Analysis of Spatial Correlations Among Water,Energy and Carbon Systems at Different Scales
In order to cope with the impact of climate change and resource pressure,it is of great significance to research the relationship between water,energy and carbon emission system to promote the coordinated development of ″resource,environment,and society″ and promote the process of green and sustainable development.The multi-regional input-output model is used to analyze the changes and correlation of water,energy,and carbon system in China from three scales.The results are as follows.The center of gravity of China's spatial transfer of water resources,energy and carbon emissions is lo-cated in the eastern region.The flow of inter-provincial water footprint,energy footprint and carbon footprint trade in the path of industrial correlation is decreasing,but the increase of international trade water footprint is not conducive to impro-ving the imbalance of water resources distribution in China.The total energy consumption per 10000 yuan of output value in the water production sector in 30 provinces in China has remained at a relatively stable and low level.Full energy use ef-ficiency is higher than direct energy use efficiency.Full carbon emissions per 10000 yuan of output are higher than direct carbon emissions in most cases.The vast majority of provinces are more efficient in terms of direct and total carbon emis-sions.Direct and complete water use and carbon emissions per 10000 yuan of output are on a downward trend in all five energy production sectors.Electricity and heat production and supply is consistently the sector with the highest direct and complete water use and carbon emissions,and direct water use and carbon emissions are higher than complete water use and carbon emissions.
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