Review of research fields and research methods of agroecology in recent years

In recent years,active research fields of agroecology included agroecosystem models,sustainable agriculture,ecological agriculture,agricultural diversity,agriculture and global changes,ecological adaptation of crops and weeds,genetic ecology and chemical ecology of crops and weeds,green food production,waste treatment of animal industry,integraded pest management.Methods of systems anslysis are widely used.Artificial intelligent method,artificial nervous systems method and gene algorihm method are introduced to agroecological research and the experimental method of middle type has abstracted a lot of attention.The research of ecology is changing from the description of ecosystems to the understanding of the self-organization mechanism,from the passively forecasting ecological crises to the actively controlling the change.Agroecology will become a more important fields of ecology in the future.