城市是能源消费的集中地区,能源影响和制约城市发展水平和速度。目前工业能耗占中国能源消费的70%左右。本文利用一种简单易行的能源分解方法,对99个地级以上城市在2001~2006年问工业能源消费变化量进行分解。结果表明,这一时期中国重工业化程度的加深导致新一轮的工业能源消费的高速增长。经济规模扩大是导致城市工业能源消费增长的主导因素,技术进步是抑制能源消费增长的重要手段,结构效应表现不显著。20~50万人口规模的城市具有最显著的结构效应、技术效应和规模效应。超过这一人口规模范围的城市,其结构效应和技术效应的节能作用随着偏离20~50万人口规模程度的增加而减弱。对超大规模城市而言,人口和工业经济扩张不一定导致工业能源消费持续增长和低效的能源利用,发挥技术节能潜力是关键。
Since the I980s, industrial energy has always been dominating the nation's totat energy consumption. Statistics show that the trend has been strengthened by further industrialization of cities during the past 30 years. Hence, this paper aims to explore the interrelationships between industrial energy consumption and urban development, and finds an efficient mode for urban development from the perspective of energy consumption. A simple and practical method of energy decomposition analysis is proposed in this paper. The changes of industrial energy consumption are decomposed into industrial structure effect, technological effect and economic scale effect. Based on available data from statisti- cal yearbooks, 99 prefecture-level cities of China are chosen as samples and the period spans from 2001 to 2006. The results show that the growing weight of heavy industry, such as metallurgical, chemical and building material industries, has led to a new round of industrial energy consumption growth during this period. Expanding economic scale of cities is the major factor for the sharp increase of industrial energy consumption. The advancement of technology has effectively suppressed industrial energy demands in cities, while the industrial restructuring has little impact on the changes of industrial energy con- sumption. It is also indicated that cities with the population size of 20--50 million have the most effective industrial structure effect, technological effect and economic scale effect. As the deviation from the population size of 20--50 million increases, cities have less efficient industrial structure effect and technological effect for energy conservation. But increasing growths of population size and industrial economy will not definitely lead to sharp growths of industrial energy consumption and 10w efficiency of energy utility, which largely depends on the energy-saving effect of technological potential. Taking Beijing as an example, its high speeds of industrial and population increases in 1999