RT Journal T1 A1 PB Sciences in Cold and Arid Regions FD 2020-12-31 YR 2020 JF Sciences in Cold and Arid Regions JO Sciences in Cold and Arid Regions VO 12 IS 6 SP 491 DO 10.3724/SP.J.1226.2020.00491 K1 LK {http://www.scar.ac.cn/CN/article/article_339.shtml}