Effects of simulated nitrogen deposition on soil microbial community diversity in coastal wetland of the Yellow River Delta
نویسندگان
چکیده
Due to the enhancement of human activities on global scale, total amount atmospheric nitrogen (N) deposition and rate keep increasing, which seriously affect structure function terrestrial ecosystems. In order study effects N soil coastal saline wetlands, we established a long-term simulation platform in 2012 Yellow River delta (YRD). Herein, analyzed composition diversity microbial community under different treatments (LNN, MNN HNN, stand for 50 kg ha?1 yr?1, 100 200 yr?1) water-only control (CK). The results showed that with increasing level deposition, ?-diversity (Shannon Simpson indices) decreased significantly, changed. At phylum level, compared CK, relative abundance Chloroflexi increased significantly treatment HNN (P = 0.002), but Chlorobi 0.013) Verrucomicrobia 0.035) significantly. genus Bacillus 0.01) Halomonas 0.042) treatment. Nitrococcus significant correlation NH4+-N. suggest response microorganisms varied by concentration, high concentration would increase nutrients soil, reduce microorganisms, causing negative impact wetland ecosystem YRD.
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ژورنال
عنوان ژورنال: Science of The Total Environment
سال: 2021
ISSN: ['0048-9697', '1879-1026']
DOI: https://doi.org/10.1016/j.scitotenv.2020.143825