摘要
本文以莲座蕨属5种珍稀濒危植物为研究对象,通过野外调查和数据统计,绘制了5个种的种群高度、丛径、叶柄数和马蹄数结构图,在此基础上编制了圆基莲座蕨和阔羽莲座蕨种群特定时间生命表,分析了存活曲线等重要参数。结果表明,圆基莲座蕨种群结构稳定,阔羽莲座蕨种群结构相对稳定,但受人为干扰较大;秦氏莲座蕨、二回莲座蕨种群目前仍表现为稳定型种群,但种群数量较少,容易受环境胁迫和人为干扰;法斗莲座蕨植株数极少,种群结构极不稳定,已濒临灭绝。5种莲座蕨均需就地保护和迁地保护,特别是法斗莲座蕨和二回莲座蕨亟需通过人工抚育来恢复种群数量,以实现抢救性保护。
Taking 5 rare and endangered species of Angiopteris （Marattiaceae） as research subject, specific lifetime table of Angiopteris subrotundata and Angiopteris latipinna population was drawn and key parameters such as survival curve were analyzed based on structure charts of population heights, cluster diameters, petiole numbers and horseshoes drawn by sample plot survey and statistics data. The results showed that population structure of Angiopteris subrotundata was stable, and that of Angiopteris latipinna was relatively stable but influenced by human disturbance. The population structure of Angiopteris chingii and Angiopteirs bipinnata were also stable but their population number were less and vulnerable to environmental stress and human disturbance. Population quantity of Angiopteris sparsisora was extreme low and its population structure was in a quite unstable situation even to species ex- tinction. This study indicated that all these 5 Angiopteris species are needed to take in situ and ex-situ conservation actions, and especially for Angiopteris sparsisora and Angiopteris bipinnata.
出处
《西部林业科学》
CAS
2016年第2期52-57,共6页
Journal of West China Forestry Science
基金
国家自然科学基金"合囊蕨科5种中国特有珍稀濒危莲座蕨保护生物学研究(31260078)"
