Geochemical characteristics and ecological effects of Se and Zn in topsoil in Western Fuling of ChongqingLingling Mao, Heming Tian, Xiong Zhang, Ruigang Zhang, Jinhua Luan, Haitong Zhao, Feng Hu, Changchao Li and Xu LuoE3S Web Conf., 352 (2022) 03022DOI: https://doi.org/10.1051/e3sconf/202235203022