维普中文期刊产品整合服务

Impact of anthropogenic activities on the sediment microbial communities of Baiyangdian shallow lake

查看全文 作　　者：Wenjun [1]Wang;Yujun [1,2]Yi;Yufeng [1]Yang;Yang [1]Zhou;Shanghong [3]Zhang;Xuan [1]Wang;Zhifeng [1]Yang 高影响力作者 机构地区：[1]State Key Laboratory of Water Environmental Simulation,School of Environment,Beijing Normal University,Beijing,100875,China;[2]Ministry of Education Key Laboratory of Water and Sediment Science,School of Environment,Beijing Normal University,Beijing 100875,China;[3]Renewable Energy School,North China Electric Power University,Beijing 102206,China高影响力机构 出　　处：《International Journal of Sediment Research》索引2020年第35卷第2期,共13页高影响力期刊 基　　金：This study is supported by the National Natural Science Foundation of China(51439001,51722901);the National Key R&D Program of China(2018YFC0407403);the Fundamental Research Funds for the Central Universities;the Interdiscipline Research Funds of Beijing Normal University。 摘　　要：Microorganisms are recognized as sensors of external disturbance in freshwater ecosystems.In this study,sediment samples from regions with strong human activity interference(four sites),moderate human activity interference(five sites)and minor human activity interference(five sites)in Baiyangdian Lake were collected;and their physiological and chemical properties and heavy metals contents were analyzed.The structures of bacterial and fungal communities were tested using 16S ribosomal Ribonucleic Acid(rRNA)and Internal Transcribed Spacer 2(ITS2)high-throughput sequencing technologies.The results indicated that Proteobacteria was the most abundant bacterial phylum.Ascomycota,Basidiomycota and Ciliophora were the dominant phyla of fungi.Obvious differences of microbial genera among the three regions were observed,especially fungal genera.With intensified disturbance by human activities,the Simpson and Shannon indices of bacteria significantly decreased.The fungal communities were clustered into three groups in accordance with the different human disturbance levels.The bacterial communities of sediment samples under moderate and minor human disturbance appeared similar,but different from those under strong human disturbance.Redundancy analysis indicated that zinc,total phosphorus,copper,and lead were the dominant factors that influenced the bacterial community.Nitrifiers and sulfate-reducing bacteria were influenced by pH,nitrate(NO3 ),and total nitrogen.The fungal community was significantly affected by total phosphorus.This study reveals that sediment microbial community structures among different regions of a shallow lake are mainly impacted by human activities. 关 键 词：BACTERIAL COMMUNITY FUNGAL COMMUNITY Human activity INTERFERENCE Environmental factors
相关文献

参考文献(65)

引证文献(21)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费