甘肃安西极旱荒漠国家级自然保护区种子植物区系研究
首发时间:2014-03-14
摘要:安西极旱荒漠国家级自然保护区位于甘肃省河西走廊西段安西-敦煌盆地,自然环境严酷。通过实地调查以及资料查阅,统计出安西保护区共有种子植物61科,208属,453种,其中单种科、寡种科占总科数的80.33%,单种属、少型属占总属数的72.41%;总种数占中国北方沙区植物总种数的41.45%,其中含中国特有种占总种数的17.88%。对安西保护区种子植物的组成、特点、起源进行分析,主要结论如下:1植物种类贫乏,类群组成结构简单;2特有属较少,但是特有种众多;3植物区系中温带成分占绝对优势,古地中海成分也是重要组成成分;4植物区系具有明显旱生性和古老性。
关键词: 安西;极旱荒漠;植物区系
For information in English, please click here
Floristic Analysis of Spermatophytes in Hyper-Arid Desert of Gansu Anxi National Nature Reserve
Abstract:Anxi national nature reserve in hyper-arid desert is located at the Anxi- Dunhuang basin area in the western end of Hexi corridor in Gansu province.The natural environment is severe.Results based on a field surveys with date reviewing suggest that the spermatophyte distribution in the aera include 61 families,208 genera,453 species.The percentage of oligo-specific family and mono-specific family for the total families is 80.33%. The percentage of the oligo-specific genera and the mono-specific genera for the total gengera is 72.41%. The percentage of the total species for the total species of species of plants in sandy area of north China is 41.45%.,including 17.88% Chinese special species for the total species. The composition, characteristics, origin of spermatophytes in Anxi reserve were analyzed, the main conclusions are as follows: 1Species are poorer. The structure of group composition is simple.2Endemic genera lack, but a lot of endemic species;3 The temperate-zone elements of the flora in Anxi reserve are dominant, the ancient Mediterranean elements are important components;4The flora has obvious xerophilous and ancient.
Keywords: Anxi hyper-arid desert flora
基金:
论文图表:
引用
No.4589435952619139****
同行评议
共计0人参与
勘误表
甘肃安西极旱荒漠国家级自然保护区种子植物区系研究
评论
全部评论0/1000