文档介绍：应用与环境生物学报 2008,14 ( 4 ): 475~480 2008-08-25
Chin J Appl Environ Biol=ISSN 1006-687X DOI: .
濒危植物桫椤种群生态场研究*
宋萍1 洪伟1** 吴承祯1 封磊2 范海兰1
(1福建农林大学林学院; 2福建农林大学资源与环境学院福州 350002)
摘要通过构建桫椤种群生态场模型,对福建瓜溪桫椤自然保护区内不同地段的桫椤种群生态场特性进行了分析和
讨论. 研究结果显示,在个体数量差异不大的情况下,种群生态场作用的强弱与种群内植株个体的大小具有明显的相
关关系. 地段Q3、Q4、Q5、Q6的桫椤种群以大、中型植株为主,个体生态场作用大,彼此间叠加强烈,形成的种群等势
线较多,具有明显的梯度,呈现疏密不均变化;三维空间势曲面总体水平高,闭合范围大,种群内场作用强烈,作用空
间大. 地段Q1、Q2、Q7、Q8的桫椤种群以小型植株或幼苗、幼株为主,种群场内以个体场为主,或有微弱的叠加场,种
群场等势线少,没有形成梯度;三维势曲面总体水平低,或呈现独立的个体场势面,不发生场叠加,种群内场作用弱,
场波及范围小. 图2 表1 参18
关键词濒危植物;桫椤;种群;生态场;生态势
CLC Q948
Ecological Field of Endangered Alsophila spinulos Population*
SONG Ping1, HONG Wei1**, WU Chengzhen1, FENG Lei2 & FAN Hailan1
(1College of Forestry, 2College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China)
Abstract Ecological field characteristics of Alsophila spinulosa populations in different sites of the Guaxi Alsophila
spinulosa Nature Reserve in Fujian, China were analyzed and discussed through constructing ecological field model. The
results indicated that the ecological field effects were significantly correlative with individual sizes in the populations. In
the populations of sites Q3, Q4, Q5 and Q6 predominated by large or middle-sized individuals, ecological field effects of
individuals were great and superimposed int