Responses of SOM decomposition to changing temperature in Zoige alpine wetland, China
文献类型：SCI/SSCI论文
| 作者 | Xue J. Y.; Zhang, H. X.; He, N. P.; Gan, Y. M.; Wen, X. F.; Li, J.; Zhang, X. L.; Fu, P. B. |
| 发表日期 | 2015 |
| 关键词 | Activation energy Alpine wetland Carbon quality-temperature hypothesis Soil organic carbon Temperature sensitivity Soil moisture soil organic-carbon matter decomposition climate-change substrate availability microbial respiration thermal adaptation northeastern china southwest china sensitivity quality |
| 英文摘要 | Alpine wetlands are considered to be very sensitive to future climate warming. Understanding changes in decomposition rates (Rs) of soil organic matter (SOM) and temperature sensitivity (Q (10)) in alpine wetlands, under the scenarios of a warming climate and decreasing soil moisture, is important for predicting their carbon (C) budget. Here, we established three sampling transects from wetland edge to meadow in the Zoige alpine wetlands in China, which represented the gradients of decreasing soil moisture. We conducted an incubation experiment (5-25 A degrees C) to explore changes in Q (10) with the degradation process from alpine wetland to alpine meadow. The results showed that temperature significantly influenced Rs in all locations. Rs first increased from site I to site IV and then decreased from site IV to site V. However, Q (10) and activation energy (E (a) ) showed no apparent trends with soil coming from sites along a moisture gradient. Overall, the Q (10) values in the wetland (sites 1.50) were significantly lower than that of the meadow (1.83); similar trends were observed for E (a) . In addition, E (a) exhibited a negative logarithmic relationship with C quality indices in all locations, which suggested that the C quality-temperature hypothesis is applicable to both alpine wetlands and meadows. These findings provide a theoretical foundation for predicting the potential influences of warming climate on soil C turnover and storage in alpine wetlands. |
| 出处 | Wetlands Ecology and Management |
| 卷 | 23 |
| 期 | 5 |
| 页 | 977-987 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0923-4861 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38969]  |
| 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 | Xue J. Y.,Zhang, H. X.,He, N. P.,et al. Responses of SOM decomposition to changing temperature in Zoige alpine wetland, China. 2015. |
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。