1. Associate Professor, College of Resources and Environmental Science, Ningxia Univ., Yinchuan 750021, China (corresponding author). ORCID: .
2. M.S. Candidate, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
3. M.S. Candidate, College of Resources and Environmental Science, Ningxia Univ., Yinchuan 750021, China.