Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains
文献类型：SCI/SSCI论文
| 作者 | Guan D. X. ; Wu J. B. ; Yu G. R. ; Sun X. M. ; Zhao X. S. ; Han S. J. ; Jin C. J. |
| 发表日期 | 2005 |
| 关键词 | CO2 flux soil temperature PAR broad-leaved Korean pine mixed forest temperate deciduous forest carbon-dioxide water-vapor long-term exchange-rates variability respiration |
| 英文摘要 | The impacts of temperature, photosynthetic active radiation (PAR) and vapor pressure deficit (VPD) on CO2 flux above broad-leaved Korean pine mixed forest in the Changbai Mountains were studied based on eddy covariance and meteorological factors measurements. The results showed that, daytime CO2 flux was mainly controlled by PAR and they fit Michaelis-Menten equation. Meanwhile VPD also had an influence on the daytime flux. Drier air reduced the CO2 assimilation of the ecosystem, the drier the air, the more the reduction of the assimilation. And the forest was more sensitive to VPD in June than that in July and August. The respiration of the ecosystem was mainly controlled by soil temperature and they fit exponential equation. It was found that this relationship was also correlated with seasons; respiration from April to July was higher than that from August to November under the same temperature. Daily net carbon exchange of the ecosystem and the daily mean air temperature fit exponential equation. It was also found that seasonal trend of net carbon exchange was the result of comprehensive impacts of temperature and PAR and so on. These resulted in the biggest CO2 uptake in June and those in July and August were next. Annual carbon uptake of the forest ecosystem in 2003 was -184 gC . m(-2). |
| 出处 | Science in China Series D-Earth Sciences |
| 卷 | 48 |
| 页 | 116-122 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1006-9313 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23922]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Guan D. X.,Wu J. B.,Yu G. R.,et al. Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains. 2005. |
入库方式： OAI收割
来源：地理科学与资源研究所
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