Pollutant accumulation and microbial community evolution in rain gardens with different drainage types at field scale.

Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE

Original Publication: London : Nature Publishing Group, copyright 2011-

Environmental Pollutants* ; Metals, Heavy* ; Microbiota*; Environmental Monitoring ; Gardens ; Rain ; Soil/chemistry

Rain gardens play a key role in urban non-point source pollution control. The drainage type affects the infiltration processes of runoff pollutants. The soil properties and microbial community structures were studied to reveal the stability of the ecosystem in rain gardens with different drainage types under long-term operation. The results showed that the soil water content and total organic carbon in the drained rain gardens were always higher than that of the infiltrated ones. With the increase in running time, the contents of heavy metals in rain gardens showed significant accumulation phenomena, especially the contents of Zn and Pb in drained rain gardens were higher than that in infiltrated ones. The accumulation of pollutants resulted in lower microbial diversity in drained rain gardens than in infiltrated rain gardens, but the microbial community structures were the same in all rain gardens. The effects of drainage type on microbial community evolution were not significant, only the accumulation of heavy metals led to changes in the abundance of dominant microorganisms. There were differences in the soil environment of rain gardens with different drainage types. The long-term operation of rain gardens led to fluctuations in the soil ecosystem, while the internal micro-ecosystems of the drained rain gardens were in unstable states.
(© 2024. The Author(s).)

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300102353505 Fundamental Research Funds for the Central Universities, CHD., Shaanxi Key Laboratory of Land Consolidation; 300102352504 Fundamental Research Funds for the Central Universities, CHD., Shaanxi Key Laboratory of Land Consolidation; DJNY2022-30 Scientific Research Item of Shaanxi Provincial Land Engineering Construction Group; 2023-JC-QN-0343 Natural Science Basic Research Program of Shaanxi

0 (Environmental Pollutants)
0 (Metals, Heavy)
0 (Soil)

Date Created: 20240116 Date Completed: 20240119 Latest Revision: 20240119

20240120

PMC10792081

10.1038/s41598-023-48255-6

38228664