Spatiotemporal variations of atmospheric nitrogen deposition in China during 2008-2020
文献类型：期刊论文
| 作者 | Chen, Shiliang8; Chen, Bin7; Wang, Shaoqiang5,6,7,8; Sun, Leigang3,4; Shi, Hao2; Liu, Zhenhai7; Wang, Qinyi8; Li, Hui8; Zhu, Tongtong8; Li, Donghui8 |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2023-12-15 |
| 卷号 | 315页码:15 |
| 关键词 | Random forest models Reduced and oxidized nitrogen NO (x )and SO (2 )emission NH( 3 )emission Atmospheric deposition China |
| ISSN号 | 1352-2310 |
| DOI | 10.1016/j.atmosenv.2023.120120 |
| 通讯作者 | Wang, Shaoqiang(sqwang@igsnrr.ac.cn) ; Sun, Leigang(sunleigang07@mails.ucas.ac.cn) |
| 英文摘要 | In recent decades, China has been a hotspot for reactive nitrogen (N) deposition due to intensive fossil fuel burning and increased agricultural activities. The Chinese government has implemented active measures to protect air quality and reduce N deposition. In this study, we combined monthly measurements of monitoring sites and satellite data to construct random forest (RF) models for the estimation of monthly N deposition in China during 2008-2020. This provides N deposition estimation in latest years and has a finer temporal resolution. The RF models can address more complicated relationships between variables and performed well in estimating N deposition compared to the measurements with average correlation coefficients of 0.79 and 0.77 for dry and wet N deposition, respectively. We found that mean annual total N deposition was 22.0 +/- 0.8 kg N ha(-1) yr(-1) during 2008-2020, which accounted for 64% (+/- 4%) of reactive N emissions in China. Although the total N deposition was high, it has stabilized and decreased slightly over the past decade, with dry and wet N deposition contributing equally to the total N deposition. NHx deposition (F-NHx) still slowly increased (0.09 kg N ha(-1) yr(-2)) during 2015-2020, when N fertilizer application and livestock started to decrease. This is due to the rapid decline in NOx and SO2 emissions during the same period. Our results provide a new perspective on the spatiotemporal variations in the total N deposition in China. It is necessary to optimize other emission reduction strategies to mitigate air pollution and N deposition. |
| WOS关键词 | TREND ANALYSIS ; IMPACTS ; EMISSIONS ; PLANT ; PRECIPITATION ; TEMPERATURE ; VARIABILITY ; INCREASE ; COLUMNS ; SO2 |
| 资助项目 | CUG Scholar Scientific Research Funds at China University of Geosciences[2019004] ; Carbon Cycle of Forest Ecosystem in Mufu Mountain[GKZ21Y653] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23100202] ; Science and Technology Planning Project of Hebei Academy of Sciences, China[22A03] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001165297100001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | CUG Scholar Scientific Research Funds at China University of Geosciences ; Carbon Cycle of Forest Ecosystem in Mufu Mountain ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Science and Technology Planning Project of Hebei Academy of Sciences, China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/202773]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Shaoqiang; Sun, Leigang |
| 作者单位 | 1.China Univ Geosci, Hubei Key Lab Intelligent Geoinformat Proc, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Hebei Technol Innovat Ctr Geog Informat Applicat, Shijiazhuang 050011, Peoples R China 4.Hebei Acad Sci, Inst Geog Sci, Shijiazhuang 050011, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 6.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 8.China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Reg Ecol & Environm Change, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Shiliang,Chen, Bin,Wang, Shaoqiang,et al. Spatiotemporal variations of atmospheric nitrogen deposition in China during 2008-2020[J]. ATMOSPHERIC ENVIRONMENT,2023,315:15. |
| APA | Chen, Shiliang.,Chen, Bin.,Wang, Shaoqiang.,Sun, Leigang.,Shi, Hao.,...&Wang, Lizhe.(2023).Spatiotemporal variations of atmospheric nitrogen deposition in China during 2008-2020.ATMOSPHERIC ENVIRONMENT,315,15. |
| MLA | Chen, Shiliang,et al."Spatiotemporal variations of atmospheric nitrogen deposition in China during 2008-2020".ATMOSPHERIC ENVIRONMENT 315(2023):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。