Investigation and Analysis of Vascular Plant Flora in Xuzhou Area

Abstract Xuzhou is located in the northwest of Jiangsu Province, at the junction of the four provinces of Sulu, Henan and Anhui. It belongs to a warm temperate and semi-humid climate. Based on the field investigation in Xuzhou area, a total of 1037 species, 595 genera and 144 families of vascular plants were obtained. The flora has certain importance and particularity in Jiangsu area. Based on the analysis of the species diversity of vascular plants and their floristic characteristics and geographical components, it is found that there are a lot of vascular plants in Xuzhou, most of which are distributed in the world and north temperate zone, and the tropical distribution also accounts for a certain proportion, which shows that the flora is mainly the type of transition from tropical to temperate, At the same time, its flora also has some ancient elements.