武夷山华中樱群落物种组成与结构特征

运用植物群落学研究方法,对武夷山自然保护区华中樱群落的组成及结构进行了研究。结果表明：华中樱群落共有维管植物210种,隶属于89科145属;种—面积曲线说明华中樱群落的最小群样面积为1 100 m2,当取样面积为1 700 m2时物种数趋于饱和;种—多度格局及Raunkiaer频度定律分析均表明,该群落优势种与散生种较多,物种的个体数少及出现频率低。群落层次结构简单,多分布于次生林中或成熟林的边缘地带,各样地的群落种类组成差异较明显。乔木层主要物种为华中樱、毛竹、甜槠、拟赤杨、杉木等,其重要值分别为32.61%、11.87%、10.48%、9.35%和7.66%;灌木层主要物种为阔叶箬竹、格药柃、檵木、细齿叶柃等,重要值分别为13.44%、11.28%、8.23%和6.93%;层间植物较为丰富,草本层植物较少。

Community Composition and Structure Characteristics of Cerasus cordnaria in Wuyishan National Nature Reserve of Fujian

Based on the field investigation on the typical sample plots of Cerasus cordinaria community in Wuyishan national nature reserve,the composition,structure,relatively density,relatively frequency,and important values were analyzed.The results showed that there were 210 species,belong to 89 families and 145 genera in this community.The minimum sampling area,1 100 m2,for the community was determined by the pattern of species-area curve,and the species number was saturated when the sampling area reached at 1 700 m2.The distribution nature of the dominant species and non-dominant species was characterized by species abundance and Raunkiaer frequency law.Community structure seemed to be simple,distributed among the secondary forests or in the marginal regions and very different renewal in the mature forests.Community structure can be divided into four layers.The dominant species in the tree layer were Cerasus cordnaria,Castanopsis eyrei,Phyllostachys pubescens,Alniphyllum fortunei,Cunninghamia lanceolata with the important value(IV) about 32.61%,11.87%,10.48%,9.35% and 7.66% respectively;The dominant species in the shrub layer were Indocalamus latifolius,Eurya muricata,Loropetalum chinensis,Eurya nitida with the IV about 13.44%,11.28%,8.23% and 6.93% respectively.There were few species in the herb layer and many species in the inter-layer.