科研成果
| 论文编号: | doi: 10.1111/j.1744-7909.2007.00604.x |
| 第一作者所在部门: | 生态研究中心 |
| 论文题目: | Growth and Wood/Bark Properties of Abies faxoniana Seedlings as Affected by Elevated CO2 |
| 作者: | 乔运周 |
| 全部作者: | Yun-Zhou Qiao,Yuan-Bin Zhang,Kai-Yun Wang,Qian Wang,Qi-Zhuo Tian |
| 论文出处: | |
| 刊物名称: | Journal of Integrative Plant Biology |
| 年: | 2008 |
| 卷: | 50 |
| 期: | 3 |
| 页: | 265-270 |
| 联系作者: | 王开运 |
| 收录类别: | |
| 影响因子: | 0.859 |
| 摘要 : | Growth and wood and bark properties of Abies faxoniana seedlings after one year’s exposure to elevated CO2 concentration (ambient + 350 (± 25) μmol/mol) under two planting densities (28 or 84 plants/m2) were investigated in closed-top chambers. Tree height, stem diameter and cross-sectional area, and total biomass were enhanced under elevated CO2 concentration, and reduced under high planting density. Most traits of stem bark were improved under elevated CO2 concentration and reduced under high planting density. Stem wood production was significantly increased in volume under elevated CO2 concentration under both densities, and the stem wood density decreased under elevated CO2 concentration and increased under high planting density. These results suggest that the response of stem wood and bark to elevated CO2 concentration is density dependent. This may be of great importance in a future CO2 enriched world in natural forests where plant density varies considerably. The results also show that the bark/wood ratio in diameter, stem cross-sectional area and dry weight are not proportionally affected by elevated CO2 concentration under the two contrasting planting densities. This indicates that the response magnitude of stem bark and stem wood to elevated CO2 concentration are different but their response directions are the same. |
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