Subtropical Plant Science >

2024 , Vol. 53 >Issue 3: 257 - 270

DOI: https://doi.org/10.3969/j.issn.1009-7791.2024.03.009

Research articles

Investigation and Analysis of the Diversity of Self-Generated Herbaceous Plants in Three Universities in Lanzhou City

  • 安 琪，刘文兰
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  • (College of Forestry, Gansu Agricultural University, Lanzhou 730000, Gansu China)

Received date: 2024-03-25

  Accepted date: 2024-05-14

  Online published: 2024-08-23

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Abstract

Autogenic plants are essential plant materials for constructing low-cost, low-maintenance, and sustainable conservation-oriented landscapes. To comprehend the current status of autogenic herbaceous plant resources in colleges and universities within Lanzhou City and to apply them more effectively in gardens, the grid sampling approach was adopted to carry out monthly investigations of autogenic herbaceous plants on the campuses of Gansu Agricultural University, Lanzhou University, and the old campus of Lanzhou University of Technology from April to October 2023. The habitats were classified into 4 types, totaling 146 sampling points and 438 sampling plots. The species composition and diversity characteristics were analyzed through calculation methods such as the Shannon-Wiener index and Ducan test. The results indicated that a total of 103 species belonging to 87 genera and 32 families of autogenic herbaceous plants were surveyed in the three universities, among which 61 were native plants, accounting for 59.22%; 21 were invasive alien plants, constituting 20.39%. The life form was predominantly perennial herbs, with a total of 63 species, and 40 were annual and biennial herbs. The top 3 species in terms of species frequency were Taraxacum mongolicum (67.63%), Viola prionantha (55.76%), and Trifolium repens (48.32%), which were abundant in all sampling plots and had certain growth advantages. The dominant families were Compositae and Poaceae, with 44 species belonging to 34 genera. Compositae plants accounted for the highest proportion; among them, Taraxacum mongolicum held significant values within the top 5 in three types of sampling plots such as shade, grassland, and road, and ranked first in the shade sampling plot of Gansu Agricultural University, with an important value of 42.21. From the perspective of spatial pattern, there were more species in shade and grassland habitats, with 59 and 47 species respectively, and their Shannon-Wiener index was in the order of shade > grassland > road > waterside; the Shannon-Wiener index demonstrated a trend of initially rising, then falling, and subsequently rising over the months, with the highest values in June and October, averaging 6.41 and 6.17 respectively. The diversity of each habitat sampling plot was at a relatively high level, which was related to the climate, human disturbance, and management level. The autogenic herbaceous plants on campus exhibit good ecological adaptability and plant landscape effects. Scientific utilization and planning can shape garden plant landscapes with distinctive features and ecological significance.

Key words： self-generated herbaceous plants; species composition; diversity analysis; landscape application; campus; Lanzhou city

Cite this article

安 琪，刘文兰 . Investigation and Analysis of the Diversity of Self-Generated Herbaceous Plants in Three Universities in Lanzhou City[J]. Subtropical Plant Science, 2024 , 53(3) : 257 -270 . DOI: 10.3969/j.issn.1009-7791.2024.03.009

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