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Bulletin of Botanical Research ›› 2025, Vol. 45 ›› Issue (6): 984-996.doi: 10.7525/j.issn.1673-5102.2025.06.015

• Original Paper • Previous Articles    

Species Diversity and Geographical Distribution of Wild Impatiens in Sichuan Province

Nian CEN, Liuyi REN, Xinxiang BAI, Meijun LI()   

  1. College of Forestry,Guizhou University,Guiyang 550025
  • Received:2025-01-07 Online:2025-11-20 Published:2025-11-27
  • Contact: Meijun LI E-mail:59787607@qq.com

Abstract:

Based on the establishment of species list and geographical distribution database, the species diversity and geographical distribution pattern of wild Impatiens in Sichuan Province were studied. The species composition, endemicity, geographical distribution pattern in Sichuan Province were analyzed through systematic literature retrieval, specimen textual research and field investigation respectively, and the hot spot area of Impatiens distribution were determined by screening algorithm. The results showed that a total of 108 wild species (including one variety) of Impatiens were recorded in Sichuan Province by April 2025, distributed in 82 counties, with 94 species endemic to China and 41 species endemic to Sichuan Province. The vertical distribution was most abundant at the elevation of 2 000~2 500 m. Nine hot counties, including Emeishan City, Mianning County, Muli County, Kangding City, Shimian County, Yanyuan County, Jiulong County, Jinchuan County and Zhaojue County were screened, which contained 80.55% of the wild Impatiens in Sichuan Province. Sichuan Province was characterized by diverse geomorphologic types and well-developed river systems, the distribution of Impatiens had high species diversity and regional endemicity. The study clarified and improved the species diversity of Impatiens in Sichuan Province, and provided the reference for protection, development and utilization of endemic germplasm resources.

Key words: Sichuan Province, Impatiens, hot spot area, species diversity, geographical distribution

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