3. Result Analysis and Discussions
3.1. Energy Consumption Index
3.1.1. Energy Consumption Level
Figure 1 shows the total and the per capita urban energy consumption in 2005, with case cities arranged from left to right in a descending order of value of total energy consumption with regard to their associated groups of East, Middle and West. In addition, Figure 2 is the spatial distribution of total energy consumption on GIS platform, on which the locations of the 30 case cities as well as the three Chinese economy-zones are clearly indicated. There were great diversities both in total and per capita urban energy consumption level among the 30 cities in 2005. In the absolute terms, Shanghai had the largest total energy consumption of 7.04 × 107 tce, which was dozens of times of that of Haikou with a minimum amount of 0.23 × 107 tce. In consideration of spatial variation, cities with the highest total energy consumption are mostly distributed in economic-developed regions as Beijing-Tianjin-Tangshan Area, Yangtze River Delta and Pearl River Delta of China. Nevertheless, some cities located in Middle or West regions had consumed relatively larger amount of energy, one of which is Chongqing. In 2005, the energy consumption in Chongqing was 3.39 × 107 tce, much higher than those of cities in the East as Jinan and Fuzhou.
3. Result Analysis and Discussions
3.1. Energy Consumption Index
3.1.1. Energy Consumption Level
Figure 1 shows the total and the per capita urban energy consumption in 2005, with case cities arranged from left to right in a descending order of value of total energy consumption with regard to their associated groups of East, Middle and West. In addition, Figure 2 is the spatial distribution of total energy consumption on GIS platform, on which the locations of the 30 case cities as well as the three Chinese economy-zones are clearly indicated. There were great diversities both in total and per capita urban energy consumption level among the 30 cities in 2005. In the absolute terms, Shanghai had the largest total energy consumption of 7.04 × 107 tce, which was dozens of times of that of Haikou with a minimum amount of 0.23 × 107 tce. In consideration of spatial variation, cities with the highest total energy consumption are mostly distributed in economic-developed regions as Beijing-Tianjin-Tangshan Area, Yangtze River Delta and Pearl River Delta of China. Nevertheless, some cities located in Middle or West regions had consumed relatively larger amount of energy, one of which is Chongqing. In 2005, the energy consumption in Chongqing was 3.39 × 107 tce, much higher than those of cities in the East as Jinan and Fuzhou.
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