| In this paper, the insect communities were systematically investigated on four species of trees(Platycladus orientalis, Sabina chinensis, Sophora japonica and Pistacia chinensis ) in five scenic spots, including 'Three Kong' scenic spots (the Confucius Family Mansion, the Temple of Confucius and the Cemetery of Confucius), the Temple of Yan hui and the Temple of Zhou gong in Qufu City, Shandong Province in 2003 . According to the principle of community ecology, the structures and the dynamics of the insect community on the main garden plants in the 'Three Kong' scenic spots were analysized. The main conclusions are as follows :1. In "Three Kong" scenic spots, 299,885 insects(including mites and spiders) were obtained, among which 32,820 insects were sampled during investigations and 267,065 were collected by black traps, All the insects obtained belong to 14 orders , 96 families, 347 species, respectively.In the investigation, the pest insects, natural enemies and the neutral insects on Platycladus orientalis forestry, which belong to 2 Classes, 12 Orders, 40 Families, 58 Species in all, were obtained. There were 26 species of pest insects, occupying 44.83%, and 32 species of natural enemies, taking up 55.17%. Among the natural enemies, there are 23 species of predators (39.66%), 4 species of parasites (6.90%), and 5 species of neutral insect(8.62%), respectively. On Sabina chinensis forestry, enemies and neutral insects in the arthropod community, which belong to 2 Classes , 13 Orders , 41 Families , 54 Species, were collected. There were 27 species of pest insects, occuping 50%and 24 species of enemies, taking up 40.74%, including 19 species of predators (35.19 %) , 3 species of parasitoid (5.56 %)and 5 species of neutral insects(9.26 % ), respectively.On Sophora japonica forestry, pests, enemies and neutral insects in the arthropod community, which belong to 2 Classes , 11 Orders , 37 Families , 51 Species, were collected. There were 23 species of phytophagous group (45.10 % )and 24 species of enemies ( 47.06 %), including 20 species of predators (39.22 %) , 4 species of parasitoid (7.84 %)and 4 species of neutral insects(7.84 % ), respectively.The insects species in Pistacia chinensis forestry belong to 2 Classes, 10 Orders , 32 Families , 43 Species. The number of pests was 23, which take up 53.49%. The number of enemies was 15, taking up 34.88%. And the number of parasitoid is 13, occupying 30.23%, that of parasitoid enemies is 2, taking up 4.65%. The number of neutral insects is 5, taking up 11.63%.2. The major pests of the Platycladus orientalis forestry in the five scenic spots were Cinara tujafilina , Oligonychus perditus, Cicadellids, Dendrolimus syffuscus and Parocneria furva. The main enemies were Chrysoperla sinica and Harmonia axyridis. The community richness fluctuated ,but increased in temporal sequence. The community diversity were high,but fluctuated largely under the influence of pesticide. The evenness of community was high relatively,while the ecological concentration was low,and the dominant species didn't appear dominantly. The temporal pattern of the insect community on Platycladus orientalis forestry was divided into 4 groups by using systematic cluster. i.e. {1,13,14,15},{2,3,4,5},{6,8,9,10,11,12} and {7}.3.Oligonychus perditus, Nephotettix cincticeps, Cicadella viridis were the major pests of Sabina chinensis forestry in the five scenic spots. Spiders, ladybird beetles and lacewings were the major enemies. The richness,diversity,evenness and the ecological concentration of the community were almost the same to that of Platycladus orientalis forestry.4. The major pests on Sophora japonica forestry in three scenic spots were Aphis craccivora, cicadellids, fulgorid and lepidopteran insects. The major enemies were lacewings , spiders and ladybird beetles. Aphis craccivora was the dominant species from May to Oct. and Semiothisa cinerearia was dominant from June to August. The ecological concentration was higher than that on Platycladus orientalis.The...
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