“…It considers both qualitative as well as quantitative information and combines them by decomposing ill-structured problems into systematic hierarchies to rank alternatives based on a number of criteria (Chen et al, 2007). It has been applied in many fields of research, including nature, economy and society (Krajnc and Glavic, 2005;Lai et al, 2012;Lie et al, 2004;Ramanathan and Ganesh, 1995). The AHP is also a means of eco-environment quality evaluation, the ecological environment being a large and multi-layer system (He et al, 2004;Hill et al, 2005;Janseen, 2001;Kang, 2002;Klungboonkrong and Taylor, 1998;Kurttila et al, 2000;Solnes, 2003;Yedla and Shrestha, 2003).…”