大兴安岭北坡火烧迹地自然与人工干预下的植被恢复模式初探

Model of vegetation restoration under natural regeneration and human interference in the burned area of northern Daxinganling

针对大兴安岭北坡林区森林植被在不同火烧强度、火烧时间的火烧迹地上的恢复状况进行了调查研究。结果表明 ,轻度火烧区的植被自然更新恢复良好 ;中度火烧区的森林植被依靠人工促进更新要比自然更新更早达到预期目标 ;重度火烧区的森林植被如果完全依靠自然更新 ,恢复到预期目标会非常缓慢 ,而通过人工更新则可跨越几个演替阶段 ,较快接近本地的顶极群落。

This paper studied the vegetation in the burned area of different severities and ages of Northern Daxinganling. The result showed that natural vegetation regeneration in lightly burned area restores well. In moderately burned area, human-promoted regeneration develops faster than natural regeneration. In severely burned area, human reforested area will span several succession phases and approach climax community rather sooner than natural regeneration.