小兴安岭菊科植物区系地理与多样性研究

目的]为小兴安岭菊科植物资源的保护和合理开发利用提供理论依据。方法]采用野外调查和标本鉴定的方法,对小兴安岭菊科植物物种多样性、区系地理成分和经济用途多样性等进行了研究。结果]该区共有菊科植物126种,隶属48属,且优势属明显,少种属和单种属占总属数的比例分别为37.50%和56.25%。从属层次上表现出典型的温带性质,以北温带成分为主,且没有我国特有属。结论]小兴安岭菊科植物组成丰富,区系地理成分多样,经济用途多样。

Study on the Floristic Geography and Diversity of Asteraceae in the Xiaoxing'an Mountains

Objective] To provide theoretical basis for protection,reasonable development and utilization of Asteraceae resources in the Xiaoxing'an Mountains.Method] Using the methods of field survey and identification of specimen,the species diversity,floristic geography and economic utility diversify of Asteraceae plants in the Xiaoxing'an Mountains were studied.Result] There were 126 species of Asteraceae belonging to 48 genera.The dominant genera were prominent,and the percentage of minor genus and single genus took 37.50％ and 56.25％ of total number of genera,respectively.Asteraceae plants in the region showed the typical temperate floral characters at genus level,North Temperate type was the dominant.And there was no Chinese endemic genus.Conclusion] Asteraceae plants in the Xiaoxing'an Mountains have abundant plant components,many geographical elements of flora and various economic utility.