应用主成分分析和聚类分析方法对北美、大洋洲、西欧、亚洲、东欧、中东、非洲和拉丁关洲的87个城市的能源消耗和城市空间、交通模式数据进行了分析,寻找影响影响私家车和公共交通能源消耗的主要因素。主成分分析显示.私家车交通和公共交通能耗影响因素不同。而城市密度并不是影响交通能源消耗权重最大的因素。聚类分析显示,全球主要城市能源消耗模式可分为3大类6亚类.城市交通能源消耗情况与城市的空间、交通模式和经济水平有着密切联系。研究结论认为,对我国城市发展而言转换交通模式是减少城市能源消耗的主要途径.同时非机动交通模式的发展对能源消耗的降低起着重要的作用,最后提出了对我国建设低能耗城市的启示.
This paper analyzes the relationship between transportation energy consumption and urban form as well as transportation system to explore the main factors that affect urban transportation energy consumption. The data come from 87 cities in North America, Oceania, Western Europe, Asia, Eastern Europe, the Mid- dle East, Africa and Latin America. Principal component analysis and cluster analy- sis methods are applied to analyze. We found that urban density is not the only important factor which affect urban transportation energy consumption. The factors which impact on the private car and public transport energy consumption are differ- ent. From results of cluster analysis, 87 international cities can be divided into three categories and six sub-categories by transportation energy consumption, urban form and transportation structure. And the higher level of urban economic development, the more energy consumption, but the economic development itself is not the deci- sive factor. From this analysis, it is learnt that some planning implications con- cemed with Chinese cities under the fast motorization and urbanization process. Transport modal shifting away from private car will be very important to reduce energy consumption, so that keeping the higher no-motorized modal split is crucial for the future of Chinese city.