巴山榧树(Torreya fargesii)资源及其保护  

Resources and Conservation of Torreya fargesii

作　　者：周先容[1] 张薇[1] 何兴金[2] 周颂东[2] 余岩[2] 汪建华[1] 

机构地区：[1]长江师范学院,涪陵408100 [2]四川大学

出　　处：《东北林业大学学报》2012年第2期42-46,共5页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(31070166);教育部博士点基金项目(20090181110064);重庆市教委科技项目(KJ091314、KJ111318)资助

摘　　要：在查阅相关文献资料和标本采集记录的基础上,采用实地调查和走访调查相结合的方法,对巴山榧树(Torreya fargesii)资源进行调查研究。结果表明:巴山榧树地理分布较广,间断分布于重庆、四川、贵州、陕西、湖北、湖南、安徽、河南、甘肃等海拔在800～2 700 m的亚热带山区,散生于针阔叶混交林、常绿落叶阔叶混交林、常绿阔叶林、灌丛及沟谷地带,湖北省为巴山榧树分布最为密集的地区。巴山榧树种群数量较多,但各种群分布区域狭窄,种群密度小,开花结实率低,幼苗极少,种群自然更新能力差。应加强巴山榧树种质资源的保护和人工繁育工作。A survey of the resources of Torreya fargesii was conducted based on the relevant literature and data,herbarium specimen records,and a lot of field work.Results show a wide range of natural distribution of T.fargesii,scattered in coniferous and broad-leaved forests,mixed evergreen and deciduous broad-leaved forests,evergreen broad-leaved forests,hillside thickets and ravine forests,or disjuncted in subtropical mountainous areas of Chongqing,Sichuan,Guizhou,Shaanxi,Hubei,Hunan,Anhui,Henan and Gansu at altitudes of 800-2 700 m.The resource of T.fargesii is the most enriched in Hubei Province.In spite of more abundant geographical distribution areas of T.fargesii,most populations maintain a narrow distribution with very small population density,and low seedling recruitment because of low rates of flowering and seed setting,which suggests that the germplasm resource conservation and artificial propagation are necessary to T.fargesii.

关 键 词：巴山榧树 资源 地理分布 生境 保护策略 

分 类 号：S791.53[农业科学—林木遗传育种]