海南霸王岭热带山地雨林林隙幼苗库动态规律研究  

Studies on the Dynamics of Seedling Bank in Gap of Tropical Montane Rain Forest in Bawangling, Hainan Island

作　　者：陶建平[1] 臧润国[1] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所,北京100091

出　　处：《林业科学》2004年第3期33-38,共6页Scientia Silvae Sinicae

基　　金：国家自然科学基金资助项目 ( 3 0 0 70 60 2 )

摘　　要：分析了海南岛霸王岭自然保护区热带山地雨林林隙内树种的种类组成、数量动态以及林隙年龄和林隙面积对树种组成及数量的影响。结果表明 :热带山地雨林林隙树种组成十分复杂 ,数量分布极不均匀 ,种间差异较大 ,2 7个林隙中共有乔木 116种 ,其中数量较多的 10个种的个体数量占到总个体数量的 4 7 0 3% ,而个体数量较少的 5 8个种的个体数仅占总个体数的 6 0 2 %。林隙面积大小对树种幼苗的种类组成和数量有较大影响 ,幼苗种密度和个体密度随林隙面积的增大而减小 ;幼树和成树在不同大小林隙中的种密度和个体密度变化不大。成熟林隙明显比早期林隙和中等年龄林隙有较大的幼苗个体密度和种密度 ,不同年龄林隙内幼树和成树的个体密度变化也不大。幼苗向幼树的转化率在大林隙和成熟林隙内明显高于小林隙和幼龄林隙。依据林隙树木幼苗数量变化的差异 ,可将林隙填充者分为 4种不同类型。Species composition, quantitative dynamics and effects of gap age and gap size on species compositions were studied in the tropical montane rain forest of Bawangling Natural Reserve, Hainan Island. The results show that the species compositions of gap fillers in tropical montane rain forest are complex and the individual numbers are not uniform among species. There are 116 species in 27 gaps, in which 10 species with larger individual numbers account for 43.03% of all individual numbers, but 58 species with few individual numbers only account for 6.02% of all individual numbers. Gap size makes significant effects on the species composition and number of seedlings; seedling individual density and seedling species density decrease with the increasing of gap size. Few differences are found in density of saplings and mature trees in different size gaps. Seedlings have visible higher individual density and species density in mature gaps than in young gaps and in middle age gaps. The transition rate of seedlings to saplings is higher in large and mature gaps than in small and young gaps. Tree species can be classified into 4 groups according to the quantitative dynamics of tree seedling in different gaps.

关 键 词：海南岛霸王岭自然保护区 热带山地雨林 林隙 幼苗库 动态变化 

分 类 号：S718.54[农业科学—林学]