Response of soil carbon to nitrogen and water addition differs between labile and recalcitrant fractions: Evidence from multi-year data and different soil depths in a semi-arid steppe
文献类型：期刊论文
| 作者 | Wang, Ruzhen1; Dijkstra, Feike A.2; Liu, Heyong1; Yin, Jinfei1; Wang, Xue1; Feng, Xue1; Xu, Zhuwen1; Jiang, Yong1 |
| 刊名 | CATENA
 |
| 出版日期 | 2019 |
| 卷号 | 172页码:857-865 |
| 关键词 | Nitrogen fertilization Precipitation Carbon storage Permanganate-oxidizable carbon Mineral-associated carbon Natural abundance stable isotope |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2018.08.034 |
| 英文摘要 | We examined the effect of nitrogen and water addition on soil carbon pool dynamics in a semi-arid grassland field experiment. Soils were sampled over a four-year period at different soil depths and analyzed for total soil organic carbon (SOC), oxidizable C (OxC), lignin and total nitrogen (TN) in bulk soil and the silt and clay fraction (< 53 mu m). We found that water but not N addition increased SOC (by 18.1%), OxC (by 12.2%), and TN (by 15.1%) in bulk soil. In contrast, SOC, OxC, and TN in the silt and clay fraction showed no change in response to both N and water addition. Both N and water addition showed no effect on total lignin concentration in soils. A more enriched C-13 and lower C:N ratio in the silt and clay fraction indicated enhanced microbially processed C of relatively greater stability in this fraction compared to the bulk soil. Water addition promoted soil C sequestration by enhancing C input from plant materials as evidenced from more depleted soil delta C-13 compared to the ambient precipitation. We suggest that the increase in OxC was likely one of the main drivers of the larger SOC concentration with higher water inputs. Soil C fractions in subsoils were also affected by exogenous resource inputs in a similar way as surface soils. Future modeling work on soil C sequestration should consider the relative contribution of OxC and mineral-associated C to SOC changes. |
| 资助项目 | National Key Research and Development Program of China[2016YFC0500707] ; National Natural Science Foundation of China[31770525] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000449136800076 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.72.129.5/handle/321005/123708]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Jiang, Yong |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sydney, Sch Life & Environm Sci, Ctr Carbon Water & Food, Sydney, NSW 2006, Australia |
| 推荐引用方式 GB/T 7714 | Wang, Ruzhen,Dijkstra, Feike A.,Liu, Heyong,et al. Response of soil carbon to nitrogen and water addition differs between labile and recalcitrant fractions: Evidence from multi-year data and different soil depths in a semi-arid steppe[J]. CATENA,2019,172:857-865. |
| APA | Wang, Ruzhen.,Dijkstra, Feike A..,Liu, Heyong.,Yin, Jinfei.,Wang, Xue.,...&Jiang, Yong.(2019).Response of soil carbon to nitrogen and water addition differs between labile and recalcitrant fractions: Evidence from multi-year data and different soil depths in a semi-arid steppe.CATENA,172,857-865. |
| MLA | Wang, Ruzhen,et al."Response of soil carbon to nitrogen and water addition differs between labile and recalcitrant fractions: Evidence from multi-year data and different soil depths in a semi-arid steppe".CATENA 172(2019):857-865. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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