文献类型： 外文期刊
作者： Jiang, Yu 1 ; Qian, Haoyu 1 ; Huang, Shan 3 ; Zhang, Xingyue 5 ; Wang, Ling 6 ; Zhang, Li 7 ; Shen, Mingxing 8 ; Xiao, Xi 1 ;
作者机构： 1.Chinese Acad Agr Sci, Minist Agr, Inst Crop Sci, Beijing 100081, Peoples R China
2.Univ Exeter, Coll Life & Environm Sci, Dept Geog, Exeter EX4 4RJ, Devon, England
3.Jiangxi Agr Univ, Minist Educ, Nanchang 330045, Jiangxi, Peoples R China
4.Jiangxi Agr Univ, Jiangxi Key Lab Crop Physiol Ecol & Genet Breedin, Nanchang 330045, Jiangxi, Peoples R China
5.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA
6.Jiangsu Univ Sci & Technol, Sch Biotechnol, Zhenjiang 212018, Peoples R China
7.Nanjing Agr Univ, Inst Appl Ecol, Nanjing 210095, Jiangsu, Peoples R China
8.Jiangsu Acad Agr Sci, Inst Agr Sci Taihu Lake Dist, Suzhou 215100, Peoples R China
9.Hunan Acad Agr Sci, Inst Soil & Fertilizer, Changsha 410125, Hunan, Peoples R China
10.China Agr Univ, Minist Agr China, Key Lab Farming Syst, Coll Agron & Biotechnol, Beijing 100193, Peoples R China
期刊名称：SCIENCE ADVANCES （ 影响因子：14.136； 五年影响因子：16.446 ）
ISSN： 2375-2548
年卷期： 2019 年 5 卷 1 期
页码：
收录情况： SCI
摘要： Straw incorporation is a common long-term practice to improve soil fertility in croplands worldwide. However, straw amendments often increase methane (CH4) emissions from rice paddies, one of the main sources of anthropogenic CH4. Intergovernmental Panel on Climate Change (IPCC) methodologies to estimate CH4 emissions from rice agriculture assume that the effect of straw addition remains constant over time. Here, we show through a series of experiments and meta-analysis that these CH4 emissions acclimate. Effects of long-term (>5 years) straw application on CH4 emissions were, on average, 48% lower than IPCC estimates. Long-term straw incorporation increased soil methanotrophic abundance and rice root size, suggesting an increase in CH4 oxidation rates through improved O-2 transport into the rhizosphere. Our results suggest that recent model projections may have overestimated CH4 emissions from rice agriculture and that CH4 emission estimates can be improved by considering the duration of straw incorporation and other management practices.
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