Four decades of full-scale nitrous oxide emission inventory in China

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外文摘要：China is among the top nitrous oxide(N2O)-emitting countries,but existing national inventories do not provide full-scale emissions including both natural and anthropogenic sources.We conducted a four-decade(1980-2020)of comprehensive quantification of Chinese N2O inventory using empirical emission factor method for anthropogenic sources and two up-to-date process-based models for natural sources.Total N2O emissions peaked at 2287.4(1774.8-2799.9)Gg N2O yr-1 in 2018,and agriculture-developed regions,like the East,Northeast,and Central,were the top N2O-emitting regions.Agricultural N2O emissions have started to decrease after 2016 due to the decline of nitrogen fertilization applications,while,industrial and energetic sources have been dramatically increasing after 2005.N2O emissions from agriculture,industry,energy,and waste represented 49.3％,26.4％,17.5％,and 6.7％of the anthropogenic emissions in 2020,respectively,which revealed that it is imperative to prioritize N2O emission mitigation in agriculture,industry,and energy.Natural N2O sources,dominated by forests,have been steadily growing from 317.3(290.3-344.1)GgN2Oyr-1 in 1980 to 376.2(335.5-407.2)GgN2Oyr-1 in 2020.Our study produces a Full-scale Annual N2O dataset in China(FAN2020),providing emergent counting to refine the current national N2O inventories.

外文关键词：

nitrous oxidefour decadesanthropogenic sourcesnatural sources

作者：

Minqi Liang、Zheyan Zhou、Peiyang Ren、Han Xiao、Xu-Ri、Zhongmin Hu、Shilong Piao、Hanqin Tian、Qing Tong、Feng Zhou、Jing Wei、Wenping Yuan

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作者单位：

School of Atmospheric Sciences,Guangdong Province Data Center of Terrestrial and Marine Ecosystems Carbon Cycle,Sun Yat-sen University,Zhuhai 510245,China

State Key Laboratory of Tibetan Plateau Earth System,Resources and Environment,Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China

Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province,Hainan University,Haikou 570228,China

Sino-French Institute for Earth System Science,College of Urban and Environmental Sciences,Peking University,Beijing 100871,China

Schiller Institute for Integrated Science and Society,Department of Earth and Environmental Sciences,Boston College,Chestnut Hill,MA 02467,USA

Institute of Energy,Environment and Economy,Tsinghua University,Beijing 100084,China

Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai 519082,China

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基金：

国家自然科学基金

项目编号：

41925001

出版年：

2024

DOI：

10.1093/nsr/nwad285

国家科学评论(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.11(3)

参考文献量63