渐危植物格木的濒危机制及其繁殖特性的研究  

A STUDY ABOUT ENDANGERED MECHANISM OF Erythrophleum fordii

作　　者：黄忠良[1,2] 郭贵仲[1,2] 张祝平[1,2] 

机构地区：[1]中国科学院华南植物研究所鼎湖山生物圈保护区 [2]中国科学院华南植物研究所

出　　处：《生态学报》1997年第6期671-676,共6页Acta Ecologica Sinica

基　　金：中国科学院广州分院;广东省科学院台站基金;国家科委八五重大项目

摘　　要：在调查考察格木的地理分布以及定点监测格木天然林的种群结构和动态、人工林的生长与生境的基础上，研究了格木的生物学和生态学特性及群落特性，并分析了格木成为渐危植物的原因。格木材质优良，人们过度砍伐是其种群数量变小，地理分布变窄的原因之一。格木要求比较特殊的生境，如温暖、光照强、水分条件好，否则生长不良或难以生存。格木的繁殖依赖于种子，但其种子具不透水的坚硬种皮，难以萌发，且易遭病菌和蛀虫为害，因而天然更新能力弱。幼树新梢受蛀虫危害严重。这些是格木成为渐危植物的生物学和生态学原因。rhtyrophleum fordii is a rare species listed in China Plant Red Book.A survey about its geological distribution,habitat specificity and local population size was done and a long term monitoring was done for the population dynamics,size structure and natural regeneration in its nature community in Dinghushan Biophere Reserve.And a study about its growth in different ecological habitats was done.The results showed that this species became a rare species owing to both natural and artificial causes.Excessive cutting resulted in its population decreasing.Natural causes were contributed by its habitats specificity and insect pests,which encroach the seedlings and young trees,especially the seeds.In order to make this species being common and get sustainable use,on the one side,we should protected its habitats and maternal plants,at the same time,we should conduct artificial reproduction with emphasis on insect pest prevention.

关 键 词：珍稀植物 格木 濒危机制 繁殖特性 

分 类 号：Q949.408[生物学—植物学]