“…In the first stream, research has focused on the accounting of environmental pressures for cities where urban metabolism (Chen and Chen, 2015b;Chen and Wang, 2014;Niza et al, 2009;Wolman, 1965) played an important role. In this research stream environmental pressures are accounted in many aspects by various methods and metrics , such as energy consumption (Chen and Chen, 2015a), greenhouse gas emissions (Tian et al, 2013), pollutant or waste discharge (Zhao et al, 2010), water consumption , emergy (Zucaro et al, 2014), and exergy (Jiang and Chen, 2011). In the second stream, research has focused on exploring the driving forces of environmental pressures in cities.…”