Study on evolution of 3E system in different economic growth speed—Taking Shandong as an example

Based on the theories of system dynamics, the model of economy-energy-environmental system is constructed in which the relationships of each indicator in economy, energy, environmental systems are analyzed. With the statistical data of Shandong province from 2001 to 2010, development results from 2011 to 2020 of Shandong province 3E system are implied by using Vensim software, and then, by altering some key indicators´ values, the development trends of Shandong province 3E system in different development patterns are simulated. According to different characters of the development patterns, some countermeasures and suggestions are put forward.