Recent Advances in Researches of Beijing Urban Ecosystems
北京城市生态系统研究与进展

This paper introduces research methods, trains of thought and results of Beijing urban ecosystem research project, in which the relationship among population, economy, natural resources and environment, as well as the tendencies of the systems in the coming years have been studied in a strategical view. However, in the results the contradictions between urban development and environment have been pointed out and some countermeasures proposed.The research project comprises eight aspects, i.e. population, industrial economy, energy resour-system dynamics model and input-output model of water resources system, model of energy resources system, statistical correlation model of industrial structure and environmental quality, and model of industrial structure analysis, have been established by applying system analysis methods. In the meantime, data base of Beijing environmental information has been developed and an atlas including over 100 maps compiled.