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Effect of soil mulching on agricultural greenhouse gas emissions in China: A meta-analysis

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  • Chan Guo
  • Xufei Liu

Abstract

Human demand for food has been increasing as population grows around the world. Meanwhile, global temperature has been rising with the increase of greenhouse gas (GHG) emissions. Although soil mulching (SM) is an effective method to increase crop yield because it could conserve soil moisture and temperature, it is also an important factor affecting GHG productions and emissions. At present, research results in terms of the impact of SM on agricultural GHG emissions are still inconsistent. Therefore, a meta-analysis was used to quantitatively analyze the impact of SM on crop yield and GHG emissions in China. Overall, SM significantly enhanced not only crop yield, but also GHG emissions. Compared with no soil mulching (NSM), SM improved crop yield by 21.84%, while increased global warming potential (GWP) by 11.38%. To minimize the negative impact of SM on GHG, for maize and wheat in arid, semi-arid and semi-humid zones, it is recommended to use flat full mulching with grave or straw plus drip irrigation under neutral or weakly alkaline soil with bulk density

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  • Chan Guo & Xufei Liu, 2022. "Effect of soil mulching on agricultural greenhouse gas emissions in China: A meta-analysis," PLOS ONE, Public Library of Science, vol. 17(1), pages 1-14, January.
    • Handle: RePEc:plo:pone00:0262120
    DOI: 10.1371/journal.pone.0262120
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    References listed on IDEAS

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