Carbon Balance in an Alpine Steppe in the Qinghai-Tibet Plateau
文献类型：SCI/SSCI论文
| 作者 | Pei Z. Y. ; Ouyang H. ; Zhou C. P. ; Xu X. L. |
| 发表日期 | 2009 |
| 关键词 | alpine grassland carbon balance carbon flux net primary productivity Qinghai-Tibet Plateau past 2 centuries soil respiration atmospheric co2 root respiration growing-season dioxide flux grassland n2o ch4 ecosystem |
| 英文摘要 | Carbon fluxes were measured using a static chamber technique in an alpine steppe in the Qinghai-Tibet Plateau from July 2000 to July 2001. It was shown that carbon emissions decreased in autumn and increased in spring of the next year, with higher values in growth seasons than in winters. An exponential correlation (E(carbon) = 0.22(exp(0.09T) + ln(0.31P + 1)), R(2) = 0.77, P < 0.001) was shown between carbon emissions and environmental factors such as temperature (T) and precipitation (P). Using the daily temperature (T) and total precipitation (R), annual carbon emission from soil to the atmosphere was estimated to be 79.6 g C/m(2), 46% of which was emitted by microbial respiration. Considering an average net primary production of 92.5 g C/m(2) per year within the 2 year experiment, alpine steppes can take up 55.9 g CO(2)-C/m(2) per year. This indicates that alpine steppes are a distinct carbon sink, although this carbon reservoir was quite small. |
| 出处 | Journal of Integrative Plant Biology |
| 卷 | 51 |
| 期 | 5 |
| 页 | 521-526 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1672-9072 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23215]  |
| 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 | Pei Z. Y.,Ouyang H.,Zhou C. P.,et al. Carbon Balance in an Alpine Steppe in the Qinghai-Tibet Plateau. 2009. |
入库方式： OAI收割
来源：地理科学与资源研究所
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