Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau
文献类型：SCI/SSCI论文
| 作者 | Zhao L. ; Li Y. N. ; Zhao X. Q. ; Xu S. X. ; Tang Y. H. ; Yu G. R. ; Gu S. ; Du M. Y. ; Wang Q. X. |
| 发表日期 | 2005 |
| 关键词 | Qinghai-Tibetan Plateau net ecosystem CO2 exchange eddy covariance method native tallgrass prairie carbon-dioxide alpine meadow water-vapor fluxes sink |
| 英文摘要 | Using the eddy covariance method, from 1 July 2003 to 30 June 2004, we conducted the observation and analysis of ecosystem CO2 flux in 3 types of alpine meadow vegetation (Kobresia humilis, Potentilla fruticosa shrub and Kobresia tibetica swamp meadows) on the Qinghai-Tibetan Plateau. The results show that the Kobresia humilis meadow, the shrub meadow and the swamp meadow's highest CO2 uptake rates are 16.78, 10.42 and 16.57 pmol-m(-2)-s(-1) respectively, while their highest CO2 release rates are 8.22, 7.73 and 18.67 mu mol-m(-2)-s(-1) respectively. The Kobresia humilis meadow and shrub meadow's annual atmospheric uptakes are 282 g CO2/m(2) and 53 g CO2/m(2), respectively, while swamp meadow's annual atmospheric release is 478 g CO2/m(2). This proves that the Kobresia humilis meadow and the shrub meadow on the Qinghai-Tibetan Plateau have relatively low potential for CO2 uptake and release compared to C4 grasslands, a number of lowland grasslands, and forests. Moreover, swamp meadow has relatively high release potential. This, in turn, reveals clear differences in carbon source/sink between different types of vegetation in the Qinghai-Tibetan Plateau alpine meadow ecosystem. These differences are mainly brought by differences in the vegetations' photosynthetic capacity and soil respiration. |
| 出处 | Chinese Science Bulletin |
| 卷 | 50 |
| 期 | 16 |
| 页 | 1767-1774 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1001-6538 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22292]  |
| 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 | Zhao L.,Li Y. N.,Zhao X. Q.,et al. Comparative study of the net exchange of CO2 in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau. 2005. |
入库方式： OAI收割
来源：地理科学与资源研究所
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