文献类型： 外文期刊

作者： Qian, Haoyu ¹ ; Zhang, Nan ¹ ; Chen, Junjie ¹ ; Chen, Changqing ¹ ; Hungate, Bruce A. ² ; Ruan, Junmei ³ ; Huang, Shan ⁴ ; Cheng, Kun ⁶ ; Song, Zhenwei ³ ; Hou, Pengfu ⁷ ; Zhang, Bin ⁸ ; Zhang, Jun ³ ; Wang, Zhen ¹ ; Zhang, Xiuying ⁹ ; Li, Ganghua ¹ ; Liu, Zhenghui ¹ ; Wang, Songhan ¹ ; Zhou, Guiyao ¹⁰ ; Zhang, Weijian ³ ; Ding, Yanfeng ¹ ; van Groenigen, Kees Jan ³ ; Jiang, Yu ¹ ;

作者机构： 1.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Nanjing 210095, Peoples R China

2.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA

3.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

4.Jiangxi Agr Univ, Minist Educ, Nanchang 330045, Jiangxi, Peoples R China

5.Jiangxi Agr Univ, Jiangxi Key Lab Crop Physiol Ecol & Genet Breedin, Nanchang 330045, Jiangxi, Peoples R China

6.Nanjing Agr Univ, Inst Resource Ecosyst & Environm Agr, Nanjing 210095, Peoples R China

7.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

8.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

9.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Peoples R China

10.East China Normal Univ, Sch Ecol & Environm Sci, Zhejiang Tiantong Forest Ecosystem Natl Observat, Shanghai 200062, Peoples R China

11.Univ Exeter, Dept Geog, Coll Life & Environm Sci, Exeter EX4 4RJ, Devon, England

关键词： warming; methane emissions; rice; meta-analysis; methanogens; methanotrophs

期刊名称：ENVIRONMENTAL SCIENCE & TECHNOLOGY （ 影响因子：11.357； 五年影响因子：12.154 ）

ISSN： 0013-936X

年卷期： 2022 年 56 卷 8 期

页码：

收录情况： SCI

摘要： Global warming is expected to affect methane(CH4) emissions from rice paddies, one of the largest human-induced sources of this potent greenhouse gas. However, the largevariability in warming impacts on CH4emissions makes it difficultto extrapolate the experimental results over large regions. Here, weshow, through meta-analysis and multi-site warming experimentsusing the free air temperature increase facility, that warmingstimulates CH4emissions most strongly at background airtemperatures during theflooded stage of similar to 26 degrees C, with smallerresponses of CH4emissions to warming at lower and highertemperatures. This pattern can be explained by divergent warmingresponses of plant growth, methanogens, and methanotrophs. Theeffects of warming on rice biomass decreased with the backgroundair temperature. Warming increased the abundance of methanogens more strongly at the medium air temperature site than the lowand high air temperature sites. In contrast, the effects of warming on the abundance of methanotrophs were similar across the threetemperature sites. We estimate that 1 degrees C warming will increase CH4emissions from paddies in China by 12.6%& xe0d5;substantiallyhigher than the estimates obtained from leading ecosystem models. Ourfindings challenge model assumptions and suggest that theestimates of future paddy CH4emissions need to consider both plant and microbial responses to warming.