Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau
文献类型：SCI/SSCI论文
| 作者 | Xu S. X. ; Zhao X. Q. ; Li Y. N. ; Zhao L. ; Yu G. R. ; Sun X. M. ; Cao G. M. |
| 发表日期 | 2005 |
| 关键词 | alpine shrub carbon dioxide flux diurnal variation monthly variation temperate grassland prairie soil northern storage plains co2 |
| 英文摘要 | Continuous CO2 flux observation with eddy covariance method conducted in the alpine shrub on the Qinghai-Tibet Plateau indicates that there are distinct diurnal and monthly variations for CO2 fluxes in the alpine shrub on the plateau. As for diurnal variation, with net CO2 influx from 08:00 to 19:00 and net CO2 efflux from 20:00 to 07:00, peak CO2 flux during warm season (July) appears around 12:00 (-1.19 g CO2 (.) m(-2) (.) h(-1)); there is no obvious horary fluctuation for CO2 flux during cold season (January), and horary CO2 flux during most hours in a day is close to zero except for a small amount of net efflux (about 0.11 g CO2 (.) m(-2) (.) h(-1)) from 11:00-17:00. As for monthly variation, with net CO2 influx from June to September and net CO2 efflux from January to May and October to December, the peak monthly CO2 influx and CO2 efflux appear in August and April, respectively. The total net CO2 influx from June to September and total net CO2 efflux from February to May and October to December in the alpine shrub on the Qinghai-Tibet Plateau are estimated to be 673 and 446 g CO2 (.) m(-2). Results show that the alpine shrub on the Qinghai-Tibet Plateau is remarkable carbon dioxide sink under no grazing conditions and the total yearly CO2 influx is estimated to be 227 9 CO2 (.) m(-2). |
| 出处 | Chinese Science Bulletin |
| 卷 | 50 |
| 期 | 6 |
| 页 | 539-543 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1001-6538 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22662]  |
| 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 | Xu S. X.,Zhao X. Q.,Li Y. N.,et al. Diurnal and monthly variations of carbon dioxide flux in an alpine shrub on the Qinghai-Tibet Plateau. 2005. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。