3Humphreya J W,Hawesb C,Peaceb A J,et al.Relationships between insect diversity and habitat characteristics in plantation forests[J].Forest Ecology and Management,1999,113:11-21.
4Daniele Sommaggio.Syrphidae:Can they be used as environmental bioindicators[J].Agriculture,Ecosystems and Environment 1999,74:343-356.
5Roy H E,Pell J K,Clark S J,et al.Implications of Predator Foraging on Aphid Pathogen[J].Dynamics.Journal of Invertebrate Pathology,1998,71:236-247.