TY - JOUR
T1 - Increasing atmospheric deposition nitrogen and ammonium reduced microbial activity and changed the bacterial community composition of red paddy soil
AU - Zhou, Fengwu
AU - Cui, Jian
AU - Zhou, Jing
AU - Yang, John
AU - Li, Yong
AU - Leng, Qiangmei
AU - Wang, Yangqing
AU - He, Dongyi
AU - Song, Liyan
AU - Gao, Min
AU - Zeng, Jun
AU - Chan, Andy
PY - 2018/3/28
Y1 - 2018/3/28
N2 - Atmospheric deposition nitrogen (ADN) increases the N content in soil and subsequently impacts microbial activity of soil. However, the effects of ADN on paddy soil microbial activity have not been well characterized. In this study, we studied how red paddy soil microbial activity responses to different contents of ADN through a 10-months ADN simulation on well managed pot experiments. Results showed that all tested contents of ADN fluxes (27, 55, and 82kgNha−1 when its ratio of NH4+/NO3−-N (RN) was 2:1) enhanced the soil enzyme activity and microbial biomass carbon and nitrogen and 27kgNha−1 ADN had maximum effects while comparing with the fertilizer treatment. Generally, increasing of both ADN flux and RN (1:2, 1:1 and 2:1 with the ADN flux of 55kgNha−1) had similar reduced effects on microbial activity. Furthermore, both ADN flux and RN significantly reduced soil bacterial alpha diversity (p
AB - Atmospheric deposition nitrogen (ADN) increases the N content in soil and subsequently impacts microbial activity of soil. However, the effects of ADN on paddy soil microbial activity have not been well characterized. In this study, we studied how red paddy soil microbial activity responses to different contents of ADN through a 10-months ADN simulation on well managed pot experiments. Results showed that all tested contents of ADN fluxes (27, 55, and 82kgNha−1 when its ratio of NH4+/NO3−-N (RN) was 2:1) enhanced the soil enzyme activity and microbial biomass carbon and nitrogen and 27kgNha−1 ADN had maximum effects while comparing with the fertilizer treatment. Generally, increasing of both ADN flux and RN (1:2, 1:1 and 2:1 with the ADN flux of 55kgNha−1) had similar reduced effects on microbial activity. Furthermore, both ADN flux and RN significantly reduced soil bacterial alpha diversity (p
U2 - 10.1016/j.scitotenv.2018.03.217
DO - 10.1016/j.scitotenv.2018.03.217
M3 - Article
SN - 0048-9697
VL - 633
SP - 776
EP - 784
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -