Variation trends of freezing and thawing index in North Xinjiang from 1961 to 2017
HE Binbin, SHENG Yu, HUANG Long, HUANG Xubin, ZHANG Xiyan
Journal of Glaciology and Geocryology . 2019, (5): 1107 -1114 .  DOI: 10.7522/j.issn.1000-0240.2019.0322