黄河三角洲国家级自然保护区植物区系研究

Studies of flora of Yellow River Delta National Reserve Area

对黄河三角洲国家级自然保护区的植物区系进行了研究分析 ,该区系具有以下特点 :组成植物区系成分的种类比较少 ,计有 43科、1 2 3属、1 93种 ;温带性质明显 ,温带分布型属占总属数的 54.7% ;植物成分以草本植物为主 ,自然分布的木本植物只有草麻黄 (Ephedra sini-ca)、柳 (Salix matsudana)、杞柳 (S.integra)、柽柳 (Tamarix chinensis)、单叶蔓荆 (Vitex trifo-lia var.simplicifolia)等少数几种 ;植物成分中盐生植物种类比较丰富 ,计有 73种 ,占总种数的 37.8% ;植物成分中湿生、水生植物种类丰富 ,计有 92种 ,占总种数的 47.7% 。

The flora of Yellow River Delta National Reserve Area was studied here and the result showed its characters as follows:less species in this area,only 193 species belonging to 123 genera of 43 families,obviously temperate nature in floristic components with the genera of temperate areal types accounting for 54.7% of total genera,mainly herbaceous species and only few woody plants,that is Ephedra sinica,Salix matsudana,S.integra,Tamarix chinensis,Vitex trifolia var. simplicifolia ,relative rich species of halophytes,with 73 species accounting for 37.8% of total species,rich species of hydrophytes,with 92 species accounting for 47.7% of total,thus the delta area belonging to a typical wetland ecosystem.