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运用林分结构参数混交度、角尺度、大小比数、直径分布、林层数和物种多样性指标,对小陇山百花林场王安沟经营区锐齿栎天然林样地的群落结构特征进行了研究。结果表明:锐齿栎天然林群落的树种组成十分丰富,树种多样性较高,群落中具有构成当地森林群落的主要树种,结构特征为复层异龄林;在水平结构方面群落中,林木个体分布的角尺度均值为0.489,林分内林木整体分布格局属随机分布;群落的树种隔离程度较高,平均混交度为0.598,处于强度和极强度混交的林木比例高达78.6%;群落中树种以胸径作为比较指标的林木个体的优势排列顺序为:白桦>湖北花楸>漆树>锐齿栎>三桠乌药>华山松>少脉椴>鹅耳枥>青榨槭>膀胱果;在垂直结构方面,群落的平均林层数为2.3层,垂直结构复杂,分化明显。
The community structure characteristics of natural Quercus aliena var.mongolica forest in Wangangou Management Area of Baihua Forest Farm in Xiaolongshan were studied by using the parameters of stand structure mix, angle scale, size ratio, diameter distribution, forest layer number and species diversity Study. The results showed that the species composition of Quercus aliena var. Mongolica community is very rich and its species diversity is high. The community has the main species that make up the local forest community, and the structure is characterized by stratified age. In the horizontal structure community, The distribution of the angle of the average value of 0.489, the distribution of forest trees within the distribution of a random distribution; community tree species isolation is higher, the average degree of mixing is 0.598, in the intensity and extreme intensity mixed forest proportion as high as 78.6%; Community tree species The order of the superiority of forest individuals with DBH as comparison index was as follows: Betula franchetiana> Catalpa bungei> Rhus typhina> Sanjiewuyao> Huashania> Lilium asiaticus> Hornbeam> In terms of vertical structure, the average number of forest layers in the community is 2.3 and the vertical structure is complex with obvious differentiation.