作　　者： ; ; ; ; ; ;

机构地区： 中南林业科技大学

出　　处： 《中南林业科技大学学报》 2014年第7期50-54,共5页

摘　　要： 开展基于群落空间结构抗风性研究,对于雷州半岛沿海防护林的构建具有重要的意义。以湛江湖光岩风景区天然林为研究对象,应用传统林分结构因子,结合混交度、角尺度、大小比数3个林分结构空间参数,开展抗风性天然林空间结构调查。结果表明:湖光岩风景区天然林内植物种类丰富度高,样方共30种乔木树种,林分水平结构分布均衡,空间分配合理,垂直结构层次明显,以9 m、15 m为界点可分为三林层;林分平均混交度为0.605,属中强度混交林,树种隔离程度较高,结构稳定;林分平均角度尺为0.582,为弱度团状分布;平均大小比数为0.491,属大小分化均衡。因此,湛江湖光岩风景区天然林的空间结构林分处于抗风性稳定演替状态。 The study based on wind resistance of community spatial structure has great important significance for the construction of coastal shelterbelt in Leizhou Peninsula. By taking the forests of Huguangyan scenic spot in Zhanjiang city as the studied objects, and applying three traditional forest structure factors, combined with mingling, neighborhood pattern and neighborhood comparison, the investigations on natural spatial structure＇s wind resistance were carried out. The results show that the plant species richness in the natural forest was high in Zhanjiang Huguangyan scenic plot; There were 30 kinds of tree species in the survey sample, the natural communities＇ stand structure distribution were in balanced state, the space allocation was reasonable, the vertical structure was obvious and can be divided into three layers when with the 9th meter and 15 th meter points as the boundary points; The average mingling of the stand was 0.605, belonging to medium strength mixed forest, its species isolation was high and the structure was stability; Average neighborhood pattern of the stand was 0.582, with weak degree slug distribution; The average neighborhood comparison was 0.491, belonging to Size differentiation balanced. So, the spatial structure of natural forest succession is in a steady wind resistance state in Huguangyan scenic spot, Zhanjiang city.

关 键 词： 天然林 群落空间结构 湖光岩风景区 混交度 角尺度 大小比数 抗风性

领　　域： [农业科学]