Exploring long-term effects of biochar on mitigating methane emissions from paddy soil:a review  

作　　者：Qiong Nan Liqing Xin Yong Qin Muhammad Waqas Weixiang Wu 

机构地区：[1]Institute of Environmental Science and Technology,College of Environment and Resource Science,Zhejiang University,Hangzhou 310029,People’s Republic of China [2]Department of Botanical and Environmental Science,Kohat University of Science and Technology,Kohat 26000,Khyber Pakhtunkhwa,Pakistan

出　　处：《Biochar》2021年第2期125-134,共10页生物炭（英文）

基　　金：supported by National Natural Science Foundation of China[Grant numbers 42077032 and 41571241];the National Key Technology Research and Development Program of the Ministry of Science and Technology of China[Grant number 2015BAC02B01];We thank the editors and reviewers for their constructive comments.

摘　　要：Biochar has been reported to mitigate short-term methane(CH4)emissions from paddy soil.Currently,CH4 mitigation by biochar has primarily focused on the abundance and variations of methanogens and methanotrophs,and changes in their activities during methane production and consumption.However,long-term effects of biochar on methane mitigation from paddy soil remain controversial.This review overviewed the existing mechanisms for CH4 mitigation as a result of biochar application.In addition,the two existing opinions on the long-term CH4 mitigation effect upon biochar application were highlighted.Combining the already explored mechanisms of fresh biochar on CH4 mitigation from paddy soil and a novel discovery,the potential mechanisms of biochar on long-term methane emission response were proposed.This review also revealed the uncertain responses of biochar on long-term CH4 mitigation.Therefore,to achieve carbon neutral goal,it is important to further explore the mechanisms of long-term CH4 mitigation under biochar application.

关 键 词：BIOCHAR Methane mitigation METHANOGENS METHANOTROPHS 

分 类 号：S15[农业科学—土壤学]