Effect of continued nitrogen enrichment on greenhouse gas emissions from a wetland ecosystem in the Sanjiang Plain, Northeast China: A 5 year nitrogen addition experiment
文献类型：期刊论文
| 作者 | Song, Changchun; Wang, Lili; Tian, Hanqin5; Liu, Deyan6; Lu, Chaoqun5; Xu, Xiaofeng1,7; Zhang, Lihua3; Yang, Guisheng; Wan, Zhongmei2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2013 |
| 卷号 | 118期号:2页码:741-751 |
| 关键词 | nitrogen addition ecosystem respiration CH4 flux N2O flux marshland |
| ISSN号 | 2169-8953 |
| DOI | 10.1002/jgrg.20063 |
| 文献子类 | Article |
| 英文摘要 | Mounting evidence supports that wetland ecosystems, one of the largest carbon pools on the earth, are exposed to ample nitrogen (N) additions due to atmospheric deposition or N loading from upstream agricultural fertilizer application. However, our understanding of how N enrichment affects the fluxes of greenhouse gases (GHGs) in wetlands is weak. A 5year N addition experiment was conducted to examine the responses of CH4 and N2O fluxes as well as ecosystem respiration from wetlands in the Sanjiang Plain, Northeast China, through 2005 to 2009. Four levels of N addition (control, 0kgN ha(-1)yr(-1); low-level, 60kgN ha(-1)yr(-1); medium-level, 120kgN ha(-1)yr(-1); high-level, 240kgN ha(-1)yr(-1)) were designed in this study. Overall, our results show that medium and high levels of N addition increased ecosystem respiration by 28% and 69% (P<0.05), respectively, while low-level N addition has no effect on ecosystem respiration (P>0.05). High-level N fertilization exerted stronger effects on ecosystem respiration in the initial year than the following years. It indicated that the effects of high-level N fertilization on CO2 might be overestimated by short-term observations. High-level N fertilization increased N2O emissions by 396% over the 5years (P<0.05), but the low- and medium-level-N addition did not exert any apparent effect on N2O emissions (P>0.05). N2O emission under high-level N addition in the first and fifth years showed stronger pronounced responses to N addition compared with that from the third and fourth years, indicating the importance of long-term field observation. Over the 5years, however, the low and medium-level N addition showed no effect on N2O emissions. The four levels of N addition exerted no effect on CH4 emissions (P>0.05). Furthermore, the relationship between GHGs and soil temperature or water table depth varied among different plots and experimental time. Our findings highlighted the importance of gas species, experimental time, and the amount of fertilizer N with regard to the responses of GHG emissions to N fertilization. |
| 学科主题 | Environmental Sciences ; Geosciences, Multidisciplinary |
| 出版地 | WASHINGTON |
| 电子版国际标准刊号 | 2169-8961 |
| WOS关键词 | FRESH-WATER MARSH ; METHANE OXIDATION ; ATMOSPHERIC NITROGEN ; SOIL RESPIRATION ; CARBON EXCHANGE ; CLIMATE-CHANGE ; CH4 EMISSIONS ; N DEPOSITION ; CO2 ; PLANT |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000324913100027 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Chinese Academy of Sciences(Chinese Academy of Sciences) ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; National Key Basic Research Support Foundation of China(National Basic Research Program of China) |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/27921]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN USA 2.Chinese Acad Sci, Inst Bot, Beijing, Peoples R China 3.Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA 4.Jilin Univ, Coll Earth Sci, Changchun 130023, Peoples R China 5.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China 6.Auburn Univ, Int Ctr Climate & Global Change Res, Auburn, AL 36849 USA 7.Chinese Acad Sci, Inst Soil Sci, Nanjing, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Changchun,Wang, Lili,Tian, Hanqin,et al. Effect of continued nitrogen enrichment on greenhouse gas emissions from a wetland ecosystem in the Sanjiang Plain, Northeast China: A 5 year nitrogen addition experiment[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2013,118(2):741-751. |
| APA | Song, Changchun.,Wang, Lili.,Tian, Hanqin.,Liu, Deyan.,Lu, Chaoqun.,...&Wan, Zhongmei.(2013).Effect of continued nitrogen enrichment on greenhouse gas emissions from a wetland ecosystem in the Sanjiang Plain, Northeast China: A 5 year nitrogen addition experiment.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,118(2),741-751. |
| MLA | Song, Changchun,et al."Effect of continued nitrogen enrichment on greenhouse gas emissions from a wetland ecosystem in the Sanjiang Plain, Northeast China: A 5 year nitrogen addition experiment".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 118.2(2013):741-751. |
入库方式： OAI收割
来源：植物研究所
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