为研究人为干扰对亚热带常绿阔叶林群落的影响，笔者以道路可达性作为干扰的度量指标，对浙江杭州千岛湖景区森林氧吧公园中的甜槠（Castanopsis eyrei）林的群落结构与道路可达性的关系进行了定量分析。结果发现，群落平均盖度与道路距离呈显著正指数相关关系，表明研究地内人为干扰的增加导致群落生物量和生长状况的下降；但发现不同层次对干扰的响应具有不同的敏感性：乔木层<草本层<灌木层。与盖度不同，乔木层树高、胸径与道路距离之间未发现显著指数相关，表明不同植物特性对人为干扰的响应方式具有一定差异性。

To study the effect of human disturbances on subtropical evergreen broadleaved forests, the author quantitatively examined the community structure of the Castanopsis eyrei forest in relation to road accessibility in Thousand-Island Lake, Hangzhou, Zhejiang Province. The results showed that the average canopy cover of the tree, shrub and grass layer had significantly positive exponential correlation with the distance to the road, suggesting that increasing human disturbances could cause declines in accumulated biomass and growth condition of the community. However, these three layers showed different sensitivity in response to disturbances, i.e. trees