Carbon and nitrogen additions induce distinct priming effects along an organic-matter decay continuum
文献类型：期刊论文
| 作者 | Na Qiao ; Xingliang Xu ; Yuehua Hu ; et al. |
| 刊名 | Scientific Reports
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:x页码:19865 |
| 中文摘要 | Decomposition of organic matter (OM) in soil, affecting carbon (C) cycling and climate feedbacks, depends on microbial activities driven by C and nitrogen (N) availability. However, it remains unknown how decomposition of various OMs vary across global supplies and ratios of C and N inputs. We examined OM decomposition by incubating four types of OM (leaf litter, wood, organic matter from organic and mineral horizons) from a decay continuum in a subtropical forest at Ailao Mountain, China with labile C and N additions. Decomposition of wood with high C:N decreased for 3.9 to 29% with these additions, while leaf decomposition was accelerated only within a narrow C:N range of added C and N. Decomposition of OM from organic horizon was accelerated by high C:N and suppressed by low C:N, but mineral soil was almost entirely controlled by high C:N. These divergent responses to C and N inputs show that mechanisms for priming (i.e. acceleration or retardation of OM decomposition by labile inputs) vary along this decay continuum. We conclude that besides C:N ratios of OM, those of labile inputs control the OM decay in the litter horizons, while energy (labile C) regulates decomposition in mineral soil. This suggests that OM decomposition can be predicted from its intrinsic C:N ratios and those of labile inputs. |
| 公开日期 | 2016-12-12 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10164]  |
| 专题 | 西双版纳热带植物园_动植物关系组 |
| 推荐引用方式 GB/T 7714 | Na Qiao,Xingliang Xu,Yuehua Hu,et al. Carbon and nitrogen additions induce distinct priming effects along an organic-matter decay continuum[J]. Scientific Reports,2016,6(x):19865. |
| APA | Na Qiao,Xingliang Xu,Yuehua Hu,&et al..(2016).Carbon and nitrogen additions induce distinct priming effects along an organic-matter decay continuum.Scientific Reports,6(x),19865. |
| MLA | Na Qiao,et al."Carbon and nitrogen additions induce distinct priming effects along an organic-matter decay continuum".Scientific Reports 6.x(2016):19865. |
入库方式： OAI收割
来源：西双版纳热带植物园
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