Effect of simulated forest fire on the availability of N and P in mediterranean soils

P. Kutiel, A. Shaviv

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

The effect of soil burning on N and P availability and on mineralization and nitrification rates of N in the burned mineral soil was studied by combustion of soils in the laboratory. At a fire temperature of 600°C, there was a complete volatilization of NH4 and a significant increase of pH, from 7.6 in the unburned soil to 11.7 in the burned soil. Under such conditions ammonification and nitrification reactions were inhibited. Less available P was produced immediately after the fire at 600°C, as compared to P amount produced at 250°C. Burning the soils with plants caused a decrease in NH4-N and (NO2+NO3)-N concentrations in the soil as well as a reduction in ammonification and nitrification rates. Combustion of soil with plants contributed additional available P to the burned soil. The existence of a non-burned soil under the burned one played an important role in triggering ammonification and nitrification reactions.

Original languageEnglish
Pages (from-to)57-63
Number of pages7
JournalPlant and Soil
Volume120
Issue number1
DOIs
StatePublished - 1 Nov 1989
Externally publishedYes

Keywords

  • ammonification
  • calcareous soil
  • nitrification
  • soil combustion
  • soil nutrients

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