Research on the effects of rare earth combined contamination on soil microbial diversity and enzyme activity

• Autorzy: Jiang Ying , Wang Xuemei , Chen Yunzhu , Nengzi Lichao

Identyfikatory

DOI

10.2478/eces-2022-0017

• Języki publikacji: EN

Abstrakty

EN

Soil microorganisms and soil enzyme activities are important indexes to evaluate soil status. The soil pollution status was evaluated by measuring the physical and chemical properties and heavy metal content of rare earth combined contaminated soil around the Maoniuping old mining area and tailings ponds in different seasons, and measuring the number and diversity of microorganisms and the soil enzyme activities of the arable soil microecology. This research shows that the physical and chemical properties of farmland soil in old mining areas and tailings ponds in different seasons are significantly different, the concentration of rare earth combined contamination in old mines is greater than that in the tailings area, and the changes in the concentration of rare earth combined contamination cause significant changes in soil microecology. Rare earth combined contamination inhibits fungal and bacterial vital activities and promotes the growth of actinomycetes; reduces the sensitivity of sucrase to heavy metal contamination, promotes the activity of phosphatase, and the effect on urease is that of “promotion at low concentration and inhibition at high concentration”; and reduces the community’s ability to use carbon sources and, as a result, the community species are rare and distributed unevenly and the community structure is simple. These results indicate that rare earth combined contamination is potentially harmful to soil microorganisms, which can provide a theoretical basis for the ecological restoration of farmland soil in mining areas.

Słowa kluczowe

EN

rare earth combined contamination; soil enzyme activity; microbial diversity

PL

zanieczyszczenia; aktywność enzymatyczna gleby; różnorodność mikrobiologiczna

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Ecological Chemistry and Engineering. S
• Rocznik: 2022
• Tom: Vol. 29, nr 2
• Strony: 227--236
• Opis fizyczny: Bibliogr. 16 poz., tab., wykr.

Twórcy

autor

Jiang Ying

• School of Resource and Environment, Xichang University, Xichang, 615000, China

• https://orcid.org/0000-0003-1167-5495

autor

Wang Xuemei

• School of Resource and Environment, Xichang University, Xichang, 615000, China

• https://orcid.org/0000-0003-4574-8090

autor

Chen Yunzhu

• School of Resource and Environment, Xichang University, Xichang, 615000, China

autor

Nengzi Lichao

• School of Resource and Environment, Xichang University, Xichang, 615000, China

• https://orcid.org/0000-0001-6322-8000

Bibliografia

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