A Meta-analysis of No-tillage Effects on Greenhouse Gas Emissions from Wheat-based Rotation Cropping Agroecosystem in China  

作　　者：YAN Guangxuan WANG Jieqi LUO Tingting CHEN Weiwei SHAO Yun LI Chunxi 

机构地区：[1]Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control(Ministry of Education),School of Environment,Henan Normal University,Xinxiang 453007,China [2]College of Life Sciences,Henan Normal University,Xinxiang 453007,China [3]Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China

出　　处：《Chinese Geographical Science》2023年第3期503-511,共9页中国地理科学（英文版）

基　　金：Under the auspices of the National Key Research and Development Program of China(No.2018YFD0300708-4);College Students’Innovative Entrepreneurial Training(No.202210476024)。

摘　　要：Globally,agricultural soils are considered as one of the most important sources of greenhouse gas(GHG)emissions.No-tillage(NT),one of the most admired ways of climate-smart agriculture,has been deemed to have co-benefit to mitigation of GHG emissions and sustainability for crop yield,however,the effect of NT on GHG emissions is controversial.This study analyzed the overall effects of NT on GHG emissions,as well as the moderators that significantly influenced the overall effects,of the wheat-based rotation cropping systems in China through meta-analysis.The results showed that the overall effect size of NT on methane(CH4)uptake,nitrous oxide(N2O)emission,and global warming potential(GWP)was 0.70(95%Confidence Interval(CI):0.21–1.19),-0.27(95%CI:-0.72–0.18),and-0.39(95%CI:-1.01–0.23),respectively.In temperate climate zones with alkaline soils,the nitrogen application rate of 120–240 kg/ha,NT could significantly reduce GHG emissions and GWP.However,the mitigation effect will be weakened along with NT duration,except for proper straw addition.Overall,NT has the potential to reduce GHG emissions from wheat-based rotation systems in China,but it is necessary to implement NT depending on local conditions,soil characteristics,and field management.

关 键 词：WHEAT soil ROTATION 

分 类 号：S181[农业科学—农业基础科学]