“…Studies have applied various indicators for the purpose of assessing sustainability (for example, Singh and others, 2009;Lawn and Clarke, 2010). Some of the most widely used indicators on the income-environment nexus are genuine savings, otherwise known as adjusted net savings (Hamilton and Clemens, 1999;Nourry, 2008;Mota, Domingos and Martins, 2010;Asici, 2013;Kubiszewski and others, 2013;Greasley and others, 2014); green national net product (Nourry, 2008;Mota, Domingos and Martins, 2010); the system of environmental-economic accounting (Dietz and Neumayer, 2007); the index of sustainable and economic welfare (Nourry, 2008); the ecological footprint (Parker, 1998;Wackernagel and others, 2004a;Lammers and others, 2008;Nourry, 2008;Hubacek and others, 2009;Begum and others, 2009;Galli and others, 2012;Wang, Chou and Lee, 2012); the environmental sustainability index (Pillarisetti and van den Bergh, 2007;Hara and others, 2009); the environmental performance index (Yale Centre for Environment Law and Policy, 2010); the environmental vulnerability index (Kaly, Pratt and Mitchell, 2004;Barnett, Lambert and Fry, 2008), etc.…”