Abstract:
In order to improve the flora characteristics of seed plants in Zoige region (Sichuan district), the survey data in Hongyuan, Zoige, Aba and Songpan counties from 2019 to 2022 were taken as the analysis object, and the current situation of seed plants in Zoige region was statistically analyzed based on the literature. The results showed that: (1) There were 1173 species of wild seed plants in Zoige area, belonging to 74 families and 367 genera, with abundant plant seed resources, most of which were herbaceous plants (77.41%). There were 6 families with more than 51 families including Compositae, Scrophulariaceae, Cyperaceae. There were 5 genera including
Pedicularis,
Salix, and
Gerbera, which contained more than 21 species. (2) In terms of family composition, small families (2~5 species) and medium families (6~20 species) were the main families in the region, accounting for 58.11% of the total families. From the composition of genera, single species (1 species) was the main genus in the region, accounting for 49.05% of the total genera. (3) According to the floristic composition of families, it could be divided into 6 distribution types and 3 variants, among which the temperate distribution families (39.19%) were the most. In terms of the floristic composition of the genus, it could be divided into 15 distribution types and 13 variants. The temperate elements accounted for 73.84% of the total genera, with the highest proportion, which was a typical temperate nature. (4) There were 48 species of rare and endangered wild plants in this area, accounting for 4.09% of the total species, which were rich in endangered species and ancient relics.