伏牛山东段栎类次生林群落结构特征

Community Structure Characteristics of Quercus Secondary Forest in the Eastern Section of Funiu Mountain

对河南伏牛山东段栎类次生林群落结构特征进行了分析。结果表明:槲栎重要值最高为46.80%,其次为麻栎、黄栌;按照相对显著度排序,栎类占据了前3,依次为槲栎、麻栎、栓皮栎,三者之和占全部乔木的94.94%;群落不同层次物种多样性指数(R、H、D、J)均为灌木层>草木层>乔木层;上层及大径阶乔木均以槲栎为主,垂直分布从上至下层乔木种类、数量逐步增加,径级分布呈倒“J”型左偏,群落处于中幼龄林演替阶段,自然更新良好。

The community structure characteristics of Quercus Secondary Forests were vestigated and analyzed in the eastern section of Funiu Mountain.The results showed that,Quercusalienaiwas the dominant species in the arbor layer with an important value of 46.80%,followed by Quercusacutissima and Cotinuscoggygria;According to the relative prominence of top 3 species were Quercus alienai、Quercus acutissima and Quercus variabilis,their total relative prominence account for 99.04%;The results of comparison for diversity index(R,H,D,J)among tree,shrub and herb are shru>herb>tree;The tree species in the diameter class and upper layers are mainly Quercusalienai,the quantity of trees species and trees gradually increase from upper to lower layer,the DBH class distribution of trees in both plots were reverse-J-shaped,Community is in the young forest to Middle Aged forest succession stage,natural regeneration ability is strong.