Investigation of Fire Effects on Physical and Chemical Characteristics of Soil in Golandaz Dehbekri Rangeland

Awareness of the effects of fire on various aspects of an ecosystem after the fire,is important for range management. Changes in soil physical and chemical propertiescaused by fire can be the cause of changes in the vegetation. In this study, effects of fire onphysical and chemical characteristics of soil were investigated. This research was carriedout in a randomized block design method in the Golandaz rangeland of Bam. The variablesin two treatment sites (with firing and without fire treatment) were organic carbon, nitrate,phosphor, potassium, EC, pH, percentage of sand, silt and clay, and soil structure. Theresults showed that absorbed potassium, silt, nitrate, organic carbon, EC, and pH areincreased in fired site comparing to control site. Other elements including clay content,absorbed potassium, phosphorus, EC, and pH in fire site were not significantly differentfrom control site.