群落结构特征参数对葡萄园节肢动物群落作用的比较

利用主成分分析法，对葡萄园节肢动物群落、植食类亚群落、捕食类亚群落的特征参数进行分析.结果表明，葡萄园节肢动物群落、植食类亚群落、捕食类亚群落特征向量矩阵中第1主分量综合指标贡献率依次为66.70%、73.39%和54.17%.节肢动物群落的总个体数N、Hill多样性指数N₁、Hill多样性指数N₂和McIntosh指数D_mc的标准回归系数绝对值较大，对群落贡献大；植食类亚群落的N、N₂、N₁和物种数S的标准回归系数绝对值较大，对植食类亚群落贡献大；捕食类亚群落的N₂、N₁、Shannon-Wiener多样性指数H'和丰富度R的标准回归系数绝对值较大，对捕食类亚群落贡献大.综合分析，多样性指数N₁和N₂对3种类型群落贡献较大.

Structural characteristics of arthropod community in grapery

By the method of principal component analysis, this paper analyzed the characteristic parameters of arthropod community and its phytophagous and predacious sub-communities in grapery. The results showed that in the first principal component, the contribution of arthropod community, phytophagous sub-community and predacious sub-community was 66.70%, 73.39% and 54.17%, respectively. For arthropod community, the absolute values of normalized regressive coefficients of individuals' number N, Hill diversity index N1, Hill diversity index N2 and McIntosh index D(mc) were larger, indicating their greater contribution on the community. For phytophagous sub-community, N, N1, N2, N and S (total species) had greater contribution; while for predacious sub-community, the greater contribution was made by N1, N2, Shannon-Wiener diversity index H' and abundance R. Synthetically, N2 and N1 had greater contribution on the arthropod community and its phytophagous and predacious sub-communities in grapery, comparing with other characteristic parameters.