Spatial distribution characteristics of phaeozem in Songliao Plain based on RS XING Yu, Wang Jie, Yin Yaqiu, Zhou Yingjie, Yao Weiling and Wang Haiqing E3S Web Conf., 194 (2020) 05016 Published online: 15 October 2020 DOI: 10.1051/e3sconf/202019405016