摘要：In order to study the system simulation optimization of resource and environment effects of circular economy, based on the theory of composite ecosystem, the dynamic model of composite ecosystem is established by using the method of system dynamics and software tools, and the development trend of future system status and main ecological risks are simulated by using the model. Based on the mechanism and characteristics of the ecosystem revealed by the dynamic model and the results of ecological security assessment, the countermeasures and measures for management and protection are put forward. The results show that GDP growth is very fast in the forecast, while net GDP growth lags far behind the GDP. This shows that the loss of environment and resources and natural disasters is also increasing in the process of rapid economic development. Therefore, this kind of economic development is at the cost of excessive pollution of the environment and consumption of resources. Economic development has become a threat to the pressure and security of the entire urban ecosystem. It is necessary to find ways of energy recycling and sustainable economic development.
