文献类型： 外文期刊
作者： Tang, Junqi 1 ; Qian, Haoyu 1 ; Zhu, Xiangcheng 1 ; Liu, Zhuoshu 1 ; Kuzyakov, Yakov 5 ; Zou, Jianwen 8 ; Wang, Jinyang 8 ; Xu, Qiang 9 ; Li, Ganghua 1 ; Liu, Zhenghui 1 ; Wang, Songhan 1 ; Zhang, Weijian 10 ; Zhang, Jun 10 ; Huang, Shan 11 ; Ding, Yanfeng 1 ; van Groenigen, Kees Jan 12 ; Jiang, Yu 1 ;
作者机构： 1.Nanjing Agr Univ, Key Lab Crop Physiol & Ecol Southern China, Nanjing, Peoples R China
2.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing, Peoples R China
3.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Nanjing, Peoples R China
4.Yichun Univ, Yichun, Peoples R China
5.Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Gottingen, Germany
6.Univ Goettingen, Dept Agr Soil Sci, Gottingen, Germany
7.Russia RUDN Univ, Peoples Friendship Univ, Moscow, Russia
8.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Peoples R China
9.Yangzhou Univ, Coinnovat Ctr Modern Prod Technol Grain Crops, Key Lab Crop Genet & Physiol Jiangsu Prov, Jiangsu Key Lab Crop Cultivat & Physiol, Yangzhou, Jiangsu, Peoples R China
10.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China
11.Jiangxi Agr Univ, Jiangxi Key Lab Crop Physiol Ecol & Genet Breeding, Nanchang, Peoples R China
12.Univ Exeter, Dept Geog, Fac Environm Sci & Econ, Exeter, England
关键词： meta-analysis; methane emissions; methanogens; methanotrophs; rice paddies; soil pH
期刊名称：GLOBAL CHANGE BIOLOGY （ 影响因子：12.0； 五年影响因子：14.0 ）
ISSN： 1354-1013
年卷期： 2024 年 30 卷 11 期
页码：
收录情况： SCI
摘要： Rice paddies account for approximately 9% of human-induced methane (CH4) emissions. Nitrogen (N) fertilization affects CH4 emissions from paddy soils through several mechanisms, leading to conflicting results in field experiments. The primary drivers of these N-related effects remain unclear and the contribution of N fertilization to CH4 emissions from the rice paddies has not yet been quantified for global area. This uncertainty contributes to significant challenges in projecting global CH4 emissions and hinders the development of effective local mitigation strategies. Here, we show through a meta-analysis and experiments that the impact of N fertilization on CH4 emissions from rice paddies can be largely predicted by soil pH. Specifically, N fertilization stimulates CH4 emissions most strongly in acidic soils by accelerating organic matter decomposition and increasing the activities of methanogens. Accounting for the interactions between soil pH and N fertilization, we estimate that N fertilization has raised current area-scaled and yield-scaled CH4 emissions across the total global paddy area by 52% and 8.2%, respectively. Our results emphasize the importance of alleviating soil acidification and sound N management practices to mitigate global warming.
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