Study On The Moss Flora Of The Daiyunshan National Nature Reserve, Fujian Province

Daiyunshan National Nature Reserve is situated in Dehua County, Fujian Province. It is the second highest Mountain in Fujian Province and was announced as National Nature Reserve in2005. Daiyunshan lies in Northeast-to-Southwest Mountain Ranges and parallels to the Wuyi Mountain. Located just in the transition zone of the south subtropical zone and middle subtropical zone, Daiyunshan is also the first mountain between Taiwan and the mainland. The bryological studies of Daiyunshan National Nature Reserve can provide comprehensive information and data for Chinese flora and geographical distribution of bryophytes as well as significant relationship between Taiwan and the Mainland.The author had collected2198moss samples from Daiyunshan National Nature Reserve during the three field collections. After indoor identification of these samples, a checklist of moss of Daiyunshan National Nature Reserve is given. Comparison between Daiyunshan and its adjacent8areas on species richness, similarity of genus and species and areal-types have been done based on this checklist. The conclusions can be drawn as following:1. The moss flora of Daiyunshan National Nature Reserve consists of302species (including infraspecific taxa) belonging to130genera in47families Among them,74species,11genera, and3families are new record to Fujian.2. The species diversity of mosses of Daiyunshan National Nature Reserve is preceded only by Emeishan and Daweishan. There are7dominant families, including55genera and162species accounting for42.30%of the total genera and53.65%of the total species. Hypnaceae is the richest among these7dominant families with38species in it, which account for12.58%of the total species and followed by Brachytheciaceae and Sematophyllaceae with32species and23species of mosses. Families with5species or more are considered as dominant genus. There are14dominant genera with118 species of mosses in Daiyunshan National Nature Reserve, which account for58.14%of the total species. Among them, only5dominant families with10species or more, which account for3.85%of the total genera. Whereas, the genera containing few species (fewer than five species) or only one species constitute a huge part of the entire flora.70genera with only one species account for the highest percentage-53.85%of the total genera, which indicates the biodiversity and complexity of genera composing of this flora.3. The phytogeographical distribution patterns of mosses of Daiyunshan National Nature Reserve can be classified into13areal-types. The East Asian areal-type accounting for33.33%(dominated by Sino-Japan, accounting for21.53%of the total species) of the entire flora is the most dominant type followed by tropical areal-type (22.22%) and the temperate areal-type (16.67%). The moss flora of Daiyunshan has a high percentage of endemic genera of East Asia, which include8species belonging to8genera.4. In comparision with its adjacent8areas on the similarity of the genera, Daiyunshan possess the closest floristic affinities with Jiuwanshan, Maoershan, and Daweishan, Maoershan, Jiudonglu and Jiuwanshan possess the closet floristic affinities on the similarity of the species with Daiyunshan. According to the Wupengcheng’s theory of geographical distribution of bryophytes, Jiuwanshan and Maoershan belong to Lingnan District, located just between Linnan District and Huadong District, Daiyunshan has more Lingnan District characteristic. Daiyunshan is close to Maoershan, Jiuwanshan, Daweishan of Lingnan district, and Emeishan of nearby Yungui District. So, the author suggests that the boundary between Lingnan District and Huadong District in Fujian Province should be move north forward.5. Based on the checklist of the present study and results published of mosses of Fujian Province, a total of658species of mosses belonging to221genera in53families are recorded as the updated checklist of mosses of Fujian Province.