通过对大兴安岭“6·5”森林火灾后沼泽土壤变化的研究表明,火灾对土壤的土体构型、物理性质、化学性质及微生物特征均产生了不同程度的影响,并且有利于沼泽土壤的发生发育.
In this paper, we have researched the changes of swamp soil after the great fire event occurred on 6 May, 1987 in the Da Hinggan Mountain. It is revealed that the fire had severely effected the soil profile by burning away the organic matter in topsoil. Soil thermal situation has been changed, and soil temperature rise. Soil water content has been altered because the water reservation condition has been changed by the fire. Soil pH and the content of P2O5, K2O, CaO, MgO increase after the fire, on the contrary, the organic matter content and N content decrease, the quantity of microorganism greatly increased after the fire. It is considered that the fire is beneficial to the development and genesis of swamp soil in this area.
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