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首页> 外文期刊>Applied Soil Ecology >Soil properties and heavy metal concentrations affect the composition and diversity of the diazotrophs communities associated with different land use types in a mining area
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Soil properties and heavy metal concentrations affect the composition and diversity of the diazotrophs communities associated with different land use types in a mining area

机译：土壤性质和重金属浓度影响与矿区不同土地利用类型相关的重氮化社区的组成和多样性

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摘要

Biological nitrogen fixed by diazotrophs is important because it is the largest natural source of nitrogen to support primary productivity and maintain ecosystem sustainability when anthropogenic nitrogen inputs are lacking, especially in mining areas. The present study selected six different land use types (a corn field, a vegetable field, an area of shrubs, a mine tailing, a forest and a citrus orchard) as variables related to the mining activities around the Siding mining area, Liuzhou, Guangxi Province, China. A 0-10 cm soil layer was sampled, and the heavy metal concentrations and soil physicochemical properties were measured. Illumina MiSeq sequencing technology was used to analyze the abundance and structural diversity of the diazotroph community. The distribution of diazotroph assemblages among the different land use types and the main soil environmental properties that drive diazotroph community compositions were determined. The results indicated that the phylum Cyanobacteria (85.89%) was the most dominant taxon in the diazotrophic community in the citrus orchard. However, in the soils of the five other land use types, Proteobacteria was the most dominant taxon in the diazotrophic community, with a high abundance that ranged from 60.08% to 99.96%. Spearman's correlation analysis and redundancy analysis results indicated that the soil organic matter (OM) content in the citrus orchard was significantly higher than that in other areas, and the difference in soil OM content might be the main reason for the difference in the diazotrophic communities. The diazotrophic communities and their associated diversity under different land use types were driven by soil heavy metal and soil N (including NH4+-N, NO3--N and total N (TN)) contents. Specifically, TN was highly correlated with the NMDS1 score of the soil diazotrophic community, which indicated that the soil TN content was the main reason for the high similarity among the diazotrophic communities in the corn field, vegetable field and shrub soils. Overall, our study offers a detailed description of the characteristics of the diazotroph community structure under different land use types around a mining area.
机译：二位素固定的生物氮是重要的，因为它是施用初级生产率的最大自然来源，并在缺乏人为氮投入时保持生态系统可持续性，特别是在采矿区。本研究选择了六种不同的土地使用类型（玉米田，蔬菜田，灌木，矿山尾矿，森林和柑橘园），与与普鲁州，广西柳州省矿业矿区周围的采矿活动有关的变量省，中国。取样0-10厘米的土壤层，测量重金属浓度和土壤物理化学性质。 Illumina MiSeq测序技术用于分析Diazotroph界的丰富和结构多样性。确定了不同土地利用类型的二位发生组合的分布和驱动重氮术群落组合物的主要土壤环境特征。结果表明，柑橘果园的虚拟营养群落（85.89％）是Cyanobacteria（85.89％）是最主要的分类。然而，在其他五种土地使用类型的土壤中，植物杆菌是真正营养群落中最占主导地位的分类，高丰富的高度范围从60.08％到99.96％。 Spearman的相关性分析和冗余分析结果表明，柑橘果园中的土壤有机物质（OM）含量明显高于其他地区的含量，土壤OM含量的差异可能是虚拟营养社区差异的主要原因。在不同土地使用类型和其相关的多样性在不同的土地使用过程中由土壤重金属和土壤N（包括NH 4 + -N，NO 3 - N和总N（TN））含量驱动。具体地，TN与土壤无缩风群落的NMDS1得分高度相关，这表明土壤TN含量是玉米田，蔬菜田和灌木土壤中重氮缺乏社区中高相似性的主要原因。总体而言，我们的研究详细描述了在采矿区周围不同土地使用类型下的Diazotroph界结构的特征。

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  • 来源
    《Applied Soil Ecology》 |2020年第1期|共9页
  • 作者

    Yu Fangming; Lin Jiamin; Xie Dongyu; Yao Yawei; Wang Xueru; Huang Yuanyuan; Xin Meifen; Yang Feifei; Liu Kehui; Li Yi;

  • 作者单位

    Guangxi Normal Univ Key Lab Ecol Rare &

    Endangered Species &

    Environm Minist Educ Guilin Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Coll Environm &

    Resources Guilin 541004 Peoples R China;

    Guangxi Normal Univ Key Lab Ecol Rare &

    Endangered Species &

    Environm Minist Educ Guilin Peoples R China;

    Guangxi Normal Univ Key Lab Ecol Rare &

    Endangered Species &

    Environm Minist Educ Guilin Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤生态学;
  • 关键词

    Diazotrophs; Mining area; Soil physicochemical properties; Illumina MiSeq sequencing;

    机译：重氮化;采矿区;土壤理疗性质;Illumina miseq测序;

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