Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem
文献类型：期刊论文
| 作者 | Lu, X.; Gilliam, F. S.; Yu, G.; Li, L.; Mao, Q.; Chen, H.; Mo, J. |
| 刊名 | BIOGEOSCIENCES
 |
| 出版日期 | 2013 |
| 卷号 | 10期号:6页码:3931-3941 |
| ISSN号 | 1726-4170 |
| DOI | 10.5194/bg-10-3931-2013 |
| 文献子类 | Article |
| 英文摘要 | Dissolved organic carbon (DOC) plays a critical role in the carbon (C) cycle of forest soils, and has been recently connected with global increases in nitrogen (N) deposition. Most studies on effects of elevated N deposition on DOC have been carried out in N-limited temperate regions, with far fewer data available from N-rich ecosystems, especially in the context of chronically elevated N deposition. Furthermore, mechanisms for excess N-induced changes of DOC dynamics have been suggested to be different between the two kinds of ecosystems, because of the different ecosystem N status. The purpose of this study was to experimentally examine how long-term N addition affects DOC dynamics below the primary rooting zones (the upper 20 cm soils) in typically N-rich lowland tropical forests. We have a primary assumption that long-term continuous N addition minimally affects DOC concentrations and effluxes in N-rich tropical forests. Experimental N addition was administered at the following levels: 0, 50, 100 and 150 kg N ha(-1) yr(-1), respectively. Results showed that seven years of N addition significantly decreased DOC concentrations in soil solution, and chemo-physical controls (solution acidity change and soil sorption) rather than biological controls may mainly account for the decreases, in contrast to other forests. We further found that N addition greatly decreased annual DOC effluxes from the primary rooting zone and increased water-extractable DOC in soils. Our results suggest that long-term N deposition could increase soil C sequestration in the upper soils by decreasing DOC efflux from that layer in N-rich ecosystems, a novel mechanism for continued accumulation of soil C in old-growth forests. |
| 学科主题 | Ecology ; Geosciences, Multidisciplinary |
| 出版地 | GOTTINGEN |
| 电子版国际标准刊号 | 1726-4189 |
| WOS关键词 | DISSOLVED ORGANIC-CARBON ; OLD-GROWTH FORESTS ; INORGANIC NITROGEN ; TROPICAL FOREST ; N-DEPOSITION ; TERRESTRIAL ECOSYSTEMS ; LITTER DECOMPOSITION ; C MINERALIZATION ; SOIL SOLUTION ; MATTER |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000321122700032 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| 资助机构 | National Basic Research Program of China(National Basic Research Program of China) ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Knowledge Innovation Program of the Chinese Academy of Sciences(Chinese Academy of SciencesKnowledge Innovation Program of the Chinese Academy of Sciences) |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28017]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.[Lu, X. 2.[Li, L.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat Environm Change, Beijing 100093, Peoples R China 3.[Gilliam, F. S.] Marshall Univ, Dept Biol Sci, Huntington, WV 25755 USA 4.Mo, J.] Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China 5.Chen, H. 6.Mao, Q. 7.[Yu, G.] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, X.,Gilliam, F. S.,Yu, G.,et al. Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem[J]. BIOGEOSCIENCES,2013,10(6):3931-3941. |
| APA | Lu, X..,Gilliam, F. S..,Yu, G..,Li, L..,Mao, Q..,...&Mo, J..(2013).Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem.BIOGEOSCIENCES,10(6),3931-3941. |
| MLA | Lu, X.,et al."Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem".BIOGEOSCIENCES 10.6(2013):3931-3941. |
入库方式： OAI收割
来源：植物研究所
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。