Gómez Rey, M.X. and Couto Vázquez, A. and García Marco, Sonia and González Prieto, S.J.
Impact of fire and post-fire management techniques on soil chemical properties.
"Geoderma", v. 195-19
The effects of
burned soil) and two emergency stabilisation techniques (grass
) on 20 chemical characteristics were evaluated on 0
5 cm top-soils sampled 1, 90, 180 and
365 days after an experimental
re in a steep shrubland of a temperate-humid region (NW Spain). Most
part of pH (in H
O and KCl) variance was explained by the sampling date. No clear temporal trends were
able for total soil C and N content, likely due to the large SOM pool in these soils; however, changes
C were explained by the deposition of
C-depleted ashes, followed by its progressive erosion,
while those on soil
N were a consequence of
re induced N outputs. After the
N, P, Na, K, Mg,
Ca, Mn, Cu, Zn and B concentrations increased, while those of NO
N, Al, Fe and Co did not vary significantly.
Despite a significant decline with time, concentrations of Mg, Ca and Mn at the end of the study were still
higher than in unburned soil, while those of K, Cu, Zn and B were similar to the pre-fire levels and those of
N, P and Na were below pre-fire values.
treatments for burned soil emergency
stabilisation had significant effects on soil
N and extractable K, Mg and Ca, while data were inconclusive
for their possible effects on the extractable Al, Fe and Co