Short-term Effects of Nitrogen Additions and Increased Temperature on Wetland Soil Respiration, Sanjiang Plain, China
| 第一作者： |
陶宝先 |
| 英文第一作者： |
Tao, B. X. |
| 联系作者： |
宋长春 |
| 英文联系作者： |
Song, C. C. |
| 发表年度： |
2013 |
| 卷： |
33 |
| 摘要： |
Nitrogen deposition and global warming each have potential to alter soil carbon storage via changing decomposition, but combined effects of N addition and temperature on CO2 production in wetland soils are less studied. In this study, we conducted laboratory incubations to examine this problem using soil from a freshwater marsh in Sanjiang Plain, China. We found that N addition and temperature had a negative and positive effect on CO2 production, respectively. Despite low decomposition rates, heavy fractions had a notable contribution to CO2 production due to greater mass proportion in soil. Short-term combined effect of N addition and temperature on CO2 production was antagonistic. Based on greater N availability as N addition and temperature increasing, extra release of soil-derived N may further suppress CO2 production. We suggest that short-term soil CO2 production under simultaneous influence of temperature and N addition may be overestimated based on their single effects in this site. |
| 刊物名称： |
Wetlands |
| 参与作者： |
宋长春，郭跃东 |
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