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从种群生态学和干扰生态学的角度,对重庆北碚区茅庵林场火烧迹地针阔混交林进行群落调查,研究火烧干扰后植物幼苗的发生及存活,结果显示:火烧干扰后,幼苗的种密度、个体密度、聚集性分布程度均随着火烧干扰强度的增强而降低,火干扰较弱区域的幼苗的种密度和个体密度显著高于未火烧区域,火干扰较强的区域则低于未受火烧的林地.认为,较弱的火干扰对幼苗发生及存活有一定促进作用,可使幼苗的生长状况优于无火烧干扰区域,高强度火干扰对幼苗生长有负影响.
From the perspective of population ecology and disturbance ecology, the community investigation of the coniferous and broad-leaved mixed forest in the burned area of Mu’an Forest Farm in Beibei District of Chongqing was carried out to study the occurrence and survival of plant seedlings after the fire disturbance. The results showed that the species density , The density of individuals and the degree of aggregation distribution decreased with the increasing of the intensity of fire disturbance. The species density and individual density of seedlings in weaker area of fire disturbance were significantly higher than those in unfire area, while the area with stronger fire disturbance was lower It is believed that the weaker fire disturbance can promote seedling emergence and survival, which can make the seedling growth better than the non-burning disturbance area, and the high intensity fire disturbance has a negative impact on seedling growth.