Influences Of Wild Plant On Insect Community Diversity On Shijiazhuang-Anyang Highway

Based on the environmental virescence of road and environmental factor, the wild plants were introduced into on Highway, which were Vitexnegundo varhetero-phyiia. In order to ascertain the dynamic variety of the insect community on Highway and the wild plant insect community and the effects of wild plant on the diversity of insect community, according to the principle of community ecology, we researched the insect community structure of the four sample types and wild plant insect community structure and change rules of the insect community diversity. Based on the analysis of principal component and cluster, we researched the mechanism of effects of wild-plants on insect community diversity. The results of research are showed as follows.95 species of insects belonging to 9 orders, 55 families, 89 species in the class Insecta and 3 families, 6 species in the class Arachnid, which included 10308 insects belonging to 9 orders, 43 families, 68 species in the class Insecta and 1 orders, 1 families, 1 species in the class Arachnid on the insect community of wild-plants, and 6558 insects belonging to 9 orders, 49 families, 71 species in the class Insecta and 1 orders, 3 families, 4 species in the class Arachnid on the insect community of compare-plant.There are many differences between species and individual numbers of the insect community in the four different types of greening plants on Shi-An Highway. From the species of insect community, the greening plant of the side slopes are the most species, the greening plant of the shield slopes comes next, and the species of the side channel are the least. The dominant concentration of the many insect group in the four different vegetation types are not consistent in different time process. As time goes on, the dominant concentration of the same insect group have a significant variety. By the comparison of species diversity indexes of the traditional plant, the wild plant, the weed, the marginal protection forest was showed: diversity index of the traditional plant >diversity index of the wild plant >diversity index of the marginal protection forest >diversity index of the weed.By the comparison of individuals of the natural enemies sub-community and pest sub-community, the result was showed: individuals of the pest sub-community individuals of the matural enemies sub-community. Based on the analysis of the many community ecological index about the insect community of the wild plant, which including dominat concentration index, diversity index, dominance index et. , the result follows as:the dominant concentration index and dominance index of the pest sub-community > the dominant concentration index and dominance index of the total community > the dominant concentration index and dominance index of the natural enemies sub-community.There are significant difference between species and richness in the insect community of the wild plants and the control plants, furthermore, the insect species of the control plants > the insect species of the wild plants; the insect individuals of the wild plants > the insect individuals of the control plants. The dominant concentration of the insect total community in the wild plants > the dominant concentration of the insect total community in the control plants, the dominant concentration of the pest sub-community in the wild plants > the dominant concentration of the pest sub-community in the control plants, the dominant concentration of the natural enemies sub-community in the wild plants < the dominant concentration of the natural enemies sub-community in the control plants. From the Evenness of the insect community, the insect total community and the pest community of the wild plants < the insect total community and the pest community of the control plants, the evenness of the natural enemies community in the wild plants > the evenness of the natural enemies community in the control plants. Based on the relationship of between community diversity and stability, the stability of the control plants have more stronger than the wild plants.By the comparision of between the wild plants and the control plants, the comparability of between the natural enemies sub-community of the wild plants and the control plants are the biggest, and the comparability of between the pest sub-community of the wild plants and the control plants are the smallest. From what has been analyzed above, we may comes to the conclusion that the difference of the pest sub-community results in the insect community difference of between the wild plants and the control plants. From the species of the natural enemies sub-community and the neutral insect community, there are a little significant difference between the wild plants and the control plants, in other words, the effects of the wild plants on the natural enemies sub-community and the neutral insect community is non-evidence.By the principal component analysis of the insect community of between the wild plants and the control plants, the results showed that the many group of the insect community in the control plants reached equilibrium, as time goes on, the variety of the insect community in the control plants had more stabilizer than which in the wild plants.By the comparision of between the wild plants and the marginal protection forest, the insect community diversity of the wild plants has more higher than the marginal protection forest, the diversity standard deviation of the wild plants has more higher than the marginal protection forest. By the comparision of the diversity standard deviation of the three different marginal types, the result shows as follows: peach forest > willow forest > populus forest. It shows that the change of the insect community diversity are relatively...