PROGRESS IN GEOGRAPHY ›› 2019, Vol. 38 ›› Issue (12): 1933-1943.doi: 10.18306/dlkxjz.2019.12.009

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Change of ice phenology in the Hulun Lake from 1986 to 2017

WU Qihui, LI Changyou, SUN Biao*(), SHI Xiaohong, ZHAO Shengnan, HAN Zhiming   

  1. Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2018-08-27 Revised:2019-06-06 Online:2019-12-28 Published:2019-12-28
  • Contact: SUN Biao
  • Supported by:
    National Natural Science Foundation of China(51869020);National Natural Science Foundation of China(51779118);Natural Science Foundation of Neimenggu Province(2017BS0510)


Lake ice phenology is a sensitive indicator of climate change. This study examined lake ice phenology of the Hulun Lake in Inner Mongolia, China based on multi-source remote sensing imageries including MODIS, Landsat, GF-1, and HJ-1 and meteorological data. We used GIS technology to comprehensively analyze the phenological characteristics of ice in the Hulun Lake and its response to regional climate from 1986 to 2017. The results show that: 1) The average freezing time of the Hulun Lake began in late October to early November, and the average time from freezing to complete freezing was 6.4 days. The melting start was usually in early April of the following year, and the ablation period averaged about 32 days. At the beginning of early May, the lake ice completely melted. 2) From 1986 to 2017, the complete freezing period of the Hulun Lake showed a significant shortening trend, with an average shortening of 18.5 days. The complete freezing time showed some delay, with an average delay of 8.4 days. The complete ice melting time advanced, with an average advancement of 11.2 days. 3) The spatial characteristics of freezing and melting of lake ice are different. Freezing starts from the complex shoreline areas of the lake, then rapidly propagate from the east coast to the west coast, but melting starts from the northwest coast of the lake and gradually spread toward the east shore. 4) The characteristics of ice conditions in the Hulun Lake are mainly affected by regional air temperature, wind speed, wind direction, among other factors.

Key words: lake ice, multi-source remote sensing, temporal and spatial changes, phenology, Hulun Lake