【摘要】 为了解毛脉槭林的群落学特征,在浙江天童山设立18个20 m×20 m样地,调查样地中胸径≥1 cm的物种数量、胸径、株高和蓄积量,分析其优势度。结果表明:1毛脉槭林物种组成复杂,拥有木本植物37科62属,计95种;区系分布类型分为11种,热带和温带分布属分别占总属数的55.5%和40.3%;2毛脉槭为亚热带常绿落叶阔叶混交林的一种优势树种,重要值10.4%,该种群的径级结构较为合理,呈间歇增长型结构,具有充沛的幼苗、幼树;3毛脉槭林胸径≥5 cm的个体平均密度为1122株·hm-2,平均胸径14.9 cm,其中毛脉槭最大胸径达50 cm,蓄积量达145.3 m3·hm-2。说明天童山保存着浙东典型的毛脉槭天然林,立木蓄积量较高,具有较高的保护和利用价值。更多还原

【Abstract】 In order to comprehend the community characteristics of Acer pubinerve forest,we set 18 plots( 20 m × 20 m each) in Tiantong,Zhejiang,investigated individuals ≥1 cm in diameter at breast height( dbh),collected their amount of species,dbh,height and stand volume,and calculated their dominance. The results were as follows: 1the species composition of the sampled A. pubinerve forest was complicated,including trees from 95 species,62 genrea and 37 families. 11 floristic elements were distinguished,in which tropic elements accounted for 55. 5 percent,and temperate elements 40. 3 percent; 2performed as a dominant species in the subtropical evergreen and mixed deciduous broadleaf forest,with the importance value of 10. 4 percent. The diameter structure of the A. pubinerve population was progressive with intervals,which indicated abundant seedlings and saplings,and was almost ideal; 3the average individual density( dbh ≥5 cm) of A. pubinerve forest was 1122 per hm2,average dbh 14. 9 cm,in which the maximum A. pubinerve’s dbh was up to 50 cm,the stand volume 145. 3 m3·hm-2. The results showed that natural A. pubinerve forest that is typical in eastern Zhejiang Province exists in Tiantong. The forest bears a relatively high stand volume,and is worth protecting and studying for further utility development.更多还原