西藏色季拉山蕨类观赏植物资源及多样性  

Biodiversity of Ornamental Ferns Resources in Mt. Shergyla of Xizang

作　　者：吴彤[1] 汪海霞[1] 方江平[1] 

机构地区：[1]西藏大学农牧学院高原生态所,西藏林芝860000

出　　处：《西部林业科学》2016年第2期98-105,共8页Journal of West China Forestry Science

基　　金：社会科学基金项目"西藏园林植物生态环境效益定量研究(A09036)";国家科技支撑计划项目"藏北退化草地综合整治技术与示范(2011BAC09B03)"

摘　　要：西藏色季拉山是西藏植物物种最丰富的地区之一。通过广泛的标本采集和鉴定,对该区蕨类观赏植物资源及多样性进行了系统的研究,结果表明,(1)该区共有蕨类观赏植物18科23属46种,分别占该区野生观赏植物科、属、种的18.37%、8.46%和6.78%,其中单种科最多,占50.00%,寡种科其次,占44.44%,中型科无,大型科较少,仅占5.56%,与黄土高原、西藏其他地区的相似性程度最高;(2)该区东坡较西坡的蕨类观赏植物资源丰富,以林下、林缘、沟溪边、灌丛等生境的丰富度最高;(3)该区蕨类观赏植物地理分布共8种类型和1个分布区变型,温带成分优势突出,与北温带、旧世界温带、东亚都存在着联系,热带成分次之;(4)该区蕨类观赏植物以观叶型优势最为明显,占总种数的43.78%。研究结果将为该区蕨类植物开发利用提供参考。Mt. Shergyla is one of the most richest areas of plant species area in Tibet Autonomous Region （TAR）. By field investigation and specimen identification, diversity of ornamental ferns in this area were studied. The results shows that, （ 1 ） There are 46 species belonging to 18 families and 23 genera, which are 8.46% , 6.78% and 18.37% of the wild ornamental plants of this area respectively. Among them, the single species family account for 50%, few species family 44. 44%, and large family only 5.56%. The similarity degree of the Loess Plateau and the Tibetan area is the highest ; （2） The eastern slope of this area is richer than the west in terms of ornamental ferns resources, and its richness is higher in some habitats like under trees, forest edge, around ditch stream, and shrub; （3） The geographic distribution type of ornamental ferns in this area is consisted by 8 types and 1 variant distribution with obvious temperate elements; （4） Leaf type is most the advantage type among other types of the ornamental ferns plants, and which account for 43.78% of the whole fern species. This study could provide some references for further sustainable utilization of ferns plants resources in this area.

关 键 词：蕨类 观赏植物 观叶型观赏植物 多样性 色季拉山 

分 类 号：Q949.36[生物学—植物学]