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本文对小兴安岭地区原始枫桦红松林和椴树红松林下木本植物的结合性(Association of Species)应用2×2列联表(Contingency table)及X~2检验作了初步分析。在α=0.05的置信水准下,枫桦红松林中呈一般正联结的植物种对占28.0952％、明显正联结的植物种对占6.666％;一般负联结的植物种对占49.5238％、明显负联结的植物种对占15.7143％。椴树红松林中呈一般正联结的植物种对占25.2308％、明显正联结的植物种对占2.7692％;一般负联结的植物种对占49.2308％、明显负联结的植物种对占22.7692％。 文中根据X~2计算所得的矩阵及植物种间正联结与负联结的程度提出了植物生态种组稳定配置模型的思想。文中还对植物种结合性研究中样方最小面积的方法及根据提出了探讨。同时,讨论了研究植物种间结合性确定在种间关系及营林实验中的意义。
In this paper, the associations of Species of Korean pine and Pinus koraiensis-korean pine forests in Xiaoxing’anling were analyzed by using 2 × 2 contingency table and X 2 test. Under the confidence level of α = 0.05, 28.0952% of the plant species in Pinus koreanus and Pinus koraiensis-Korean pine forest were positive and 6.666% of the plants were positive and positive, respectively. The positive negative associations were 49.5238%, which was obviously negative Linked plant species accounted for 15.7143%. Twenty-two percent of the plant species in the korean pine-and-korean pine forest are generally positively linked, accounting for 2.7692% of the total positive species; 49.2308% of the species are generally negatively linked and 22.7692% of the clearly negatively-linked species of plants. In this paper, based on the matrix calculated by X ~ 2 and the degree of positive and negative connection between plant species, the idea of plant ecological species stable allocation model is put forward. The paper also discusses the method and basis of the smallest area of quadrat in the study of plant species binding. At the same time, the significance of studying the interspecific association of plant species in interspecific relationships and experiment of forest management was discussed.