Journal article
Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea
Q Wang, LM Zhang, JP Shen, S Du, LL Han, JZ He
Environmental Science and Pollution Research | SPRINGER HEIDELBERG | Published : 2016
Abstract
Ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) are crucial for N2O emission as they carry out the key step of nitrification. Dicyandiamide (DCD) and acetylene (C2H2) are typical nitrification inhibitors (NIs), while the comparative effects of these NIs on N2O production and ammonia oxidizers’ (AOB and AOA) growth are unclear. Four treatments including a control, urea, urea + DCD, and urea + C2H2 were set up to investigate their effect of inhibiting soil nitrification, nitrification-related N2O emission as well as the growth of ammonia oxidizers with a fluvo-aquic soil using microcosms for 28 days. N2O emission and net nitrification rate increased after the application o..
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Awarded by University of Melbourne
Funding Acknowledgements
This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB15020200) and by the Natural Science Foundation of China (41322007 and 41371265). We appreciate the English improvements from Dr. Moniruzzaman Khan Eusufzai and Dr. PM Chalk (from the University of Melbourne).