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Increasing atmospheric deposition nitrogen and ammonium reduced microbial activity and changed the bacterial community composition of red paddy soil

  • Fengwu Zhou
  • , Jian Cui
  • , Jing Zhou
  • , John Yang
  • , Yong Li
  • , Qiangmei Leng
  • , Yangqing Wang
  • , Dongyi He
  • , Liyan Song
  • , Min Gao
  • , Jun Zeng
  • , Andy Chan

Research output: Contribution to journalArticlepeer-review

Abstract

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
Original languageEnglish
Pages (from-to)776-784
Number of pages9
JournalScience of the Total Environment
Volume633
DOIs
Publication statusPublished - 28 Mar 2018
Externally publishedYes

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