【摘要】 通过对福建省武平县天然阔叶林砍伐后火烧山土壤物理性质变化的研究表明：在0～20cm和20～40cm土层中，自然更新和人工更新比原始林，土壤容积质量增加；总孔隙度下降；而毛管孔隙度和非毛管孔隙度以及自然含水量变化比较复杂，有的增加，有的下降．而人工更新比自然更新其土壤物理性质变差．更多还原

【Abstract】 Study on the soil change of physical characteristics of natural and artificial regeneration. After cutting and burning off the natural broad-leaved forest, was measured two years ago. The results showed that soil bulk density of 0--20cm an 20--40cm layers had been increasing in natural regeneration and artificial regeneration in contrast with virgin forest’s, but the total porosity decreased. The soil physical and chemical characteristics of the artificial regeneration in contrast with the natural regeneration decreased, too.更多还原