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dc.contributorDang, Yutengen_US
dc.contributorWang, Jinxiaen_US
dc.contributorHuang, Qiuen_US
dc.contributorWang, Xiu‐Kangen_US
dc.contributorYao, Liruen_US
dc.contributorNangia, Vinayen_US
dc.contributorYu, Kailiangen_US
dc.contributorWen, Xiaoxiaen_US
dc.contributorXiong, You‐Caien_US
dc.contributorLiao, Yunchengen_US
dc.contributorHan, Juanen_US
dc.contributorMo, Feien_US
dc.creatorZhang, Yeyeen_US
dc.identifier.citationYeye Zhang, Yuteng Dang, Jinxia Wang, Qiu Huang, Xiu‐Kang Wang, Liru Yao, Vinay Nangia, Kailiang Yu, Xiaoxia Wen, You‐Cai Xiong, Yuncheng Liao, Juan Han, Fei Mo. (12/10/2022). A synthesis of soil organic carbon mineralization in response to biochar amendment. Soil Biology and Biochemistry, 175.en_US
dc.description.abstractBiochar amendment can alter native soil organic carbon (SOC) mineralization via the priming effect (PE); however, its direction, intensity, and controls over a broad geographic scale are not clear, undermining the predictions of SOC dynamics as impacted by biochar inputs. Here, we synthesized 5,720 measurements of CO2 effluxes from 329 soil samples with and without 13C/14C labeled-biochar additions to quantify the spatial pat terns and temporal dynamics of the PE and assess the underlying environmental drivers. Across all data, biochar amendment has led to a slight but significant positive PE (i.e., 56 mg C kg− 1 soil), with stronger PEs in natural ecosystems than in agricultural soils. Negative PE occurred in the short term (i.e., <9 days after biochar addition) and subsequently shifted to a strong positive PE (i.e., 364–966 days) and remained in an insignificant PE thereafter (i.e., >1450 days). Notably, soils from rainfed croplands had the lowest negative PE (− 28.76 mg C kg− 1 soil). Grass-derived biochar produced at a low pyrolysis temperature (i.e., 300–400 ◦C) induced the strongest positive PE (244 mg C kg− 1 soil). The results of our structural equation model indicated that biochar pyrolysis temperature and soil C:N ratio had the largest negative and direct association with biochar-induced PE, whereas incubation temperature and microbial biomass C exerted the greatest positive and direct effects on the PE. Variance partitioning analyses further revealed that both biochar and soil properties together accounted for 73% of the explained variance in biochar-induced PE. Overall, these results add to our understanding of biochar induced SOC priming as impacted by different land-use types, soils, and biochar properties. The amendment of wood-derived biochars produced at high pyrolysis temperatures (>500 ◦C) to rainfed croplands could serve as a promising strategy to achieve maximum soil C sequestrationen_US
dc.publisherElsevier (12 months)en_US
dc.sourceSoil Biology and Biochemistry;175,(2022)en_US
dc.subjectsystematic reviewen_US
dc.subjectpriming effecten_US
dc.titleA synthesis of soil organic carbon mineralization in response to biochar amendmenten_US
dc.typeJournal Articleen_US
cg.creator.idNangia, Vinay: 0000-0001-5148-8614en_US
cg.subject.agrovocsoil organic carbonen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerLanzhou Universityen_US
cg.contributor.centerPrinceton Universityen_US
cg.contributor.centerNorthwest A&F University - NWSUAFen_US
cg.contributor.centerYan'an University - YANANen_US
cg.contributor.centerShanxi Agricultural University - SXAUen_US
cg.contributor.crpCGIAR Research Program on Water, Land and Ecosystems - WLEen_US
cg.contributor.funderGovernment of Chinaen_US
cg.contributor.projectChina Bilateral Program 2020 -2021-2022-2023 Implementation Fundingen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
cg.journalSoil Biology and Biochemistryen_US

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