How does biochar aging affect NH3 volatilization and GHGs emissions from agricultural soils?
文献类型： 外文期刊
作者： Feng, Yuanyuan 1 ; Feng, Yanfang 1 ; Liu, Qi 3 ; Chen, Sen 3 ; Hou, Pengfu 1 ; Poinern, Gerrard 2 ; Jiang, Zhongtao 2 ; Fawcett, Derek 2 ; Xue, Lihong 1 ; Lam, Su Shiung 4 ; Xia, Changlei 5 ;
作者机构： 1.Jiangsu Acad Agr Sci, State Key Lab Cultivat Base,Minist Sci & Technol, Inst Agr Resources & Environm,Key Lab Agroenviron, Coll Sci,Minist Agr & Rural Affairs,Jiangsu Key L, Nanjing 210014, Peoples R China
2.Murdoch Univ, Murdoch Appl Innovat Nanotechnol Res Grp, Surface Anal & Mat Engn Res Grp, Coll Sci Hlth Engn & Educ, Perth, WA 5150, Australia
3.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, 159 Longpan Rd, Nanjing 210037, Peoples R China
4.Univ Malaysia Terengganu, Inst Trop Aquaculture & Fisheries AKUATROP, Higher Inst Ctr Excellence HICoE, Terengganu 21030, Malaysia
5.Nanjing Forestry Univ, Coll Mat Sci & Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Jiangsu, Peoples R China
关键词： Biochar aging; Pyrochar and hydrochar; Agricultural soil; Gas emissions; Meta-analysis
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：9.988； 五年影响因子：10.366 ）
ISSN： 0269-7491
年卷期： 2022 年 294 卷
页码：
收录情况： SCI
摘要： Biochar has been considered as a potential tool to mitigate soil ammonia (NH3) volatilization and greenhouse gases (GHGs) emissions in recent years. However, the aging effect of biochar on soils remains elusive, which introduces uncertainty on the effectiveness of biochar to mitigate global warming in a long term. Here, a metaanalysis of 22 published works of literature with 217 observations was conducted to systematically explore the aging effect of biochar on soil NH3 and GHGs emissions. The results show that, in comparison with the fresh biochar, the aging makes biochar more effective to decrease soil NH3 volatilization by 7% and less risk to contribute CH4 emissions by 11%. However, the mitigation effect of biochar on soil N2O emissions is decreased by 15% due to aging. Additionally, aging leads to a promotion effect on soil CO2 emissions by 25% than fresh biochar. Our findings suggest that along with aging, particularly the effect of artificial aging, biochar could further benefit the alleviation of soil NH3 volatilization, whereas its potential role to mitigate global warming may decrease. This study provides a systematic assessment of the aging effect of biochar to mitigate soil NH3 and GHGs, which can provide a scientific basis for the sustainable green development of biochar application.
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