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

Jong-Mun Lee, Hyun-Cheol Jeong, Hyo-Suk Gwon, Hyoung-Seok Lee, Hye-Ran Park, Guen-Sik Kim, Do-Gyun Park and Sun-Il Lee ()
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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

Sustainability, 2023, vol. 15, issue 12, 1-15

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.

Keywords: biochar; climate change; East Asia; methane; soil organic carbon; crop yield (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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