Preliminary study on correlation between plant functional groups and meadow moth population in Xilinguole degraded grassland

The correlation between plant functional groups and Loxostege sticticalis population was analyzed in Xilinguole degraded grassland by field investigation and statistical analysis.The results showed that there was a positive correlation between meadow moth larvaes and relative coverage（r=0.92，P0.05）, relative density（r=0.69，P0.05）and relative biomass of annual forbs（r=0.94，P0.05）; There was a positive correlation between meadow moth adults and relative coverage（r=0.60，P0.05）, relative density（r=0.69，P0.05）and relative biomass of annual forbs（r=0.49，P0.05）;There was a negative correlation between meadow moth population density and community characteristics values of perennial grasses, perennial shrubs and subshrubs and perennial forbs.