紫外线照射时长变化对高原生境SBR反应器参与氮代谢的微生物群落和功能模块的影响  

The impact of durational UV radiation on functional modules and microbial communities involved in nitrogen metabolism in Plateau SBR reactors

作　　者：陈相宇 彭贤湃 李沛峰 纪家奥 王俊 傅椿慧 宗永臣 CHEN Xiangyu;PENG Xianpai;LI Peifeng;JI Jia’ao;WANG Jun;FU Chunhui;ZONG Yongchen(College of Water Conservancy and Civil Engineering,Xizang Agriculture and Animal Husbandry University,Linzhi 860000;Research Center of Civil,Hydraulic and Power Engineering of Xizang,Xizang Agriculture and Animal Husbandry University,Linzhi 860000)

机构地区：[1]西藏农牧学院水利土木工程学院,林芝860000 [2]西藏农牧学院西藏土木水利电力工程技术研究中心,林芝860000

出　　处：《环境科学学报》2024年第9期168-181,共14页Acta Scientiae Circumstantiae

基　　金：西藏自治区自然基金重点项目(No.XZ202301ZR0056G)。

摘　　要：本研究旨在探究随着紫外线照射时长的变化对高原生境下实验室规模SBR反应器参与氮代谢的微生物群落和代谢功能模块的影响,并进行微生物-环境因子关联分析,检测了微生物群落结构和6个氮代谢功能模块的变化.结果表明,紫外线照射时长的增加,造成了微生物群落的丰度有所降低,均匀性有所增强,并影响着微生物群落的演替方向.紫外线照射时长的增加显著抑制了异化硝酸盐还原、反硝化与完全硝化、氨氧化物3个功能模块,强化了固氮与硝化反应两个功能模块.各样本前50优势菌属中共有38个属与氮代谢6个功能模块相关,其中正相关达42.20%,负相关达57.80%.This study aimed to investigate the effects of UV irradiation duration on nitrogen metabolism microbial communities and metabolic functional modules in a laboratory-scale SBR reactor in an plateau habitat.In addition,microbe-environment factor correlation analyses were performed to detect changes in microbial community structure and six functional modules of nitrogen metabolism.The results showed that increasing the duration of UV exposure reduced the abundance,increased the homogeneity of the microbial community and influenced the direction of microbial community succession.Among the top 50 dominant genera in each sample,38 genera were correlated with the six functional modules of nitrogen metabolism,and the positive correlation of genera could reach 42.20%and the negative correlation could reach 57.80%.

关 键 词：紫外线照射 氮代谢 微生物群落结构 高原生境 SBR反应器 

分 类 号：X703[环境科学与工程—环境工程]