Abstract:As one of the most important fast developed regions, the Beijing-Tianjin-Hebei (BTH) urban agglomeration plays an important role in global development due to its great socio-economic benefits. However, the dramatically fast development causes series of resources and environments problems including serious shortage of resources. Despite broad studies exploring the impacts of urbanization on some particular resources, little is known about the simultaneously combined effects of urbanization on different resources. In this paper, we took the BTH urban agglomeration as a pilot study and simultaneously explored the combined impacts of urbanization on land, water and energy. First, we developed a dynamic index to quantify the interaction between urbanization and resource from the view of resource supply and demand. Second, we investigated the combined impacts of urbanization on different resources. We found that (1) on aggregate level, the interactions between urbanization of the whole BTH and land, water and energy were all mainly "strong concordant" and "weak concordant"; (2) on city level, the interactions between urbanization and land, water and energy varied between different cities, and most cities faced the alternation occurrence of "weak stressed", "strong stressed", "weak concordant" and "strong concordant". Particularly in some cities (Shijiazhuang, Handan, Chengde, Hengshui, Xingtai, Tangshan, and Baoding) in Hebei province, they ever faced "strong stressed" interaction in some years; (3) the combined stressed effects by land, water or energy were found at city level, and most cities within the BTH were stressed by more than one resource in some years. Our findings highlight that it is imperative to comprehensively evaluate the interactions between urbanization and resources from different spatial scales and the nexus of different resources for decision-makers.