Soil organic carbon regulates CH4 production through methanogenic evenness and available phosphorus under different straw managements

Methane (CH4) is the main greenhouse gas emitted from rice paddy fields driven by methanogens, for which methanogenic abundance on CH4 production has been intensively investigated. However, information is limited about the relationship between methanogenic diversity (e.g., richness and evenness) and...

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Published in:Journal of environmental management 2023-02, Vol.328, p.116990-116990, Article 116990
Main Authors: Kan, Zheng-Rong, Wang, Zirui, Chen, Wei, Virk, Ahmad Latif, Li, Feng-Min, Liu, Jian, Xue, Yaguang, Yang, Haishui
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Language:English
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Available phosphorus
Methane
Methanogenic evenness
Soil organic carbon
Straw managements
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container_title Journal of environmental management
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Yang, Haishui
description Methane (CH4) is the main greenhouse gas emitted from rice paddy fields driven by methanogens, for which methanogenic abundance on CH4 production has been intensively investigated. However, information is limited about the relationship between methanogenic diversity (e.g., richness and evenness) and CH4 production. Three independent field experiments with different straw managements including returning method, burial depth, and burial amount were used to identify the effects of methanogenic diversity on CH4 production, and its regulating factors from soil properties in a rice–wheat cropping system. The results showed that methanogenic evenness (dominance) can explain 23% of variations in CH4 production potential. CH4 production potential was positively related to methanogenic evenness (R2 = 0.310, p 
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However, information is limited about the relationship between methanogenic diversity (e.g., richness and evenness) and CH4 production. Three independent field experiments with different straw managements including returning method, burial depth, and burial amount were used to identify the effects of methanogenic diversity on CH4 production, and its regulating factors from soil properties in a rice–wheat cropping system. The results showed that methanogenic evenness (dominance) can explain 23% of variations in CH4 production potential. CH4 production potential was positively related to methanogenic evenness (R2 = 0.310, p &lt; 0.001), which is driven by soil organic carbon (SOC), available phosphorus (AP), and nitrate (NO3−) through structure equation model (SEM). These findings indicate that methanogenic evenness has a critical role in evaluating the responses of CH4 production to agricultural practices following changes in soil properties. The SEM also revealed that SOC concentration influenced CH4 production potential indirectly via complementarity of methanogenic evenness (dominance) and available phosphorus (AP). Increasing SOC accumulation improved AP release and stimulated CH4 production when SOC was at a low level, whereas decreased evenness and suppressed CH4 production when SOC was at a high level. A nonlinear relationship was detected between SOC and CH4 production potential, and CH4 production potential decreased when SOC was ≥14.16 g kg−1. Our results indicated that the higher SOC sequestration can not only mitigate CO2 emissions directly but CH4 emissions indirectly, highlighting the importance to enhance SOC sequestration using optimum agricultural practices in a rice–wheat cropping system. •Methanogenic evenness favored CH4 production in a rice-wheat cropping system.•Low SOC improved AP release and stimulated CH4 production.•High SOC decreased evenness and suppressed CH4 production.</description><identifier>ISSN: 0301-4797</identifier><identifier>EISSN: 1095-8630</identifier><identifier>DOI: 10.1016/j.jenvman.2022.116990</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Available phosphorus ; Methane ; Methanogenic evenness ; Soil organic carbon ; Straw managements</subject><ispartof>Journal of environmental management, 2023-02, Vol.328, p.116990-116990, Article 116990</ispartof><rights>2022 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c342t-5155549dd8e1cd994b3e01b5e84b8426660f80bb7e7989f19685e370b2e6aeba3</citedby><cites>FETCH-LOGICAL-c342t-5155549dd8e1cd994b3e01b5e84b8426660f80bb7e7989f19685e370b2e6aeba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail></links><search><creatorcontrib>Kan, Zheng-Rong</creatorcontrib><creatorcontrib>Wang, Zirui</creatorcontrib><creatorcontrib>Chen, Wei</creatorcontrib><creatorcontrib>Virk, Ahmad Latif</creatorcontrib><creatorcontrib>Li, Feng-Min</creatorcontrib><creatorcontrib>Liu, Jian</creatorcontrib><creatorcontrib>Xue, Yaguang</creatorcontrib><creatorcontrib>Yang, Haishui</creatorcontrib><title>Soil organic carbon regulates CH4 production through methanogenic evenness and available phosphorus under different straw managements</title><title>Journal of environmental management</title><description>Methane (CH4) is the main greenhouse gas emitted from rice paddy fields driven by methanogens, for which methanogenic abundance on CH4 production has been intensively investigated. 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The SEM also revealed that SOC concentration influenced CH4 production potential indirectly via complementarity of methanogenic evenness (dominance) and available phosphorus (AP). Increasing SOC accumulation improved AP release and stimulated CH4 production when SOC was at a low level, whereas decreased evenness and suppressed CH4 production when SOC was at a high level. A nonlinear relationship was detected between SOC and CH4 production potential, and CH4 production potential decreased when SOC was ≥14.16 g kg−1. Our results indicated that the higher SOC sequestration can not only mitigate CO2 emissions directly but CH4 emissions indirectly, highlighting the importance to enhance SOC sequestration using optimum agricultural practices in a rice–wheat cropping system. •Methanogenic evenness favored CH4 production in a rice-wheat cropping system.•Low SOC improved AP release and stimulated CH4 production.•High SOC decreased evenness and suppressed CH4 production.</description><subject>Available phosphorus</subject><subject>Methane</subject><subject>Methanogenic evenness</subject><subject>Soil organic carbon</subject><subject>Straw managements</subject><issn>0301-4797</issn><issn>1095-8630</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqFkM-KFDEQxoMoOK4-gpCjlx4r6aS7cxIZ1BUW9rB6DvlT3ZOhOxmT9IgP4Hvbw-zdQ1FQ9X1FfT9C3jPYM2Ddx9P-hPGymLjnwPmesU4peEF2DJRshq6Fl2QHLbBG9Kp_Td6UcgKAlrN-R_4-pTDTlCcTg6POZJsizTits6lY6OFe0HNOfnU1bIt6zGmdjnTBejQxTXg14QVjxFKoiZ6aiwmzsTPS8zGVrfJa6Bo9ZurDOGLGWGmp2fym28NmwmUblLfk1Wjmgu-e-x35-fXLj8N98_D47fvh80PjWsFrI5mUUijvB2TOKyVsi8CsxEHYQfCu62AcwNoeezWokalukNj2YDl2Bq1p78iH290t068VS9VLKA7n2URMa9G8lwJELyTfpPImdTmVknHU5xwWk_9oBvqKXZ_0M3Z9xa5v2Dffp5sPtxyXgFkXFzA69CGjq9qn8J8L_wC2YJF4</recordid><startdate>20230215</startdate><enddate>20230215</enddate><creator>Kan, Zheng-Rong</creator><creator>Wang, Zirui</creator><creator>Chen, Wei</creator><creator>Virk, Ahmad Latif</creator><creator>Li, Feng-Min</creator><creator>Liu, Jian</creator><creator>Xue, Yaguang</creator><creator>Yang, Haishui</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20230215</creationdate><title>Soil organic carbon regulates CH4 production through methanogenic evenness and available phosphorus under different straw managements</title><author>Kan, Zheng-Rong ; Wang, Zirui ; Chen, Wei ; Virk, Ahmad Latif ; Li, Feng-Min ; Liu, Jian ; Xue, Yaguang ; Yang, Haishui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c342t-5155549dd8e1cd994b3e01b5e84b8426660f80bb7e7989f19685e370b2e6aeba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Available phosphorus</topic><topic>Methane</topic><topic>Methanogenic evenness</topic><topic>Soil organic carbon</topic><topic>Straw managements</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kan, Zheng-Rong</creatorcontrib><creatorcontrib>Wang, Zirui</creatorcontrib><creatorcontrib>Chen, Wei</creatorcontrib><creatorcontrib>Virk, Ahmad Latif</creatorcontrib><creatorcontrib>Li, Feng-Min</creatorcontrib><creatorcontrib>Liu, Jian</creatorcontrib><creatorcontrib>Xue, Yaguang</creatorcontrib><creatorcontrib>Yang, Haishui</creatorcontrib><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of environmental management</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kan, Zheng-Rong</au><au>Wang, Zirui</au><au>Chen, Wei</au><au>Virk, Ahmad Latif</au><au>Li, Feng-Min</au><au>Liu, Jian</au><au>Xue, Yaguang</au><au>Yang, Haishui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Soil organic carbon regulates CH4 production through methanogenic evenness and available phosphorus under different straw managements</atitle><jtitle>Journal of environmental management</jtitle><date>2023-02-15</date><risdate>2023</risdate><volume>328</volume><spage>116990</spage><epage>116990</epage><pages>116990-116990</pages><artnum>116990</artnum><issn>0301-4797</issn><eissn>1095-8630</eissn><abstract>Methane (CH4) is the main greenhouse gas emitted from rice paddy fields driven by methanogens, for which methanogenic abundance on CH4 production has been intensively investigated. However, information is limited about the relationship between methanogenic diversity (e.g., richness and evenness) and CH4 production. Three independent field experiments with different straw managements including returning method, burial depth, and burial amount were used to identify the effects of methanogenic diversity on CH4 production, and its regulating factors from soil properties in a rice–wheat cropping system. The results showed that methanogenic evenness (dominance) can explain 23% of variations in CH4 production potential. CH4 production potential was positively related to methanogenic evenness (R2 = 0.310, p &lt; 0.001), which is driven by soil organic carbon (SOC), available phosphorus (AP), and nitrate (NO3−) through structure equation model (SEM). These findings indicate that methanogenic evenness has a critical role in evaluating the responses of CH4 production to agricultural practices following changes in soil properties. The SEM also revealed that SOC concentration influenced CH4 production potential indirectly via complementarity of methanogenic evenness (dominance) and available phosphorus (AP). Increasing SOC accumulation improved AP release and stimulated CH4 production when SOC was at a low level, whereas decreased evenness and suppressed CH4 production when SOC was at a high level. A nonlinear relationship was detected between SOC and CH4 production potential, and CH4 production potential decreased when SOC was ≥14.16 g kg−1. Our results indicated that the higher SOC sequestration can not only mitigate CO2 emissions directly but CH4 emissions indirectly, highlighting the importance to enhance SOC sequestration using optimum agricultural practices in a rice–wheat cropping system. •Methanogenic evenness favored CH4 production in a rice-wheat cropping system.•Low SOC improved AP release and stimulated CH4 production.•High SOC decreased evenness and suppressed CH4 production.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.jenvman.2022.116990</doi><tpages>1</tpages></addata></record>
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subjects Available phosphorus
Methane
Methanogenic evenness
Soil organic carbon
Straw managements
title Soil organic carbon regulates CH4 production through methanogenic evenness and available phosphorus under different straw managements
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