| 运城盐湖湿地土壤微生物多样性及其对重金属的响应 |
| 摘要点击 289 全文点击 17 投稿时间：2024-05-16 修订日期：2024-06-26 |
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| 中文关键词 湿地土壤 微生物 生态功能 重金属胁迫 环境适应 |
| 英文关键词 wetland soil microorganisms ecological function heavy metal stress environmental response |
| 作者 | 单位 | E-mail | | 李元 | 山西大学环境与资源学院, 山西省黄河实验室, 太原 030006
山西大学环境科学研究所, 太原 030006 | 61504255@qq.com | | 杨海鑫 | 山西大学环境与资源学院, 山西省黄河实验室, 太原 030006 | | | 喻其林 | 南开大学生命科学学院, 天津 300071 | | | 郭东罡 | 山西大学环境与资源学院, 山西省黄河实验室, 太原 030006 | | | 张全喜 | 山西大学环境与资源学院, 山西省黄河实验室, 太原 030006
山西大学环境科学研究所, 太原 030006 | qxzhang@sxu.edu.cn |
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| 中文摘要 |
| 为探究运城盐湖湿地土壤微生物群落的分布特征及其影响因素,以研究区不同区域土壤为研究对象,采用高通量测序和生物信息学分析技术揭示该地区土壤微生物群落多样性和结构特征,同时评估了微生物群落与土壤中重金属元素含量之间的潜在关联,旨在为当地的环境保护与生态恢复提供科学指导.结果表明,运城盐湖湿地土壤重金属含量空间差异大,南岸重金属Pb和Cr的含量以及总量显著大于其他区域.南岸土壤优势细菌酸杆菌门和厚壁菌门及优势生态功能硝酸盐还原均与其他区域有显著差异.优势真菌门不具有显著空间差异性,而优势真菌生态功能动物病原-粪腐生-内生-附生-植物腐生-木腐生菌显著大于其他区域.研究区细菌群落在多样性和丰富度上均大于真菌且构建过程以确定性为主,真菌群落构建仍表现为随机性为主.驱动该区域土壤细菌群落结构变化的重金属依次为Cr、Hg、Zn、As和Ni,多种重金属与变形菌门和酸杆菌门显著相关.驱动真菌群落结构变化的重金属依次为Cr、As、Zn、Pb和Hg,其中As与担子菌门显著负相关. |
| 英文摘要 |
| The distribution characteristics and influencing factors of soil microbial communities in the Yuncheng Salt Lake wetland were investigated by analyzing soil samples from different regions using high-throughput sequencing and bioinformatics analysis techniques. The diversity and structural characteristics of soil microbial communities in the region were revealed, and the potential correlations between microbial communities and heavy metal elements in the soil were assessed. This study aims to provide scientific guidance for local environmental protection and ecological restoration. The results showed significant spatial differences in heavy metal content in Yuncheng Salt Lake wetland soil, with higher total heavy metal content and Pb and Cr content on the southern shore compared to those in other regions. The dominant bacteria in southern shore soil, Acidobacteria and Firmicutes, as well as the dominant ecological function, nitrate reduction, differed significantly from those in other regions. The dominant fungal phylum did not show significant spatial differences； however, the dominant ecological function, animal pathogens - coprophilous - endophytic - epiphytic - saprophytic - ligninolytic fungi, was significantly higher than in other regions. The diversity and richness of bacterial communities in the study area were higher than those of fungi, and the construction process was primarily deterministic, whereas fungal community construction was predominantly stochastic. Heavy metals driving changes in soil bacterial community structure in this region were Cr, Hg, Zn, As, and Ni, with various heavy metals significantly correlated with Actinobacteria and Acidobacteria. The heavy metals driving changes in fungal community structure were Cr, As, Zn, Pb, and Hg, with As significantly negatively correlating with Basidiomycota. |
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