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对安徽省休宁县次生林类型的组成、结构、外貌特征、物种多样性等进行了较系统的研究。结果表明 :1)休宁县以中、低山为主要地貌 ,属于比较典型的中亚热带气候 ,具有较高的物种多样性指数 ,其最丰富的地段分布在海拔 350～ 50 0m之间 ,Shannor -Wiener物种多样性指数为 3 5～ 4 5;2 )构成本县次生林建群种的主要科有壳斗科、山茶科和樟科 ;3)次生林类型与其所处的土壤环境有密切关系。常绿阔叶林、针阔混交林、落叶常绿阔叶混交林所分布的土壤多为黄壤和黄红壤 ,物种多样性指数高。落叶阔叶林大多分布在黄棕壤上 ,其物种多样性指数低。
The composition, structure, appearance, species diversity of secondary forest in Xiuning County of Anhui Province were systematically studied. The results showed that: 1) Middle and low mountains were the main landform in Xiuning County, which belonged to the typical subtropical climate with high species diversity index. The most abundant land was distributed between 350 and 500 meters above sea level. Shannor - Wiener species diversity index is 35 ~ 45; 2) The main families that constitute the secondary forestry constructive species in this county are Fagaceae, Camelliaceae and Lauraceae; 3) The type of secondary forest is closely related to the soil environment in which it is located. The evergreen broad-leaved forest, conifer and broad-leaved mixed forest, deciduous evergreen broad-leaved mixed forest mostly distribute yellow soil and yellow-red soil, and the species diversity index is high. Deciduous broad-leaved forests are mostly distributed in yellow-brown soil, and their species diversity index is low.