Flora of Desert Seed Plants in the Northern and Southern Margin of Junggar Basin

doi:10.6048/j.issn.1001-4330.2019.03.008

Abstract

Abstract: Objective This project aims to study the characteristics of desert flora in the northern and southern margins of Junggar Basin and to reveal the family and genus composition, geographical composition, plant life form and ecotype of the flora in this area, it is expected that the economic and environmental development in arid areas will be coordinated and scientific basis for the protection of desert ecological environment and biodiversity will be provided.Method In the Junggar Basin, field surveys, collection of plant specimens, and organize related books were conducted. Taking Junggar Basin as an object, through field investigation, collection of plant specimens and arrangement of related data, the composition characteristics and floristic geographical components of desert plants in the northern and southern margin of Junggar Basin were analyzed.Result (1)The results showed that the germplasm resource in the studied areas were relatively abundant which included 679 seed plant species belonging to 46 families and 238 genera.(2)Sort by the number of species in the family that the dominant families were compositae, chenopodiaceae, leguminosae, cruciferae and gramineae.(3)The plant life forms were mainly herb, which accounted for 87.65%. (4)The geographic element of the flora was mainly temperate element, families and genera distributed accounted for 58.70%, 84.45% of the total families, respectively;(5)The plants in the southern margin and the northern margin had higher similarity, and the similar values of families, genera and species were 75%, 58.13% and 39.58%, respectively.Conclusion The distribution characteristics of plants in the northern and southern margin of Junggar Basin have high similarity, but there are also some differences.

Key words: flora; Junggar Basin; geographical element; seed plant

摘要： 目的研究准噶尔盆地荒漠植物区系特征,分析该地区植物区系的科属组成、地理成分和植物生活型及生态型等特征,为干旱区经济和环境协调发展、荒漠生态环境及生物多样性的保护提供科学依据。方法以准噶尔盆地为对象,通过野外调查,采集植物标本以及相关资料的整理,分析准噶尔盆地南北缘地区荒漠植物进行了组成特征及区系的地理成分。结果 (1)准噶尔盆地南北缘地区植物种质资源相对丰富,种子植物共679种,隶属于46科238属。(2)按科内含种数多少排序,优势科有菊科、藜科、豆科、十字花科、禾本科等。(3)植物生活型以草本为主,占总种数的87.63%。(4)区系地理成分以温带分布型为主,科、属分别占其总数的58.70%、84.45%。(5)南缘与北缘地区的植物具有较高的相似性,其科、属、种的相似值分别为75%、58.13%、39.58%。结论准噶尔盆地南北缘地区的植物分布特征具有较高的相似性,也存在一定的差异性。

关键词: 植物区系, 准噶尔盆地, 地理成分, 种子植物

CLC Number:

KONG Xiao-jing, AN Sha-zhou, LIU Hui-min. Flora of Desert Seed Plants in the Northern and Southern Margin of Junggar Basin[J]. Xinjiang Agricultural Sciences, 2019, 56(3): 457-464.

孔晓晶, 安沙舟, 刘慧敏. 准噶尔盆地南北缘荒漠种子植物区系特征[J]. 新疆农业科学, 2019, 56(3): 457-464.

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