阔叶林地

阔叶林地在不同更新方式下土壤理化性质的变化

Soil physical and chemical properties under different regeneration of broad leaved forest land

五种林分土壤酶活性均随土层深度增加而降低，且综合来看，混交林地土壤酶活性大于纯林林地，阔叶林林地大于针叶林林地。

The five forest soil all reduce with soil depth . Synthetically , soil urease activity in mixed forests is more than that in pure forests , and broad-leaved forests more than coniferous forests .

结果表明，地表糙率系数介于00182～02575之间，其中板栗林地小区糙率系数值最小，杉木、马尾松、阔叶林混交林地小区糙率系数值最大。

The results show that the values of the surface roughness coefficient vary from 0.018 2 to 0.257 5 . The minimum value is in the Castanea mollissima Bl. forest and the maximum value in the mixed forest of Cunninghamia lanceolata with Pinus massoniana and broad-leaved trees .

结果表明：连栽杉木林地土壤粘性明显高于针阔叶混交林，自然更新形成的针阔叶混交林对林地土壤质地、通气性有了明显的改善；

Results show that the texture adhesion of woodland soil in the continuous plantation of Chinese fir is higher than that in the mixed broad leaf needle one , resulting from natural regeneration , thus the mixed forest obviously improving the texture and aeration of woodland ;