تجارت بین منطقه ای از مناطق متابولیسم انرژی شهری: یک مطالعه موردی بین پکن-تیانجین-هبی و دیگران در چین

Interregional trade of energy exchanges from urban metabolism perspective fills the gap of regional disparity due to economic development, physical geography, and lifestyle. The integrated development of Beijing-Tianjin-Hebei (Jing-Jin-Ji) urban agglomeration results in actors changes of the three provinces (or municipalities) between provider or receiver from 2002 to 2010, meanwhile, to treat them as Jing-Jin-Ji region, the energy transfer with other seven regions in China also changed. This research will analyze energy flows between Jing-Jin-Ji agglomeration and other regions in China from two perspectives: first, treat Beijing-Tianjin-Hebei as a whole, and to trace the energy processes among Jing-Jin-Ji region and other seven regions; second, see Beijing, Tianjin, and Hebei as three and to analyze the energy exchanges among them three and also the exchanges with other 27 provinces. Each perspective includes the energy exchanges through direct, indirect, and integral processes from 2002, 2007, and 2010. The results show that the flow through multiple paths from the Northern region accounts for more than 25% of total input throughflow from other seven regions, and the Eastern region receives the highest flow and takes a proportion more than 31% of total output throughflow. The flow through multiple paths among Beijing, Tianjin, and Hebei has changed since 2007 due to the industrial restructuring in 2007. After comparing the path flow through one path and multiple paths at two levels, the regional analysis shows the directions of energy flows between Jing-Jin-Ji and other regions, furthermore, the provincial level reflects the details within the region.