生物炭影响抗生素在土壤中环境行为的Meta分析

生物炭作为一种减污降碳相协同的土壤改良剂，在抗生素污染控制方面均有较大应用前景.为了系统研究生物炭施用对抗生素在土壤中环境行为的影响，对2011～2021年发表的20篇文献进行Meta分析.结果表明，抗生素在生物炭改良土壤中的吸附、降解行为受生物炭施用量与性质的显著影响.施用质量分数为2%时，对抗生素吸附行为的影响最强，效应值为0.19;施用质量分数为5%时，对其降解作用影响显著，效应值为0.23;生物炭比表面积、极性、稳定性和芳香化程度对分配系数的增加影响非常显著，分别为0.11、0.13、0.09和0.18;而生物炭施用量和性质对抗生素迁移行为影响并不显著.生物炭还可通过调控土壤环境间接影响抗生素环境行为.但抗生素在土壤中多环境行为耦合对生物炭的响应机制仍不明确，生物炭田间施用的长效性与负面效应仍缺乏基础数据支撑.

Effects of Biochar on Antibiotic Environmental Behaviors in Soil: A Meta-analysis

Biochar, as a soil amendment for synergizing the reduction of pollution and carbon emissions, shows great potential and future prospects in controlling antibiotic contamination. In order to research the effects of biochar on antibiotic behaviors in soil systematically, a Meta-analysis was conducted based on 20 studies published from 2011 to 2021. The results showed that the adsorption and degradation of antibiotics in the soil were significantly affected by the application rate and property of biochar. A 2% biochar application dose seemed to be the highest effect size (ES) of 0.19 on adsorption, while there was a significant effect (ES=0.23) on the degradation when the application rate was 5%. The specific surface area, polarity, stability, and aromaticity of biochar could increase the partition coefficient significantly, and the ES was 0.11, 0.13, 0.09, and 0.18, respectively, whereas the effects of antibiotic transport on the dose and property of biochar were insignificant. Biochar also indirectly controlled antibiotic behavior by altering the soil environment. However, the response of the coupling mechanism in antibiotic behaviors on biochar application into soil is still unclear. Moreover, the long-term and negative effects of biochar application in the field are still lacking basic data.