贵州施秉喀斯特世界自然遗产提名地苔藓植物区系特征

由于地理环境优越、海拔跨度大、生境异质性高、人为影响小等原因，贵州施秉喀斯特世界自然遗产提名地的苔藓植物丰富，共有50科128属286种（含变种和亚种），其中苔类17科23属43种，藓类33科105属243种。其优势科、属均反映了该区系的温带向热带过渡的性质。区系地理成分分析结果显示，该区苔藓植物北方温带成分、热带成分和东亚成分分别占37．12％、31．82％和30．30％，其中中国特有分布型占12．12％，反映了施秉喀斯特苔藓植物区系具有温热并重、东亚色彩浓厚、特有性较高的特征。通过对施秉喀斯特与其它五个区域的苔藓区系进行对比发现．施秉苔藓区系丰富度高，与同为云贵区的香纸沟、马岭河、罗平喀斯特地区亲缘关系最近。

Bryoflora Characteristics of Shibing Karst World Natural Heritage Nominated Property in Guizhou

Shibing karst World Natural Heritage nominated property is rich in bryophytes because of its superior geography, huge elevation difference, high heterogeneity in habitats, and little human disturbance. A total of 286 species of bryophytes （including subspecies and varieties） in 128 genera, 50 families were found. There were 43 species of Hepaticae in 23 genera, 17 families and 243 species of Musci in 105 genera, 33 families. Both the dominant families and genera suggest that the bryoflora of Shibing karst area is transitional between temperate zone and tropic. The phytogeographical elements were dominated by northern temperate elements （37. 12%）, tropical elements （31.82%） and eastern Asia elements （30. 30%）, while area-pattern of endemic to China occupied 12. 12%. Therefore, the bryoflora of Shibing karst area is of the nature of both the temperate and tropical elements, and possessed strong eastern-Asia eolour and relatively high endemism. The results of comparison with other five sites showthat the species abundance of Shibing karst area was higher and its bryoflora was most similar to Xiangzhigou, Malinghe and Luoping karst areas in Yunnan-Guizhou Bryological Region.