黑河流域中游湿地维管束植物区系

Flora Research on vascular plants in wetland on the midstream of Heihe River(zhangye section)

对河西走廊黑河流域中游(张掖段)湿地植物区系的研究表明,该区域内共有维管束植物269种,隶属52科162属,其中包括蕨类植物1科1属3种,种子植物51科161属266种,种子植物中裸子植物2科2属2种,被子植物49科159属264种,可见植物种类较为丰富;同时通过对该区湿地维管束植物区系的地理成分分析表明,在科级水平上有6个分布类型2个变型,在属级水平上有14个分布类型8个变型,地理联系广泛,分布具有广域性,且以温带成分为主,热带性质的属起补充成分的作用。

The present research studied the flora in wetland on the midstream of Heihe River （zhangye section）. The results showed that there were 269 species of vascular plant which belonged to 162 genera in 52 families. There were 3 species of Pteridophyta belonging to 1 genera of 1 family and 266 species of Spermatophyte belonging to 161 genera of 51 families in which there were 2 species gymnosperms including 2 gen era and 2 families. The rich number of plants showed the great abundance of plant species in this area. Geographical elements of wetland vascular plan flora analysis showed that there were 6 distributional types and 2 subtypes at the species level and there were 14 distributional types el. The flora dominated by temperate elements with tropical elements as and 8 subtypes at the genera lev complementary.