Analysis on agro-ecological landscape pattern in Phaeozem land area in Northeast China. - Yanfen He; Bai Zhang; Xuelin Zhang; Chaoqun Ma (IGARSS, 2003)

The monitoring of land degradation: the change of saline-alkaline land in Jilin Province of China. - Bai Zhang; Haishang Cui; Yanfen He (IGARSS, 2003)