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Effects of Biochar on Methane Emissions and Crop Yields in East Asian Paddy Fields: A Regional Scale Meta-Analysis

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  • Jong-Mun Lee

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Hyun-Cheol Jeong

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Hyo-Suk Gwon

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Hyoung-Seok Lee

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Hye-Ran Park

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Guen-Sik Kim

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Do-Gyun Park

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

  • Sun-Il Lee

    (National Institute of Agricultural Sciences, Wanju 55365, Republic of Korea)

Abstract

Biochar emerged as a potential solution to mitigating greenhouse gas emissions, though previous studies obtained variable results regarding its effects on methane (CH 4 ) emissions and crop yields. Global meta-analyses were conducted regarding the effectiveness of biochar, though regional meta-analyses are still needed. We performed a meta-analysis of 43 published papers to obtain the central tendency of the response to biochar application in East Asian rice paddies. Biochar application significantly reduced methane emissions while increasing the soil organic carbon (SOC) content and crop yield. We identified the most significant influencing factors on the CH 4 emissions, SOC content, and crop yield. Our findings provide a scientific basis for the application of biochar to East Asian rice paddies, as well as to study the effects of biochar application in East Asian rice paddies. The numbers in parentheses represent the sample sizes.

Suggested Citation

  • Jong-Mun Lee & Hyun-Cheol Jeong & Hyo-Suk Gwon & Hyoung-Seok Lee & Hye-Ran Park & Guen-Sik Kim & Do-Gyun Park & Sun-Il Lee, 2023. "Effects of Biochar on Methane Emissions and Crop Yields in East Asian Paddy Fields: A Regional Scale Meta-Analysis," Sustainability, MDPI, vol. 15(12), pages 1-15, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9200-:d:1165474
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    References listed on IDEAS

    as
    1. Qi Zhang & Jing Xiao & Jianhui Xue & Lang Zhang, 2020. "Quantifying the Effects of Biochar Application on Greenhouse Gas Emissions from Agricultural Soils: A Global Meta-Analysis," Sustainability, MDPI, vol. 12(8), pages 1-14, April.
    2. Liu, Xiaoyu & Zhou, Tong & Liu, Yuan & Zhang, Xuhui & Li, Lianqing & Pan, Genxing, 2019. "Effect of mid-season drainage on CH4 and N2O emission and grain yield in rice ecosystem: A meta-analysis," Agricultural Water Management, Elsevier, vol. 213(C), pages 1028-1035.
    3. Chaudhary, V.P. & Singh, K.K. & Pratibha, G. & Bhattacharyya, Ranjan & Shamim, M. & Srinivas, I. & Patel, Anurag, 2017. "Energy conservation and greenhouse gas mitigation under different production systems in rice cultivation," Energy, Elsevier, vol. 130(C), pages 307-317.
    4. Johannes Lehmann, 2007. "A handful of carbon," Nature, Nature, vol. 447(7141), pages 143-144, May.
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    1. Hyoung-Seok Lee & Hyo-Suk Gwon & Sun-Il Lee & Hye-Ran Park & Jong-Mun Lee & Do-Gyun Park & So-Ra Lee & So-Hyeon Eom & Taek-Keun Oh, 2024. "Reducing Methane Emissions with Humic Acid–Iron Complex in Rice Cultivation: Impact on Greenhouse Gas Emissions and Rice Yield," Sustainability, MDPI, vol. 16(10), pages 1-14, May.

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