Effect of the Seeding-Year Clipping on the Biomass and Regrowth Rate of Grass-Legume Mixed Grassland The competition model of species at different types of habitat and simulation studies and applications Study on the inter-species competition of Sassafras tsumu community in the mid-subtropics and the population density adjustment Interactive system of Delphastus catalinae and its competitor:interspecies competition Effects of selective cutting on intra-and interspecies competitions among major tree species in mixed broadleaved-Korean pine forest.