Study On Bryophyte Diversity And Flora Of S-W Hubei

Hubei Province lies in the central section of China, within the scope of middle subtropics. S-W Hubei is located in the southwest of Hubei, with the geographical position from 108 ° 23' 12' to 110 ° 38' 08' E in longitude and from 29 ° 07 ' 10' " to 31 ° 24' 13 " N in latitude. It includes two cities which are En-shi City and Li-chuan City and three counties which are Xuan-en County, Xian-fen County, Lai-feng County. The type of climate in this region is the seasonal mountainous humid one in middle subtropics. The plants are of the feature of transition between south and north that there is not only many kinds of trees in north but also generous ones of in south and this area is aslo located in the transition zone of east and west for plants, which is favorable for them in the vicinity to invade. It is one of the regions with abundant biotic resources in China.This region had not been investigated systematically. From August to Suptember in 2005, the auther and his companions made bryological survey for several times in this region and 1876 packages of bryophytes were collected and 7 sites were made for the preliminary ecological investigation there. From these specimens, 61 families, 157 genera and 388 species ( including subspecies and varieties) are identified. Among them, 11 families, 34 genera and 208 species of bryophytes are first found in Hubei Province and 2 species are first found in China.According to "The areal-types of Chinese genera of seed plants" by Wu Zheng-yi, 15 types of the bryoflora in this region are recongnized. Among them, The East Asian elements are the most important ones with 107 species corresponding to 19.23% of the total. Following the East Asian elements, the North Temprate elements consist of 79 species corresponding to 21.59% of the total. The third one is the Tropical Asian...