Abstract: The insect pest and natural enemy communities in Red Fuji apple orcha rd in Mouping District of Yantai City were quantitatively analyzed by multivariat e analysis. The temporal structure of the communities was grouped into five cont inuous stages by using optimal sorting method, and the community characteristics at each stage were described. The dominant pests and natural enemies were deter mined at different growth stages of apple trees through analyzing the sub-commu nities of the insect pests and the predatory and parasitic enemies by principal component analysis and factor analysis. Canonical correlation analysis showed th at there were significant correlations between the dominant insect pests and the dominant natural enemies, especially between Lithocolletis ringoniella and its parasitoids, between Aphis citricola and its parasitoids, and between Tetr anychus viennensis and its obligatory predatory enemies, Stethorus punctillu m and Amblyseius orientalis.

Key words: coupling model, coupling degree, harmonious development, spatial disparity.