孔德康;王红旗;刘自力;许洁;熊樱;

• 1:北京师范大学水科学研究院
• 2:北京京诚嘉宇环境科技有限公司

摘要(Abstract)：

石油烃作为一类持久性难降解有机污染物对土壤环境质量产生严重的危害。以天津大港油田原油污染土壤中筛选出的耐低温高效石油烃降解菌为靶细胞,以小麦、紫花苜蓿作为供试植物,利用盆栽试验,对植物-外源菌协同修复体系中的脱氢酶活性和土壤微生物多样性进行研究,分析其变化及其与石油烃降解率的关系。结果表明植物-微生物协同修复对石油烃具有较好的降解能力,其中小麦-固定化外源菌组具有最高的降解率,石油烃含量从最初的30 600 mg獉kg-1下降为24 300 mg獉kg-1,降解率为20.6%,并且其试验后期石油烃的降解率最大,远远高于其他时期,表现出良好的修复潜力。外源菌投加的初始阶段会迅速提高脱氢酶活性,然而这种影响随着降解时间延长而逐渐减弱。初期脱氢酶活性与总石油烃的降解存在较好的相关性,脱氢酶活性可以在一定程度上表征土壤石油烃的降解情况。微生物多样性与总石油烃降解也存在一定的相关性。

关键词(KeyWords)： 石油烃;植物-外源菌协同修复;脱氢酶活性;微生物多样性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金“包气带微生物跨膜运输多环芳烃的动态过程及膜蛋白功能调控研究”(41772234);国家自然科学基金“包气带微生物对多环芳烃的跨膜运输及膜蛋白传输方式的研究”(41372232)

作者(Author): 孔德康;王红旗;刘自力;许洁;熊樱;

Email:

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