气候变化领域集成服务门户(CCPortal): Spatial Variation of Reactive Nitrogen Emissions From China's Croplands Codetermined by Regional Urbanization and Its Feedback to Global Climate Change

CCPortal

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 P.; Chen A.; Houlton B.Z.; Zeng Z.; Wei S.; Zhao C.; Lu H.; Liao Y.; Zheng Z.; Luan S.; Zheng Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
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. ©2020 The Authors.
英文关键词	Agricultural robots; Ammonia; Earth (planet); Nitrogen oxides; Agricultural activities; Climate change impact; Climate forcings; Global climate changes; Nitrogen emissions; Reactive gaseous; Reactive nitrogen; Spatial variations; Climate change; agricultural land; climate change; climate forcing; cooling; global climate; global warming; Gross Domestic Product; Kuznets curve; nitrogen; spatial variation; urbanization; China
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170234
作者单位	School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan, China; Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States; John Muir Institute of the Environment and Department of Land, Air and Water Resources, University of California, Davis, CA, United States; School of Environment and Energy, Peking University, Shenzhen, China; Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, Southern University of Science and Technology, Shenzhen, China
推荐引用方式 GB/T 7714	Xu P.,Chen A.,Houlton B.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],2020,47(12).
APA	Xu P..,Chen A..,Houlton B.Z..,Zeng Z..,Wei S..,...&Zheng Y..(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 P.,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).