Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086551 |
Spatial Variation of Reactive Nitrogen Emissions From China's Croplands Codetermined by Regional Urbanization and Its Feedback to Global Climate Change | |
Xu, Peng1,2; Chen, Anping3,4; Houlton, Benjamin Z.5,6; Zeng, Zhenzhong1; Wei, Song1,7; Zhao, Chenxu7; Lu, Haiyan1,2; Liao, Yajun7; Zheng, Zhonghua8; Luan, Shengji7; Zheng, Yi1,9,10 | |
2020-05-30 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Reactive gaseous nitrogen (Ngr) emissions significantly affect Earth's climate system. Disagreement exists, however, over Ngr contributions to short- versus long-term climate forcing, from local to global scales and among different gaseous forms, including NH3, NOx, and N2O. Here, we provide a comprehensive inventory of Ngr from China's croplands based on a new bottom-up, mass flow-based approach integrated with fine-resolution agricultural activity data and nitrogen emission factors. We demonstrate that China's croplands emit about 8.87 Tg N to the atmosphere in 2014. Across different prefectures, Ngr emission per capita conforms to a "Kuznets curve," that is, first increases then decreases, along the gradient of increasing urbanization. Ngr emission per gross domestic productivity (GDP) decreases exponentially with increasing urbanization or per capita GDP. Furthermore, climate change impact analyses suggest that the global-scale warming effect of China's cropland N2O emissions dominate over local cooling effects ascribed to its NH3 and NOx emissions. Plain Language Summary Reactive gaseous nitrogen, sourced to the world's highest fertilizer application rates in China, imparts local cooling effects on short time scales. The effects are ultimately counterbalanced by nitrous oxide emissions over the long term, leading to substantial warming effects on the global climate system. We base our conclusion on the first-ever high-resolution assessment of reactive nitrogen emissions to the atmosphere from China's croplands. Owing to limited high-resolution reactive gaseous nitrogen emissions data, hitherto, large uncertainties have existed in the detailing the role of China's cropland reactive gaseous nitrogen emissions on climate forcing. This paucity of information poses a challenge for informing China's agricultural sustainability policies with regard to maintaining/increasing agricultural yields while reduces reactive gaseous nitrogen emissions and their warming potential. Our analyses provide essential information for further sustainable N management and the interactions between agriculture and climate change. We provide policy-relevant information for mitigation targets, including the 2 degrees C limit goal set by the 2015 Paris Agreement of the United Nations Framework Convention on Climate Change, enabling progress related to multiple United Nations Sustainable Development Goals. |
英文关键词 | reactive gaseous nitrogen agricultural soils emission inventory urbanization climate change impacts |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551464800037 |
WOS关键词 | ESTIMATING NH3 EMISSIONS ; NITRIC-OXIDE EMISSIONS ; AMMONIA EMISSIONS ; AGRICULTURAL FERTILIZER ; INVENTORY ; IMPACTS ; POTENTIALS ; MITIGATION ; REDUCTION ; INVERSION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/271635 |
专题 | 气候变化 |
作者单位 | 1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China; 2.Wuhan Univ, Sch Water Resources & Hydropower Engn, Wuhan, Peoples R China; 3.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA; 4.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA; 5.Univ Calif Davis, John Muir Inst Environm, Davis, CA 95616 USA; 6.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA; 7.Peking Univ, Sch Environm & Energy, Shenzhen, Peoples R China; 8.Univ Illinois, Dept Civil & Environm Engn, Urbana, IL USA; 9.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen, Peoples R China; 10.Southern Univ Sci & Technol, Shenzhen Municipal Engn Lab Environm IoT Technol, Shenzhen, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Peng,Chen, Anping,Houlton, Benjamin Z.,et al. Spatial Variation of Reactive Nitrogen Emissions From China's Croplands Codetermined by Regional Urbanization and Its Feedback to Global Climate Change[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(12). |
APA | Xu, Peng.,Chen, Anping.,Houlton, Benjamin Z..,Zeng, Zhenzhong.,Wei, Song.,...&Zheng, Yi.(2020).Spatial Variation of Reactive Nitrogen Emissions From China's Croplands Codetermined by Regional Urbanization and Its Feedback to Global Climate Change.GEOPHYSICAL RESEARCH LETTERS,47(12). |
MLA | Xu, Peng,et al."Spatial Variation of Reactive Nitrogen Emissions From China's Croplands Codetermined by Regional Urbanization and Its Feedback to Global Climate Change".GEOPHYSICAL RESEARCH LETTERS 47.12(2020). |
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