Stimulated or Inhibited Response of Methane Flux to Nitrogen Addition Depends on Nitrogen Levels
文献类型：期刊论文
| 作者 | Chang, Ruiying3; Liu, Xinyu3; Wang, Tao3; Li, Na1,2; Bing, Haijian3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 126期号:11页码:10 |
| ISSN号 | 2169-8953 |
| 关键词 | methane uptake dissolved organic carbon seasonal pattern nitrogen deposition montane forest |
| DOI | 10.1029/2021JG006600 |
| 英文摘要 | Upland forest soil is significant atmospheric methane (CH4) sink that is suggested to be affected by increased nitrogen (N) availability, likely from N deposition or addition. However, the effect of N addition on upland soil CH4 uptake and the underlying mechanisms remain unclear. Here, in a montane forest, frequent in situ sampling over three years revealed that this forest soil was a sink of atmospheric CH4 with an uptake rate of 304.9 +/- 26.9 mg CH4/m(2)/yr under ambient treatment. High N addition suppressed CH4 uptake by 23.2% compared to ambient conditions, whereas low N addition stimulated CH4 uptake by 35.6%. N addition did not change the monthly pattern of CH4 flux, which was quite similar to the pattern of leachate dissolved organic carbon (DOC) concentrations from the organic layer. The linear relationship between the CH4 flux and DOC concentration indicated increased CH4 uptake with an increase in DOC. The induced decrease in CH4 uptake under high N addition was partly related to the high soil N availability and partly contributed to a decrease in DOC due to high N addition. In contrast, the increased CH4 uptake under temporarily low N addition was most likely correlated with a release in N limitation to CH4-oxidizing bacteria. These results indicated that the effect of N addition on CH4 uptake was dependent on the level of N, and DOC could regulate CH4 uptake in upland soil, which should be investigated in depth when understanding the responses of dynamic CH4 fluxes to N additions. |
| WOS关键词 | ATMOSPHERIC METHANE ; SOIL ; OXIDATION ; FOREST ; CONSUMPTION ; DEPOSITION ; FERTILIZERS ; COVER |
| 资助项目 | second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK060602] ; Natural Science Foundation of China[41977398] ; Youth Innovation Promotion Association CAS[2018406] ; Institute of Mountain Hazards and Environment CAS |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000722469900014 |
| 资助机构 | second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Institute of Mountain Hazards and Environment CAS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/56328]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Chang, Ruiying |
| 作者单位 | 1.Chinese Acad Sci, Biodivers Conservat Key Lab Sichuan Prov, Chengdu Inst Biol, Chengdu, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu Inst Biol, Chengdu, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Ruiying,Liu, Xinyu,Wang, Tao,et al. Stimulated or Inhibited Response of Methane Flux to Nitrogen Addition Depends on Nitrogen Levels[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2021,126(11):10. |
| APA | Chang, Ruiying,Liu, Xinyu,Wang, Tao,Li, Na,&Bing, Haijian.(2021).Stimulated or Inhibited Response of Methane Flux to Nitrogen Addition Depends on Nitrogen Levels.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,126(11),10. |
| MLA | Chang, Ruiying,et al."Stimulated or Inhibited Response of Methane Flux to Nitrogen Addition Depends on Nitrogen Levels".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 126.11(2021):10. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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。