盐边县木本植物资源组成分析

Composition Analysis of Woody Plant Resources in Yanbian County

雅砻江流域下游山高谷深,地势崎岖,气候复杂多样,物种丰富,以盐边县为例进行全面调查,该区域共有木本植物99科338属881种及以下分类单位,其中国家重点野生保护植物6种,常绿阔叶树种为485种,占总种数的55.05%;植物区系地理成分多样,科属组成复杂,泛热带分布49科69属,占总科数的49.50%和总属数的20.41%,其次为北温带分布18科47属,占总科数的18.18%和总属数的13.91%;植被呈稀树灌丛—常绿阔叶林—亚高山针叶林—高山灌丛的垂直分布特征。

In this study,a comprehensive investigation was carried out in Yanbian county,and which is located in the lower reaches of Yalongjing river basin,with high mountains and deep valleys,rugged terrain,complex and diverse climate and rich species.The results showed that there were 881 species of woody plants,belonging to 338 genera and 99 families,including 6 national key wild protected plants and 485 evergreen broad-leaved species,accounting for 55.05%of the total species.The flora had diverse geographical elements and complex composition of families and genera,with 49 families and 69 genera distributed in the pantropical zone,accounting for 49.50%of the total families and 20.41%of the total genera,followed by 18 families and 47 genera distributed in the north temperate zone,accounting for 18.18%of the total families and 13.91%of the total genera.In addition,the vegetation had the vertical distribution characteristics of sparse shrubs,evergreen broad-leaved forest,subalpine coniferous forest and alpine shrubs.