1. Department of Natural Resources and Environmental Studies, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd. Shoufeng, Hualien 97401, Taiwan
2. Institut Teknologi Nasional, Jl. Babarsari, Caturtunggal, Depok, Sleman, Yogyakarta 55281, Indonesia
3. Department of Applied Economics, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City 402, Taiwan
4. Department of Environmental Engineering, Faculty of Infrastructure Planning, Universitas Pertamina, Jakarta 12220, Indonesia
5. Center for Interdisciplinary Research on Ecology and Sustainability, College of Environmental Studies and Oceanography, National Dong Hwa University, Hualien 97401, Taiwan