Statistics and analysis on the seed plant flora in Dashanfeng,Zhejiang

According to investigation and statistics,there are 1 032 species of wild seed plants,belonging to 524 genera and 140 families in Dashanfeng. The areal types of families,genera and species are analyzed respectively. The pantropic type of families reaches 43.6%,cosmopolitan type 20%,and north temperate one 18.6%,according to the statistics of plant families,which indicates that temperate elements are less than tropical ones (35∶77).The pantropic type is 22.9%,the north temperate type 17.4% and the East Asia one 17.0% at generic level. The temperate elements are slightly more than the tropical ones(237∶230). At species level, the endemic to china type reaches 44.4%,the East Asia type 21.0%,and the tropical Asia one 17.4%. The temperate elements are much more than the tropical ones(317∶252). The analysis also shows that Dashanfeng plant flora lies between the temperate zone and tropics, and it has the subtropical characters and the complicated geographical features,it has close relation with plant flora in Japan. Through the comparisons of similarity coefficients which are about genera and species between Dashanfeng and adjacent mountains,it is proved that Dashanfeng is closer to adjacent mountains,they should belong to the same natural flora.