| 吴一铭,Tatiana Minkina,高彦征.固定化菌剂对PAEs污染土壤生物修复和碳组分的影响[J].农业环境科学学报,2026,45(9):2263-2271. |
| 固定化菌剂对PAEs污染土壤生物修复和碳组分的影响 |
| Impacts of immobilized microbial inoculant on bioremediation and carbon fractions in plasticizercontaminated soil |
| 投稿时间：2025-10-20 |
| DOI：10.11654/jaes.2025-0945 |
| 中文关键词: 固定化菌剂 塑化剂消减 代谢酶活性 碳组分 生物修复 |
| 英文关键词: immobilized microbial agent plasticizer attenuation metabolic enzyme activity carbon fraction bioremediation |
| 基金项目:国家重点研发计划项目（2023YFE0110800）；国家自然科学基金项目（42430703，U22A20590） |
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| 中文摘要: |
| 本文以黄棕壤（江苏南京栖霞）试验田土壤为研究对象，通过温室盆栽试验研究了固定化菌剂对污染土壤和蔬菜中邻苯二甲酸酯（Phthalic acid ester，PAEs）的消减作用及对土壤碳组分的影响。结果显示：添加小麦秸秆生物炭固定化菌剂（XM）后，土壤中6种塑化剂的去除率显著提高，总去除率可达88.35%，生菜中塑化剂含量也比未添加菌剂的对照组（CK）下降66.07%。土壤中可脱附态PAEs的比例降低，结合态比例升高。在酶活性方面，土壤中过氧化氢酶（CAT）、过氧化物酶（POD）、多酚氧化酶（PPO）的活性随着培养时间增加而逐渐提高。同时，添加固定化菌剂使农田土壤中总碳（TC）、有机碳（SOC）、易氧化有机碳（EOC）、颗粒态有机碳（POC）、可溶性有机碳（DOC）和微生物生物量碳（MBC）含量增加。研究表明，添加固定化菌剂可以提高土壤抗氧化酶活性，并改变污染物存在形态，使其生物可利用性降低，从而降低了土壤和蔬菜中PAEs含量，具有良好的生物修复效果。在污染物消减的同时，固定化菌剂的添加还提高了多种土壤碳组分指标，有利于农田土壤质量提升。 |
| 英文摘要: |
| Using yellow-brown soil collected from an experimental field in Qixia, Nanjing（Jiangsu, China）, a greenhouse pot experiment was conducted to evaluate the performance of a biochar-immobilized inoculant in attenuating phthalic acid esters（PAEs）in contaminated soil and lettuce, and to quantify its impact on soil carbon fractions. Results showed that amendment with the wheat-straw-biocharimmobilized inoculant significantly enhanced the removal of six target PAEs, achieving a total removal efficiency of 88.35%. PAEs concentrations in lettuce decreased by 66.07% compared to the control group（CK）without microbial inoculation. The desorbable PAEs fraction declined while the bound fraction increased, and the activities of catalase（CAT）, peroxidase（POD）and polyphenol oxidase（PPO） rose progressively with incubation time. Simultaneously, the inoculant increased total carbon（TC）, soil organic carbon（SOC）, easily oxidizable carbon（EOC）, particulate organic carbon（POC）, dissolved organic carbon（DOC）and microbial biomass carbon（MBC）in the arable soil. Overall, the immobilized inoculant elevated antioxidant enzyme activities, shifted PAEs towards less bioavailable forms, and effectively lowered PAEs levels in both soil and lettuce, demonstrating strong bioremediation potential. Concurrent pollutant attenuation was accompanied by significant improvements in multiple carbon-fraction indices, indicating that the technology enhances soil quality in PAE-contaminated farmland. |
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