2025年 01期

Influence of Sea(Salt) Water Invasion on Microbial Community Structure in Aquifer on the South Bank of Laizhou Bay

摘要(Abstract):

为了探究海(咸)水入侵对含水层微生物群落结构影响及微生物丰度与环境因素关系,在莱州湾南岸白浪河下游沿岸3眼监测井内,采集各含水层中地下水和沉积物样品;根据高通量测序结果,研究海(咸)水入侵对含水层微生物群落结构影响。结果表明:地下水中微生物丰富度和多样性均高于沉积物中的;随着海(咸)水入侵的加剧,地下水中微生物的丰富度和多样性降低,沉积物中微生物的丰富度和多样性则呈现波动变化并有升高的趋势;地下水中微生物以变形菌门、拟杆菌门为主,而沉积物中以变形菌门、放线菌门为主,在门以下微生物群落结构差异性较大,涅斯特连科氏菌属可作为识别海(咸)水入侵的标志微生物;地下水的Cl~-、 HCO~-_3含量和酸碱度对微生物群落结构影响显著,溶解性总固体、化学需氧量、全盐量对沉积物中微生物群落结构影响显著。

关键词(KeyWords): 海(咸)水入侵;地下水;微生物群落结构;莱州湾;

基金项目(Foundation): 国家自然科学基金项目(42202277);; 山东省自然科学基金项目(ZR2022QD024);; 山东省高等学校“青创科技计划”项目(2023KJ318);; 济南市“新高校20条”引进创新团队项目(2021GXRC070)

作者(Author): 陈宏帆,支传顺,胡晓农,黄宪瑞,陈耿

DOI: 10.13349/j.cnki.jdxbn.20240417.001

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