Proceedings international conference on environmental resources management in global region (ICERM 2017) - Adhikari, B R; Lestari, I; Bramono A M C W; Bustomi, A F; Sitoula, N R; Rahmawati, N; Sabda, S; Widiyastuti, A N; Ahyar, M I (Penerbit Fakultas Geografi Universitas Gadjah Mada, 2018)