作者单位:Li Zhensheng,Tian Xiaoli(School of resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China)李振生,田晓莉(合肥工业大学资源与环境工程学院,安徽 合肥230009)Liu Deliang(School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China)刘德良(中国科学技术大学地球与空间科学学院,安徽 合肥230026)