淼¹, 郝占庆¹, 姬兰柱¹, 周广胜²

1. 中国科学院沈阳应用生态研究所, 沈阳 110016;
2. 中国科学院植物研究所植被数量生态学开放实验室, 北京 100093

收稿日期:2000-03-28 修回日期:2000-09-11
通讯作者: 王淼,1964年生,副研究员,主要从事树木生理生态学研究,发表论文25篇.E-mail:wangmiao@iae.ac.cn
基金资助:
中国科学院知识创新工程项目(KZCX24063);国家自然科学基金重点项目(39730119);国家重点基础研究发展规划项目(G1999043407)资助

Effect of elevated atmospheric CO₂ concentrations on photosynthesis light response characteristics of three coniferous tree species seedlings

WANG Miao¹, HAO Zhanqing¹, JI Lanzhu¹, ZHOU Guangsheng ²

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016;
2. Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093

Received:2000-03-28 Revised:2000-09-11

摘要/Abstract

摘要： 将长白山地区阔叶红松林中主要针叶树种红松、红皮云杉和长白落叶松的幼苗,盆栽于模拟自然光照和人工调节CO₂浓度为700和400μmol·mol^-1的气室内两个生长季,在各自的生长环境条件下,利用CI301PS便携式CO₂分析系统测定针叶的光合光响应曲线.结果表明,不同树种及同一树种的不同CO₂浓度处理间差异明显.比较饱和净光合速率、暗呼吸、光补偿点、光饱和点、及光能利用率(QUE)的变化可见,长白落叶松为阳性树种,其光合作用对高CO₂浓度的适应能力较好,红松树种次之,阴性树种红皮云杉光合作用对高CO₂浓度适应能力最差.并初步探讨了供试树种光合生理特性及其演替状况间的联系.

关键词: 光合作用, 高CO₂浓度, 光合特性, 复合胁迫, 玉米, 生理特性, 种子萌发

Abstract: Potted seedlings of Pinus koraiensis,Picea koraiensis, and Larix olgensis, the dominant coniferous tree species in Changbai Mountain, were grown under elevated CO₂ concentration (700 μmol·mol^-1) and ambient CO₂ concentration (400 μmol·mol^-1) for two year, and their photosynthesis light response curves were determined with CI-301PS CO₂ gas analysis system under a series of light intensity from 0 to 2500 μmol·quanta·m^-2·s^-1. The comparison of dark respiration rate (DRR), maximum net photosynthetic rate (A_max), quantum use efficiency (QUE), light compensation point (LCP), light saturation point (LSP) and photo inhibition point (PP) for the seedlings of these coniferous tree species under different CO₂ concentration showed that Larix olgensis, which had better adaptation of photosynthesis to elevated CO₂ concentration, was heliophilous species. The shade-tole- rant species Picea koraiensis showed the least adaptation of photosynthesis to elevated CO₂ concentration. Furthermore, the relationship between photosynthetic physiological character of tree species and their succession status was also discussed in this paper.

Key words: Photosynthesis, Elevated CO₂ concentration, Photosynthetic characteristics, maize, physiological characteristics., combined stress, seed germination

中图分类号:

Q945.1

王淼, 郝占庆, 姬兰柱, 周广胜. 高CO₂浓度对温带三种针叶树光合光响应特性的影响[J]. 应用生态学报, 2002, (6): 646-650.

WANG Miao, HAO Zhanqing, JI Lanzhu, ZHOU Guangsheng . Effect of elevated atmospheric CO₂ concentrations on photosynthesis light response characteristics of three coniferous tree species seedlings[J]. Chinese Journal of Applied Ecology, 2002, (6): 646-650.

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高CO₂浓度对温带三种针叶树光合光响应特性的影响

Effect of elevated atmospheric CO₂ concentrations on photosynthesis light response characteristics of three coniferous tree species seedlings

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