土壤碳
矿化(土壤科学)
生物炭
固碳
环境化学
土壤质量
碳纤维
土壤有机质
化学
环境科学
碳循环
生态系统
土壤科学
土壤水分
生态学
二氧化碳
热解
生物
材料科学
复合数
复合材料
有机化学
作者
Yalan Chen,Ke Sun,Yan Yang,Bo Gao,Hao Zheng
标识
DOI:10.1080/10643389.2023.2221155
摘要
AbstractAbstractBiochar (BC) has garnered extensive attention as a carbon sequestration solution. This study comprehensively reviews of the effects of BC on the buildup, protection, stabilization, and mineralization of soil organic carbon (SOC). The input of BC-derived carbon alters soil carbon quality by changing SOC content and aromaticity. BC also affects processes controlling substrate accessibility, such as physical protection of SOC by soil aggregates and organo-mineral interaction. Changes in soil carbon quality and physicochemical properties further alter carbon source availability and microbial habitat, thereby affecting the microbial decomposition of SOC. Of particular importance is the soil aggregation process, which regulates the distribution and turnover of microbial necromass and SOC fraction in different aggregates. The "microbial carbon pump" concept framework highlights the pivotal role of microbial necromass in the formation of soil stable carbon pool. BC can affect the accumulation and decomposition of microbial necromass carbon in the bulk soil and different aggregates, thereby changing the soil carbon pool composition and stability. The newly proposed "mineral carbon pump" hypothesis further emphasizes the crucial role of organo-mineral interaction in stabilizing SOC. Further research is required to understand the role of viable microbial biomass and dead microbial necromass in SOC turnover, as well as the extent and mechanism of the interaction between BC and soil minerals. Long-term ecosystem effects of BC, as well as the resilience of BC-soil system to climate change, need to be clarified to determine the rationality of BC application in the context of global change.Graphic abstractKeywords: Soil aggregatesmicrobial necromasssoil organic mattermineral associated organic matterdissolved organic matterpriming effectsHANDLING EDITORS: Dan Tsang and Lena Q. Ma AcknowledgmentsThis work was financially supported by the National Science Foundation for Distinguished Young Scholars (42125703) and National Natural Science Foundation (41977299).Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Data availabilityThe data used in this study are included in the article.
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