Welcome to Acta Prataculturae Sinica ! Today is Share:

Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (4): 140-149.DOI: 10.11686/cyxb2020192

Previous Articles     Next Articles

Analysis of the floristic diversity of vascular plants in Duoer National Nature Reserve, Gansu

Sheng-jing SHI1(), Jun GAO2, Chun-xia WANG2, Zhen JIANG2, Xue-lin CHEN1()   

  1. 1.College of Life Sciences,Northwestern Normal University,Lanzhou 730070,China
    2.Gansu Wildlife Administration,Lanzhou 730050,China
  • Received:2020-04-28 Revised:2020-05-25 Online:2021-04-20 Published:2021-03-16
  • Contact: Xue-lin CHEN

Abstract:

This paper reports an analysis of the species composition and distribution types of vascular plants in Duoer National Nature Reserve, based on field investigation, plant collection specimens and literature research. We found that there were 1323 species of vascular plants present in the study area. These belong to 469 genera and 115 families, among which 61 species belonging to 25 genera and 14 families were pteridophytes, 25 species belonging to eight genera and four families were gymnosperms, and 1237 species belonging to 436 genera and 97 families were angiosperms. The floristic diversity of the dominant vascular plant species in Duoer Reserve was obvious, in that 879 species (66.44% of those present) were found to belong to a dominant family with 20 or more species represented. There was a relatively high ratio of monotypic genera or oligotypic genera and these accounted for 95.31% of the total genera and 75.51% of the total species present in the basin. At the family level, tropical families (30.43%) were slightly more numerous than families of temperate origin (26.96%). At the genus level, the temperate families (72.49%) were significantly more numerous than the tropical families (13.01%). At the species level, there were 545 endemic species, of which 538 species were also found in surrounding provinces, reflecting the obvious transition between and convergence of different floral assemblages in this region. The geographical composition of vascular flora in this reserve was complex and diverse, and there were 15 geographic distribution types and five variants among the genera present. Species of temperate geographic distribution type were dominant, especially those of north temperate distribution. There were many rare and endangered wild plants present in this area, and 37 species were listed as protected. Some ancient relict plants had a good primitive distribution in the reserve. The study has improved knowledge of the floristic characteristics of vascular plants in Duoer National Nature Reserve and provided strong foundation for building understanding of plant species biodiversity in the reserve in the future.

Key words: Duoer National Nature Reserve, vascular plant, floral analysis, components of landscape