Nitric Acid Rain Decreases Soil Bacterial Diversity and Alters Bacterial Community Structure in Farmland Soils

被引:5
作者
Chen, Xuan [1 ]
Wang, Yiming [1 ]
Wei, Hui [1 ,2 ,3 ]
Zhang, Jiaen [1 ,2 ,3 ]
机构
[1] South China Agr Univ, Coll Nat Resources & Environm, Guangdong Lab Lingnan Modern Agr, Guangzhou 510642, Peoples R China
[2] Guangdong Engn Res Ctr Modern Ecoagr & Circular Ag, Guangzhou 510642, Peoples R China
[3] Minist Agr & Rural Affairs, Key Lab Agroenvironm Trop, Guangzhou 510642, Peoples R China
来源
AGRONOMY-BASEL | 2024年 / 14卷 / 05期
基金
中国国家自然科学基金;
关键词
nitric acid rain; bacterial community composition; bacterial community structure; microbial diversity; NITROGEN; FOREST; MICROORGANISMS; RESPIRATION; DEPOSITION; EMISSION; IMPACT; GROWTH;
D O I
10.3390/agronomy14050971
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Being regarded as one of the environmental problems endangering biodiversity and ecosystem health, acid rain has attracted wide attention. Here, we studied the effects of nitric acid rain (NAR) on the structure and diversity of microbial communities in agricultural soils by laboratory incubation experiments and greenhouse experiments. Our results indicated that NAR had an inhibitory effect on soil microorganisms, showing a significant reduction in the Chao1 index and Shannon index of soil bacteria. Proteobacteria, Acidobacteriota, Actinobacteriota, and Chloroflexi were the dominant bacterial phyla under NAR stress in this study. NAR significantly reduced the relative abundance of Proteobacteria and Actinobacteria, but significantly increased the relative abundance of Acidobacteriota and Chloroflexi, suggesting that NAR was unfavorable to the survival of Proteobacteria, and Actinobacteria. It is worth noting that the inhibitory or promoting effect of NAR on the dominant bacterial phyla gradually increased with increasing NAR acidity and treatment time. In addition, the study observed that the change in soil pH caused by NAR was the main reason for the change in soil bacterial community structure. In summary, the effects of NAR on soil microorganisms cannot be underestimated from the perspective of sustainable agricultural development.
引用
收藏
页数:15
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