Suppression of Nitrogen Deposition on Global Forest Soil CH4 Uptake Depends on Nitrogen Status
文献类型：期刊论文
| 作者 | Cen, Xiaoyu6,7,8; He, Nianpeng4,5,8; Li, Mingxu4,8; Xu, Li7,8; Yu, Xueying6; Cai, Weixiang3; Li, Xin7,8; Butterbach-Bahl, Klaus1,2 |
| 刊名 | GLOBAL BIOGEOCHEMICAL CYCLES
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 38期号:7页码:16 |
| 关键词 | biogeochemistry greenhouse gas global warming nitrogen limitation nitrogen pollution |
| ISSN号 | 0886-6236 |
| DOI | 10.1029/2024GB008098 |
| 英文摘要 | Methane (CH4) is the second most important atmospheric greenhouse gas (GHG) and forest soils are a significant sink for atmospheric CH4. Uptake of CH4 by global forest soils is affected by nitrogen (N) deposition; clarifying the effect of N deposition helps to reduce uncertainties of the global CH4 budget. However, it remains an unsolved puzzle why N input stimulates soil CH4 uptake in some forests while suppressing it in others. Combining previous findings and data from N addition experiments conducted in global forests, we proposed and tested a "stimulating-suppressing-weakened effect" ("three stages") hypothesis on the changing responses of soil CH4 flux (R-CH4) to N input. Specifically, we calculated the response factors (f) of R-CH4 to N input for N-limited and N-saturated forests across biomes; the phased changes in f values supported our hypothesis. We also estimated the global forest soil CH4 uptake budget to be approximately 11.2 Tg yr(-1). CH4 uptake hotspots were predominantly located in temperate forests. Furthermore, we quantified that the current level of N deposition reduced global forest soil CH4 uptake by similar to 3%. This suppression effect was more pronounced in temperate forests than in tropical or boreal forests, likely due to differences in N status. The proposed "three stages" hypothesis in this study generalizes the diverse effects of N input on RCH4, which could help improve experimental design. Additionally, our findings imply that by regulating N pollution and reducing N deposition, soil CH4 uptake can be significantly increased in the N-saturated forests in tropical and temperate biomes. |
| WOS关键词 | ATMOSPHERIC METHANE CONSUMPTION ; GREENHOUSE-GAS EMISSIONS ; OXIDE EMISSIONS ; TEMPERATE FOREST ; SPRUCE FOREST ; N2O EMISSIONS ; SUBTROPICAL PLANTATION ; NONLINEAR RESPONSE ; TROPICAL FORESTS ; MIXED FOREST |
| 资助项目 | CAS Project for Young Scientists in Basic Research[YSBR-037] ; National Key R&D Program of China[2022YFF080210102] ; National Natural Science Foundation of China[42141004] ; Danish National Research Foundation(DNRF) ; P2 Pioneer Center for Research in Sustainable Agricultural Futures(Land-CRAFT) |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001262345200001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | CAS Project for Young Scientists in Basic Research ; National Key R&D Program of China ; National Natural Science Foundation of China ; Danish National Research Foundation(DNRF) ; P2 Pioneer Center for Research in Sustainable Agricultural Futures(Land-CRAFT) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207546]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | He, Nianpeng |
| 作者单位 | 1.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Atmospher Environm Res, Garmisch Partenkirchen, Germany 2.Aarhus Univ, Pioneer Ctr Land CRAFT, Dept Agroecol, Aarhus, Denmark 3.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing, Peoples R China 4.Chinese Acad Sci, Earth Crit Zone & Flux Res Stn Xingan Mt, Daxinganling, Peoples R China 5.Northeast Forestry Univ, Key Lab Sustainable Forest Ecosyst Management, Minist Educ, Harbin, Peoples R China 6.Stanford Univ, Dept Earth Syst Sci, Stanford, CA USA 7.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cen, Xiaoyu,He, Nianpeng,Li, Mingxu,et al. Suppression of Nitrogen Deposition on Global Forest Soil CH4 Uptake Depends on Nitrogen Status[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2024,38(7):16. |
| APA | Cen, Xiaoyu.,He, Nianpeng.,Li, Mingxu.,Xu, Li.,Yu, Xueying.,...&Butterbach-Bahl, Klaus.(2024).Suppression of Nitrogen Deposition on Global Forest Soil CH4 Uptake Depends on Nitrogen Status.GLOBAL BIOGEOCHEMICAL CYCLES,38(7),16. |
| MLA | Cen, Xiaoyu,et al."Suppression of Nitrogen Deposition on Global Forest Soil CH4 Uptake Depends on Nitrogen Status".GLOBAL BIOGEOCHEMICAL CYCLES 38.7(2024):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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