武陵山地区药用蕨类植物资源调查

武陵山地区共有药用蕨类植物41科，80属，214种.调查结果表明，药用蕨类植物在武陵山地区种类丰富，优势类群明显；地理成分复杂，东亚成分突出；地域分布不均，以中低海拔为主；类型众多，疗用广泛.通过对该类植物资源可利用量的估计，该区至少有79种可供直接开发利用，100种根据需要可酌量控制利用，有35种应严加保护.

The Investigation and Study on Resources of Medicinal Ferns in Wulingshan Region, China

Wulingshan region is located at 27°28′ to 30°05′N and 107°02′ to 111°35′E,from 189.4 m to 2 370 m above sea level and covers an area of Ca.100 000 km2.In this paper,some investigations and studies on resources of medicinal ferns in Wulingshan region have been reported.The result shows: (1) The flora is rich,there are 214 species belonging to 41 families and 80 genera of medicinal ferns in the region,the dominated taxa are Polypodiaceae,Dryopteridaceae,Athyriaceae,Pteridaceae,Selaginellaceae and Selaginella,Pteris,Asplenium,Polystichum,Lepisorus,Pyrrosia,Dryopterisl;(2) The geographic elements are complicated and East Asia element takes the largest proportion;(3) The plants are distributed unevenly ,most of species at the belt of lower-middling altitude (≤1 500 m);(4) There are six medicinal types,namely Antibacterial type,Anti-parasite type,Digestive system ailment medicine type,Respiratory system ailment medicine type,Urinary system ailment medicine type and External wound medicine type.Based on estimation of capacity of available resource,there are 79 species can be used directly,100 species can be used restrainedly and 35 species must be cons
erved grimly.In view of actual situation on medicinal fern natural resources of Wulingshan region,we think that we must exploit as quickly as possible on one side,and on the other side,we must launch scientific research on the resources.