[1] Natl Pingtung Univ Sci & Technol, Dept Environm Sci & Engn, Neipu 91201, Pingtung, Taiwan
[2] Tajen Univ, Dept Environm Resources Management, Enpu 90741, Pingtung, Taiwan
[3] Natl Pingtung Univ Sci & Technol, Grad Inst Disaster Prevent Hillslopes & Water Res, Neipu 91201, Pingtung, Taiwan
[4] Natl Pingtung Univ Sci & Technol, Dept Civil Engn, Neipu 91201, Pingtung, Taiwan