Effects of nitrogen deposition on soil microbes

doi:10.3969/j.issn.1000-2006.2015.03.027

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (03): 149-155.doi: 10.3969/j.issn.1000-2006.2015.03.027

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Effects of nitrogen deposition on soil microbes

ZHAO Chao^1,2, PENG Sai^1,2, RUAN Honghua^1,2*, ZHANG Yakun^1,2

1.Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China;
2.College of Biology and the Enviroments, Nanjing Forestry University, Nanjing 210037, China

Online:2015-05-30 Published:2015-05-30

Abstract

Abstract: Increased nitrogen deposition may impact on soil microbes which play an important role in ecosystems. We reviewed the effects of nitrogen deposition on soil microbes in respect of soil microbial biomass, microbial structure and diversity, microbial activity, functional genes, and substrate utilization. In general, the potential effects of nitrogen deposition included the following aspects: ① Decreased soil microbial, fungal and the ratio of fungal to bacterial biomass; ② Led to a reduction of the productivity of ectomycorrhizal fungal fruit body and the arbuscular mycorrhiza abundance; ③ Altered the structure of arbuscular mycorrhizal fungal community, but there were still some debates on the effects on arbuscular mycorrhizal fungal diversity and saprophytic fungi; ④ The bacterial community structure changed. Oligotrophic bacterial abundance decreased, while copiotrophic bacterial abundance increased; ⑤ Soil microbial activity, some functional genes abundance and the catabolic capabilities of complex organic carbon and nitrogen decreased. Moreover, nitrogen deposition have been shown to affect microbes direct or through decreasing soil pH, making microbes carbon-limited, changing the quantity and quality of litter indirectly.

CLC Number:

S718.5

ZHAO Chao, PENG Sai, RUAN Honghua, ZHANG Yakun. Effects of nitrogen deposition on soil microbes[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2015, 39(03): 149-155.

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