2020
DOI: 10.3390/w12123459
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Depression of Groundwater Table and Reduced Nitrogen Application Jointly Regulate the Bacterial Composition of nirS-Type and nirK-Type Genes in Agricultural Soil

Abstract: Despite the known influence of nitrogen fertilization and groundwater conditions on soil microbial communities, the effects of their interactions on bacterial composition of denitrifier communities have been rarely quantified. Therefore, a large lysimeter experiment was conducted to examine how and to what extent groundwater table changes and reduced nitrogen application would influence the bacterial composition of nirK-type and nirS-type genes. The bacterial composition of nirK-type and nirS-type genes were c… Show more

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Cited by 4 publications
(14 citation statements)
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“…Nitrogen is one of the most important limiting factors for the growth of soil microbes ( Sun et al, 2015 ; Hou et al, 2018 ; Zhang et al, 2022 ). Nitrogen fertilizers can not only directly affect soil microbial communities but also indirectly affect soil microbial communities by regulating soil fertility, soil salt content and groundwater salt content ( She et al, 2018 ; Bai et al, 2020 ; Wu et al, 2020 ; Bai et al, 2023 ). However, over-application of nitrogen fertilizers may result in a series of severe environmental problems, including soil salinization, nitrate contamination and groundwater pollution ( Zhang et al, 2013 ; Lasagna et al, 2016 ).…”
Section: Introductionmentioning
confidence: 99%
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“…Nitrogen is one of the most important limiting factors for the growth of soil microbes ( Sun et al, 2015 ; Hou et al, 2018 ; Zhang et al, 2022 ). Nitrogen fertilizers can not only directly affect soil microbial communities but also indirectly affect soil microbial communities by regulating soil fertility, soil salt content and groundwater salt content ( She et al, 2018 ; Bai et al, 2020 ; Wu et al, 2020 ; Bai et al, 2023 ). However, over-application of nitrogen fertilizers may result in a series of severe environmental problems, including soil salinization, nitrate contamination and groundwater pollution ( Zhang et al, 2013 ; Lasagna et al, 2016 ).…”
Section: Introductionmentioning
confidence: 99%
“…In the past decades, its groundwater consumption increased sharply because of population growth, urbanization and development of industry and agriculture ( Changming et al, 2001 ; Chen et al, 2020 ; Jing et al, 2023 ; Xiao et al, 2023 ), causing various environmental geologic problems, including groundwater table fall, water quality worsening and surface subsidence ( Changming et al, 2001 ; Shi et al, 2020 ; Gan et al, 2022 ). Notably, groundwater table can regulate soil microbial species richness and composition ( Bai et al, 2020 ; Wu et al, 2020 ; Zhang et al, 2020 ). Besides, groundwater depth change can indirectly influence soil microbial communities by altering soil attributes such as salinity, pH and nutrients ( Bai et al, 2020 ; Zhang et al, 2020 ).…”
Section: Introductionmentioning
confidence: 99%
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