Abstract

This study was carried out to examine the recovery of forest ecosystem by changes of soil chemicalproperties and soil microorganism at the burned areas of conife rous (Mt. Chocdae) and broad leaved forest (Samsinbong in Mt. Chiri). In the soil chemical properties of t he burned area of Samsinbong, pH was 5.8, and contents of organic matter, total nitrogen, available P2O5, exchangeable K+, exchangeable Ca++and exchan geable Mg++were 7.42%, 0.73%, 28.5 mg/kg, 1.3 me/100g, 13.3 me/10g and 2 .2 me/100g, respectively. But they showed a tendency to decrease with time. In the soil chemical properties of the burned area of Mt. Chocdae, pH was 5.3, and contents of organic matter, total nitrogen, available P2O5, exchangeable K+, exchangeabe Ca++and Exchangeable Mg++were 6.42%, 0.25%, 24.4 mg/kg, 0.7 me/100g, 3.7 me/100g and 2. 1 me/100 g, respectively, and they also showed a tendency to decrease with time. In contrast, they were not changed with time at the unburned areas. At the burned area of Samsinbong, s oil microorganism showed to order of fungi (69