1Department of International Studies, Division of Environmental Studies, Graduate School of Frontier Sciences,
University of Tokyo, Kashiwanoha 277-8563, Japan
2Adıyaman University, Technical Programs, 02040, Adıyaman, Turkey
3Department of Soil Science, University of Çukurova, 01330, Adana, Turkey
4Department of Economics, Çağ University, Mersin, Turkey
Pol. J. Environ. Stud. 2010;19(6):1109–1116