Effect of fire on some physical and chemical properties of soil in Guilan province forests (case study: Saravan)

Document Type : Research

Authors

Department of Forestry Natural Resources Engineering, Faculty of Natural Resources, Gilan University

Abstract

Many of physical and chemical properties of soil change under the influence of fire. Fire can affect the soil elements and forest soil. This study reviews effects of fire on soil physical and chemical properties in Saravan forest of Guilan Province of Iran. Three 50-hectares sites were selected with similar physiographic conditions and vegetation cover (Taeda pine plantation). In a 10-year period (1379-1389) Fire had occurred seven times in Kashal Varzal area and three rimes in Mushangah area. Kacha area was considered as a control area that had no fire. Fire was recorded based on forms of Department of Natural Resources in Guilan as fire surface. Data measured using systematic sampling with dimensions network 100*200 meter. 25 plots in each area were determined. In each plot, three samples of soil taken from depth of 0-30 cm and one combined sample transferred to the laboratory. Results research showed the fire had effect significantly on nitrogen, acidity, phosphor, potassium, organic carbon, sand, silt and moisture content saturated and no effect significant on the electrical conductivity, CO2 and clay has. Also fire increases the acidity, phosphor, potassium, sand and reduces organic carbon, nitrogen, silt, clay, CO2 and saturated moisture content.

Keywords

Watershed Management Research
Volume 27, Issue 3 - Serial Number 104
September 2014
Pages 96-106

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History

  • Receive Date: 21 December 2012
  • Revise Date: 02 February 2014
  • Accept Date: 20 April 2014

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