A PRELIMINARY STUDY ON THE SPATIAL DISTRIBUTION PATTERN OF HEMIBERLESIA PITYSOPHILA TAKAGI

seven methods were used to test the spatial distributin patterns of population of Hemiberlesia pitysophila Takagi in the young plantations of Pinus massoniana.The results showed that the distribution patterns of H.Pitysophila belongs to an aggregated distrbution.Variance analyses were used to statistics the insect population on different position and stratification levels of the tree crown.The results showed there was no significant difference in the test.