“…The studies on UDQ improvement strategies are divided into comprehensive study on UDQ improvement strategies (Lu et al, 2007), single aspect study on UDQ improvement strategies (Zhu et al, 2008) and study on regional UDQ improvement strategy (Liu et al, 2007), etc. Studies on UDQ mainly include urban development quality (Lynch, 1981), healthy city (Vlahov and Galea, 2002), and urban sustainability (Li et al, 2001;Moussiopoulos et al, 2008), comprehensive measurement on urbanization level (Chang and Brada, 2006), and urban comprehensive strength (Li et al, 2001), urban modernization (Zhu et al, 2000) and single factor evaluation, such as studies on quality of life (Diener and Suh, 1997;Shafer et al, 2000), environmental quality (Jasch, 2000) and economic quality (Gafni and Birch, 1995). In the aspect of urbanization development speed, three clear opposing viewpoints of ′rapid urbanization′ (Deng, 1999), ′under-urbanization′ (Hu, 2004 and basic coordination (Chang and Brada, 2006) have been formed in China, and many scholars adopt ′correction method′ (Zhou, 2002), ′model method′ (Chen and Zhou, 2001) and ′characteristic method′ (Bai et al, 2004) based on actual conditions of China to make correction studies on urbanization development speed of China.…”