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首页> 外文期刊>Ecotoxicology and Environmental Safety >Study on the influence of soil microbial community on the long-term heavy metal pollution of different land use types and depth layers in mine
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Study on the influence of soil microbial community on the long-term heavy metal pollution of different land use types and depth layers in mine

机译：土壤微生物群落对矿山不同土地利用类型和深度层的长期重金属污染的影响研究

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To understand the importance of the response of soil microbial communities to the stress of heavy metals around mining areas by assessing the feedback of soil ecosystems in different soil habitats, this article selected different land use types (Mining area, Dressing area, Heap mine area, Tailings area and Vegetable field) and surface soil samples of different depths (0-10 cm, 10-20 cm, 20-30 cm) as the variables related to the mining activities in the Shizishan mining area in Tongling, Anhui Province, China. Soil physicochemical properties and heavy metal concentrations of the different land use types and soil depths were compared. Illumina MiSeq. 2500 Sequencing Technology was used to analyze the abundance and structural diversity of the microbial community in soil samples. The relationship between mine soil pollution characteristics and microbial community were investigated. The results showed that soil physicochemical properties and heavy metals significantly affected the microbial community. The microbial community structure was significantly variable in vertical soil depth-layer habitats. The relative abundance (1%) of the soil microbial community at the phylum level was represented by a total of 14 phyla, where the two most dominant phyla were Proteobacteria (41.71%) and Firmicutes (20.44%). The two bacteria were positively related with Cu, Zn, Pb, and pH but negatively associated with soil organic matter (SOM), available potassium (AK), and moisture content (MC). Therefore, Proteobacteria and Firmicutes were highly resistant to heavy metals. These results increased our understanding of microbial variation and assembly pattern under different land use types in heavy metals contaminated mining soils.
机译：为了通过评估不同土壤生境中土壤生态系统的反馈，了解采矿区周围土壤微生物群落对重金属胁迫的重要性，本文选择了不同的土地利用类型（采矿区，更衣区，堆矿区，尾矿区和菜田）和不同深度（0-10 cm，10-20 cm，20-30 cm）的表层土壤样品是与中国安徽省铜陵市狮子山矿区采矿活动有关的变量。比较了不同土地利用类型和土壤深度的土壤理化性质和重金属含量。 Illumina MiSeq。 2500测序技术用于分析土壤样品中微生物群落的丰度和结构多样性。研究了矿山土壤污染特征与微生物群落之间的关系。结果表明，土壤理化性质和重金属对微生物群落有显着影响。垂直土壤深层生境中的微生物群落结构显着变化。在菌群水平上，土壤微生物群落的相对丰度（1％）由总共14个菌群代表，其中两个最主要的菌群是Proteobacteria（41.71％）和Fimicutes（20.44％）。这两种细菌与Cu，Zn，Pb和pH呈正相关，但与土壤有机质（SOM），有效钾（AK）和水分（MC）呈负相关。因此，Proteobacteria和Firmicutes对重金属具有高度抗性。这些结果增加了我们对重金属污染的采矿土壤中不同土地利用类型下微生物变异和组装模式的理解。

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