Reasons for the Enrichment of Type Specimen Plants from Cangshan in Dali
Dali Cangshan is one of the most concentrated areas of type specimen plants in China.To understand the reasons for the enrichment of type specimen plants in Cangshan,based on existing literature and digital platforms for species information(such as CVH,iPlant,sp2000),a list of seed plants with type specimens produced in or near Cangshan was compiled,and their endemic characteristics were analyzed;Analyze the spatiotemporal dynamics of plant specimen collection in Cangshan and explore the historical reasons for the abundance of type specimen plants in Cangshan.The results show that:(1)Currently,a total of 297 species of seed plants have been recorded as type specimens in Cangshan,among which X species are endemic to Cangshan.(2)The history of collecting plant speci-mens in Cangshan can be traced back to 1883.Between 1900 and 2020,there were 118 annual occurrences of plant specimen collection events in Dali(with a frequency of 97.5%);Between 1905 and 2017,plant specimen collection events occurred in Cangshan in 80 years(with a frequency of 70.8%).Among the 16 years with peak collection vol-ume in Dali,there were also records of collection in Cangshan in 8 years,with a synchronization rate of 50%.The results indicate that:Cangshan has a unique geographical location,located at the intersection of multiple plant com-munities,and natural conditions have nurtured rich biodiversity and endemic populations.At the same time,its geo-graphical advantage of being close to Dali Old City makes it an important node for plant exploration in western and northwest Yunnan.Since 1883,botanists at home and abroad have frequently visited Cangshan,promoting the dis-covery and description of new species,and thereby increasing the diversity of type specimen plants in Cangshan.(2)The population of type locality carries useful research information such as species morphology,ecology,and ge-netics,in situ conservation should be a good way.It is recommended to strengthen on-site protection measures for the original population of Cangshan type specimen plants to protect this precious biodiversity resource.
specimens collectiontype specimenseed plantsCangshan in Dalipopulation of type locality
万方数据
维普
