吉林省延边州外来入侵种子植物区系研究

Study on Flora of Invasive Alien Seeds in Yanbian Prefecture,Jilin Province

本研究采用路线调查和样地调查相结合的调查方法,调查了吉林省延边州内延吉市、图们市等8个市(县)233个样地的入侵种子植物,采用植物区系地理的方法,分析了该种子植物区系特征。结果表明,吉林省延边州外来入侵种子植物16科35属45种,以菊科、豆科等植物为主,一、二年生的草本植物为主,原产地为美洲的植物最多,占55.56%。通过对延边州不同地区群落种子植物属的相似性系数分析,相似性系数最大的为延吉-和龙(95.65%),相似性系数最小的是安图-龙井(80.65%)。

In this study,the invasive seed plants from 233 sample sites in 8 cities(counties)including Yanji and Tumen were investigated by route survey and sample site survey.The floristic characteristics of the seed plants were analyzed by the method of floristic geography.The results showed that there were 45 species,35 genera,16 families of invasive seed plants in Yanbian,Jilin Province,mainly composed of Asteraceae and Fabaceae,and mainly annual and biennial herbs.The plants originating from America accounted for 55.56%.By analyzing the similarity coefficient of seed plant genera in different regions of Yanbian Prefecture,the largest similarity coefficient was Yanji-Heron(95.65%),and the smallest similarity coefficient was Antu-Longjing(80.65%).