引用本文:杜洁,田丽华,马文辉,何平,袁小凤.三峡库区珍稀濒危植物的现状与保护对策[J].西南师范大学学报(自然科学版),1999,24(4):
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三峡库区珍稀濒危植物的现状与保护对策
杜洁,田丽华,马文辉,何平,袁小凤
作者单位
摘要:
三峡库区蕴藏着丰富的珍稀濒危植物资源,据调查统计,库区有国家级珍稀频危植物49种,隶属于34科47属.其中蕨类植物3种,裸子植物11种,被子植物35种.被列为一级重点保护植物的4种,二级保护的23种,三级保护的22种.从它们的生存现状看,有4个濒危种,22个稀有种,23个渐危种.论述了三峡库区珍稀濒危植物的种类与地理分布特点、区系特征及保护现状,它们具有起源古老、组成丰富、区系复杂、成分特有及分布不均等特点.并在分析库区珍稀濒危植物致濒机理和库区保护现状的基础上,提出了相应对策.
关键词:  三峡库区  珍稀濒危植物  保护对策
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On the protection of the resources of rare and endangered plants in Three-Gorge Reservoir Area
杜洁  田丽华  马文辉  何平  袁小凤
Abstract:
Three-Gorge Reservoir Area is rich in rare and endangered plants that belong to 34 families 47 genera. There are 3 pieces of pteridophyte, 11 species of gymnosperm, and 35 species of angiosperm. With regard to the protection grade, 4 species are of grade 1,23 species are of grade 2, and 22 species are of grade 3. As for their existing status, 4 are of endangered species, 22 are of rare species, 23 are of vulnerable. The species, geographical distribution and floristic characteristics and present status of natural protection of rare and endangered plants in Three-Gorge Reservoir Area are de. Some proposals for protecting the resources of these plants are presented or the base of analyzing the endangered causes and present conditions of natural protection.
Key words:  Three-Gorge Reservoir Area  rare and endangered plants  conservation strategies
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