Contribution of Aboveground Litter Decomposition to Soil Respiration in a Subtropical Coniferous Plantation in Southern China
文献类型：SCI/SSCI论文
| 作者 | Wang Y. D. ; Wang H. M. ; Ma Z. Q. ; Wen X. F. ; Li Q. K. ; Liu Y. F. ; Sun X. M. ; Yu G. R. |
| 发表日期 | 2009 |
| 关键词 | Soil CO(2) efflux carbon cycle litterfall decomposition Q(10) climate change mixed hardwood forest root respiration temperature sensitivity co2 efflux carbon allocation water-content beech forest ecosystems emissions flux |
| 英文摘要 | Soil CO(2) efflux (R(S)) was monitored in a 23-year-old subtropical coniferous plantation in southern China from January 2004 to December 2006. Field measurements of R(S) with litterfall (CK) and without litterfall (NL) were conducted to evaluate the contribution of aboveground litter decomposition to R(S). The results indicated that annual R(S) from CK ranged from 11.5 mg (C) m(-2) h(-1) in 2004 to 186.2 mg (C) m(-2) h(-1) in 2006. The R(S) of NL was significantly lower than the R(S) of CK. R(S) was mainly determined by soil temperature (T(S)), but it was also affected by soil moisture. Together, both factors explained > 70% of the observed variations in R(S). The temperature sensitivity (Q(10)) of R(S) from NL was lower than that from CK by considering the soil moisture effect. On average, the annual R(S) of the coniferous plantation was estimated to be 669 g (C) m(-2) yr(-1) over the study period. The litterfall greatly enhanced the R(S), and the respiration from aboveground litter accounted for about 33% of the total R(S), in which the fresh litterfall decomposition accounted for a large proportion. The carbon pool of aboveground litter in this young conifer forest is expected to increase continuously. |
| 出处 | Asia-Pacific Journal of Atmospheric Sciences |
| 卷 | 45 |
| 期 | 2 |
| 页 | 137-147 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1976-7633 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22834]  |
| 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 | Wang Y. D.,Wang H. M.,Ma Z. Q.,et al. Contribution of Aboveground Litter Decomposition to Soil Respiration in a Subtropical Coniferous Plantation in Southern China. 2009. |
入库方式： OAI收割
来源：地理科学与资源研究所
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