Analysis of the Herbaceous Angiosperms Flora in Gexigou Nature Reserve in Sichaun

Based on close investigation and related data, the floristic characteristics of wild herb plants were analyzed for Gexigou National Nature Reserve of Sichuan.The results showed that (1) the floristic composition was abundant with various types, containing 794 wild herb angiosperms that belonged to 305 genera and 56 families.(2) Geographic distribution types of genera were abundant (including 15 distribution types of genera), and the temperate components was dominant, following by the world and tropical components, which accounted for 64.91%, 16.72% and 11.80%, respectively. In view of geographic distribution of families, the temperate and the world components accounted for the largest proportions (14.29%), following by the pantropic (12.50%) and East-Asia and North America disjunct (10.71%) components. These results indicated a obvious temperate characteristics. (3) With the exception of many families and genera possessing single species, there were abundant endemic genera and characteristic plants in the Gexigou Reserve.