Evaluating The Water Footprint Of The Energy Supply Of China And Researching For Synergy Effects Of Energy-Water Policy

With the deepening of challenges between energy and water,the research on energy-water nexus and collaborative development is hot spot.In the "13th five-year plan" proposal of China,it is planned to place restrictions on the amount and intensity of energy and water.On this background,the model for the water footprint of the energy supply based on the input-output technology has been built to analyze the water footprint of the energy supply for different years and virtual water flow caused by the energy supply.Then,the model for synergetic management between energy and water based on the system dynamics has been built to analyze the need for implement synergy policy.The results show that there are many regions which supply energy in China facing serious water issues,because of the reverse geographical distribution of energy and water.It is necessary to change the extensive development mode in China and develop the sustainable development policy.Pay more attention to the energy and water management and improve the technology for energy and water use,in order to reduce the amount and intensity of energy and water consumption.Adjust and control the water trade of the energy supply in the perspective of the country,in order to make the energy and water use structure being consistent with the national sustainable development.In the meantime,carried out the "the control of the amount and intensity for energy and water use",strengthening the cooperation of the energy system department and the water resources system department and setting the coordinated development policy for energy and water.