Publication date: 1 November 2017
Source:Geoderma, Volume 305
Author(s): M. Fernández-Fernández, T. Rütting, S. González-Prieto
Little is known about the combined impacts of fire and straw mulching, a widely used post-fire emergency measure, on the soil nitrogen (N) cycle. Unburnt (US) and severely-burnt soils without (BS) and with straw mulching (BSM) were preincubated (3 and 64 +/NO3 −) ratio of burnt soils decreased with preincubation time from 21 to 1.3, consistent with a shift of the N cycle towards net nitrification. After 3SON ) and gross NH4 + immobilisation (INH4 ) in BS more than doubled compared to US, in the latter being MSON 4.82NH4 3.014 + oxidation) in all treatments was 0.41–0.523 − accumulated, increasing the potential for ecosystem N losses. In the short term, straw mulching slightly mitigates the effects of fire on the N cycle.
Source:Geoderma, Volume 305
Author(s): M. Fernández-Fernández, T. Rütting, S. González-Prieto