期刊
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
卷 185, 期 2, 页码 202-208出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jpln.202100273
关键词
denitrification; helium gas flow soil core technique; microbial biomass; mineral nitrogen; soil temperature; water-filled pore space
资金
- Hochschuljubilaumsstiftung der Stadt Wien [H-294894/2014]
N-2 fluxes were significantly higher in soil treated with biochar, especially under higher soil moisture and lower temperature conditions. The biochar-treated soil had higher concentrations of organic carbon and nitrate.
Four years after a single biochar (BC) application of 72 t ha(-1), significantly higher N-2 fluxes were measured from BC-treated soil using the helium gas flow soil core method compared with the control. Nitrous oxide was below the detection limit. Soil moisture and temperature significantly affected N-2 fluxes, which were highest at 70% water-filled pore space and 5 degrees C. The BC-treated soil was characterized by higher organic C and NO3-N concentrations and a wider C/N ratio of the microbial biomass.
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