Influence of forest stand factors on the amount of Monochamus alternatus Hope
The traps were placed in the Ma′anshan forest farm according to different forest types,and in the same forest type according to different landforms,shade densities,slope directions and the locations of the forest.The results showed that the influence of ground coverage rate(F=16.02,P=0.0003),aspects(P=2.32,F=0.0378) and location of the forest(F=4.29,P=0.0447) on the amount of Monochamus alternatus Hope were significant(P0.05),but the influence of forest types(F=1.67,P=0.1660) and shade densities(F=0.09,P=0.7666) on the amount of M.alternatus were not significant.