A citizen data-based approach to predictive mapping of spatial variation of natural phenomena. - A-Xing Zhu; Guiming Zhang; Wei Wang; Wen Xiao; Zhi-Pang Huang; Ge-Sang Dunzhu; Guopeng Ren; Cheng-Zhi Qin 001; Lin Yang 018; Tao Pei; Shengtian Yang (Int. J. Geogr. Inf. Sci., 2015)