The Traits Of Arthropod Community And Relations Between Dominant Pest And Its Natural Enemy In Plum Field

This thesis is selected by myself, strive to discover the traits of arthropod community in plum field and enrich the theoretical foundation for IPM of pests.(1) The arthropod total community was divided into two sub-communities: natural enemies sub-community and pest-neutral insects sub-community as to predator-prey relationship. Components of the communities were analyzed by number of groups, individual numbers and some other ecological indexes and so on. Arthropod got belonged to 68 species of 45 families, the pest-neutral insects sub-community was prominent to total community, its relative abundance was 0.785276 and that of natural enemies sub-community was 0.214724. Dominant concentration, dominance and diversities indexes of every communities were compared and the result was dominant concentration and dominance: pests-neutral insects sub-community >natural enemies sub-community > total community; diversity index was on the other way round: sub-community