| CO2浓度升高条件下长白赤松幼苗种植密度对净光合速率的影响 |
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| 引用本文： | 王琛瑞,黄国宏,周玉梅,韩士杰,张军辉,邹春静.CO2浓度升高条件下长白赤松幼苗种植密度对净光合速率的影响[J].生态学杂志,2002,0(9):1195-1197. |
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| 作者姓名： | 王琛瑞 黄国宏 周玉梅 韩士杰 张军辉 邹春静 |
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| 作者单位： | 中国科学院沈阳应用生态研究所陆地生态过程重点实验室, 沈阳 110016 |
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| 基金项目： | 中国科学院资源环境领域知识创新工程项目(KZCX2-408);国家自然科学基金资助项目(30070158). |
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| 摘 要： |
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| 收稿时间： | 2001-02-12 |
Effect of Pinus sylvestriformis seedlings density on net photosynthetic rate under elevated CO2 |
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| WANG Chenrui,HUANG Guohong,ZHOU Yumei,HAN Shijie,ZHANG Junhui,ZOU Chunjing.Effect of Pinus sylvestriformis seedlings density on net photosynthetic rate under elevated CO2[J].Chinese Journal of Ecology,2002,0(9):1195-1197. |
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| Authors: | WANG Chenrui HUANG Guohong ZHOU Yumei HAN Shijie ZHANG Junhui ZOU Chunjing |
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| Institution: | Key Laboratory of Terrestrial Ecological Process, Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016 |
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| Abstract: | The effect of Pinus sylvestriformis seedlings density on net photosynthetic rate was studied under elevated CO2. Atmospheric CO2 concentration was controlled in OTC (Open Top Chamber). The results showed that elevated CO2 not only made net photosynthetic rates (NPRs) of two Pinus sylvestriformis seedlings densities increased,but also mitigated their intra-specific competition. Meanwhile,the difference of seedling NPRs between100 and 400 plant·m-2 under 500 μmol·mol-1 air CO2 concentration was less than that under 350 μmol·mol-1 with the same PARlevels. When air CO2 concentration reached 700 μmol·mol-1, the NPRs of seedlings under both planting densities were close to each other with the same PARlevels. The intra-specific competition was minimized under air CO2 concentration of 700 μmol·mol-1. |
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