Chinese Journal of Agrometeorology ›› 2015, Vol. 36 ›› Issue (06): 709-716.doi: 10.3969/j.issn.1000-6362.2015.06.007

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Effects of Biochar on the Key Soil Nitrogen Transformation Processes in Agricultural Soil

ZHANG Xing, ZHANG Qing-wen, LIU Xing-ren, XU Ying-chun,REN Jian-qiang   

  1. 1. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/ Key Laboratory of Agricultural Environment, Ministry of Agriculture, Beijing 100081, China; 2. Hebei Agriculture Broadcasting and Television School, Shijiazhuang 050021; 3. Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081
  • Received:2015-01-05 Online:2015-12-20 Published:2015-12-17

Abstract: Biochar, as an unique soil amendment, can effectively improve soil structure, improve the ability of absorbing nutrients, reduce greenhouse gas emissions and increase biological nitrogen fixation. Therefore, it has great prospects in agriculture production and mitigating climate change. Biochar input will directly affect the agricultural soil nitrogen cycle and transformation, so this review focuses on the effects of biochar on soil nitrogen transformation processes such as nitrogen mineralization, nitrification, denitrification, the relevant nitrogen loss, and biological nitrogen fixation processes and relevant mechanisms. Based on the review on published literature, we proposed that the future research should strengthen the mechanism nitrogen transformation and the long-term positive or negative effects of biochar on environment, to carry out research on related microbial community diversity, abundance and activity in terms of soil, as well as biochar studies should be based on a unified standard to clearly distinguish the effect of different biochar and its mechanism.

Key words: Biochar, Nitrogen transformation, Nitrogen loss, Nitrification rate, N2O gas