Soil Physicochemical Properties of Tree Plantations in a Fire-disturbed Forest and an Undisturbed Stand in Ulsan Metropolitan City

摘要

This study was carried out to compare soil physicochemical properties and nutrient concentrations of tree leaf between planted forests following forest fire and an undisturbed forest in the Bongdaesan mountain, where is located in the Ulsan metropolitan city. We established three deciduous tree planting (Liriodendron tulipifera L., Primus yedoensis Matsum and Quercus acutissima Carruth.) plots, one unplanted plot following four-year forest fire and one undisturbed plot (Pinus densiflora S et. Z). Carbon (C) stocks in the organic horizon were significantly lower in the tree planted plots (2394-3551 kg-Cha ') or the unplanted plots (3689 kg-C-ha~') than in the undisturbed plot (9388 kg-C-ha '). However, phosphorus (P), potassium (K) and magnesium (Mg)stocks in the organic horizon were not significantly different among the treatments. Soil water phase and soil pH were significantly higher in the P. yedoensis plot (water phase: 13.7-18.4%; soil pH: 4.62- 4.80) than in the undisturbed plots (water phas