常绿阔叶林演替系列群落下土壤性质的比较

Comparison of Soil Characteristics Under Different Successive Communities of Evergreen Broad_Leaved Forest

研究了浙江天童国家森林公园常绿阔叶林演替系列群落下土壤的物理及化学性质的变化．结果表明，从群落演替前期阶段至相对稳定的顶极群落，土壤质地及其结构明显得到改善，土壤酸碱度逐渐降低，枯落物分解速度加快，有机质矿化程度提高．土壤有效养分含量虽有所增加，但不明显．在此基础上分析了土壤性质与常绿阔叶林演替的关系．

In this paper,we have measured the physical and chemical characteristics of soil under the different successive communities of evergreen broad_leaved forest in Tiantong National Forest Park.The results show that,from Pinus massoniana forest to the relative steadly climax,the texture and structure of soil improve obviously,the pH value reduces gradually,the decomposing rate of litter quickens,the mineralization of organic matter enhances,the available nutrient increases but not obvious.