Warming effects on carbon release in a permafrost area of Qinghai-Tibet Plateau (SCI)
文献类型：期刊论文
| 作者 | Peng F.; Xue X.; You Q. G.; Zhou X. H.; Wang T. |
| 刊名 | Environmental Earth Sciences
 |
| 出版日期 | 2015 |
| 卷号 | 73期号:1页码:57-66 |
| 英文摘要 | The warming of permafrost soils and the resulting change in soil respiration (Rs) is one of the most uncertainties in research on global change. To better understand the effect of warming on permafrost soils and the feedback of Rs to climatic warming, a manipulative warming experiment was conducted with two warming levels (low-and high-level warming; increases of 1.88 degrees C (W1) and 3.19 degrees C (W2) in soil surface temperature, respectively) from year 2010 to 2011 using infrared heaters in inland area of the Qinghai-Tibet Plateau (QTP). Warming significantly decreased the soil moisture at depths of 0-10 and 10-20 cm, but increased it at depths of 40-60 and 60-100 cm, most likely because of the permafrost melting. Both warming treatments delayed the onset of freezing and advanced the onset of thawing in the active layer of permafrost with a stronger effect observed in W2. Annual soil C release increased by 77.1 and 125.8 g C year(-1) in the W1 and W2 treatments, respectively, which equated to an increase of 18 and 29 % compared with the control (C). The increase in Rs was higher in the thawing period than in the freezing period. The decrease in soil water content in the upper soil layer did not significantly inhibit Rs because warming extended the thawing period and increased the soil labile C. Our results indicate that permafrost soils will release more C to the atmosphere, even though surface soil moisture decreases in a warming climate in the dry alpine meadow in the QTP. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27580]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Peng F.,Xue X.,You Q. G.,et al. Warming effects on carbon release in a permafrost area of Qinghai-Tibet Plateau (SCI)[J]. Environmental Earth Sciences,2015,73(1):57-66. |
| APA | Peng F.,Xue X.,You Q. G.,Zhou X. H.,&Wang T..(2015).Warming effects on carbon release in a permafrost area of Qinghai-Tibet Plateau (SCI).Environmental Earth Sciences,73(1),57-66. |
| MLA | Peng F.,et al."Warming effects on carbon release in a permafrost area of Qinghai-Tibet Plateau (SCI)".Environmental Earth Sciences 73.1(2015):57-66. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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