Soil and root respiration under elevated CO2 concentrations during seedling growth of Pinus sylvestris var. sylvestri formis
文献类型：期刊论文
| 作者 | Liu, Y ; Han, SJ ; Zhou, YM ; Li, XF |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2007 |
| 卷号 | 17期号:5页码:660-665 |
| 关键词 | contribution of root respiration elevated CO2 concentration total soil respiration |
| ISSN号 | 1002-0160 |
| 通讯作者 | Han, SJ, S China Univ Technol, Coll Resources Sci & Papermaking, Guangzhou 510640, Peoples R China |
| 中文摘要 | The objectives of this study were to investigate the effect of higher CO2 concentrations (500 and 700 mu mol mol(-1)) in atmosphere on total soil respiration and the contribution of root respiration to total soil respiration during seedling growth of Pinus sylvestris var. sylvestriformis. During the four growing seasons (May-October) from 1999 to 2003, the seedlings were exposed to elevated concentrations Of CO2 in open-top chambers. The total soil respiration and contribution of root respiration were measured using an LI-6400-09 Soil CO2 flux chamber on June 15 and October 8, 2003. To separate root respiration from total soil respiration, three PVC cylinders were inserted approximately 30 cm deep into the soil in each chamber. There were marked diurnal changes in air and soil temperatures on June 15. Both the total soil respiration and the soil respiration without roots showed a strong diurnal pattern, increasing from before sunrise to about 14:00 in the afternoon and then decreasing before the next sunrise. No increase in the mean total soil respiration and mean soil respiration with roots severed was observed under the elevated CO2 treatments on June 15, 2003, as compared to the open field and control chamber with ambient CO2. However, on October 8, 2003, the total soil respiration and soil respiration with roots severed in the open field were lower than those in the control and elevated CO2 chambers. The mean contribution of root respiration measured on June 15, 2003, ranged from 8.3% to 30.5% and on October 8, 2003, from 20.6% to 48.6%. |
| 学科主题 | Soil Science |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249943600015 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54611]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu, Y,Han, SJ,Zhou, YM,et al. Soil and root respiration under elevated CO2 concentrations during seedling growth of Pinus sylvestris var. sylvestri formis[J]. PEDOSPHERE,2007,17(5):660-665. |
| APA | Liu, Y,Han, SJ,Zhou, YM,&Li, XF.(2007).Soil and root respiration under elevated CO2 concentrations during seedling growth of Pinus sylvestris var. sylvestri formis.PEDOSPHERE,17(5),660-665. |
| MLA | Liu, Y,et al."Soil and root respiration under elevated CO2 concentrations during seedling growth of Pinus sylvestris var. sylvestri formis".PEDOSPHERE 17.5(2007):660-665. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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