Volume 51, Number 3, Juillet-Septembre 2016
|Page(s)||207 - 212|
|Published online||14 September 2016|
Effects of uranium on soil microbial biomass carbon, enzymes, plant biomass and microbial diversity in yellow soils
1 Southwest University of Science and Technology Mianyang,
Sichuan 621000, P.R. China.
2 College of Chemistry and Chemical Engineering, Qiqihar University, Heilongjiang 161006, P.R. China.
3 Fisheries environmental monitoring station, Qiqihar, Heilongjiang 161006, P.R. China.
Accepted: 14 June 2016
We conducted an experiment to investigate the effects of uranium (U) on soil microbial biomass carbon (MBC), enzymes, plant biomass and microbial diversity in yellow soils under three concentrations: 0 mg kg-1 (T1, control), 30 mg kg-1 (T2) and 60 mg kg-1 (T3). Under each treatment, elevated U did not reduce soil MBC or plant biomass, but inhibited the activity of the soil enzymes urease (UR), dehydrogenase (DH) and phosphatase (PHO). The microbial diversity was different, with eight dominant phyla in T1 and six in T2 and T3. Furthermore, Proteobacteria and material X were both detected in each treatment site (T1, T2 and T3). Pseudomonas sp. was the dominant strain, followed by Acidiphilium sp. This initial study provided valuable data for further research toward a better understanding of U contamination in yellow soils in China.
Key words: uranium / soil enzymes / MBC / microbial diversity / yellow soils
© EDP Sciences 2016
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