黔中瀑布水生苔藓植物区系及其生物喀斯特沉积生态类型研究

对贵州中部18个喀斯特瀑布水生苔藓植物进行了研究。瀑布苔藓植物区系种类由14 科23 属38 种组成, 藓类( Mosses) 含8 科17 属31 种, 苔类( Liv erw o rts) 5科5属6种,而角苔类( Ho rnwo r t)仅1科1属1种。区系地理成分含世界分布( 15. 79% ) , 北温带分布( 36. 84% ) ,旧世界温带分布( 5. 26% )、泛热带分布( 2. 63% )、热带亚洲分布( 5. 267% ) , 东亚分布( 26. 32% ) 和中国特有( 7. 90% )等7种成分。根据喀斯特瀑布沉积环境和苔藓植物优势种类组成特征,可划分黔中瀑布苔藓沉积生态类型为溪流瀑布沉积、河流瀑布沉积、石灰华坝沉积和瀑布洞穴沉积4种类型及15种生物喀斯特沉积亚类型。 

Floristic characteristics of aquatic bryophytes and their biokarst deposition types at waterfalls in central Guizhou, China

The flora of aquatic bryophytes at 18 karst waterfalls in central Guizhou are studied from 2004 to 2006. The bryoflora consists of 38 taxa in 23 genera and 14 families. Among them, 31 taxa in 17 genera and 8 families of mosses are found, 6 taxa in 5 genera and 5 families of liverworts are recorded while only one taxa of Hornwort. The phytogeographical elements of the bryoflora include the elements in Cosmopolitans (15.79%), North Temperate (36.84%), Old World Temperate (5.26%), Pantropical (2.63%), Tropical Asia (5.26%), East Asia (26.32%) and Endemic to China (7.90% ). According to the features of environmental factors and key bryophyte species, 4 ecological types - stream waterfall deposition, river waterfall deposition and dam deposition as well as cave deposition, and 15 subtypes of biokarst deposition associated with bryophytes, can be distinguished.