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Journal of Desert Research ›› 2021, Vol. 41 ›› Issue (1): 111-118.DOI: 10.7522/j.issn.1000-694X.2020.00116

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Characteristics of ultraviolet radiation and global radiation in alpine desert: a case of Hulun Buir Sandy Land

Binbin Zhu1,2(), Shuanghong Sun1,2(), Yanhong Li1,2, Honglei Zhang1,2, Lu Jing1,2, Lijun Wang1,2, Wei Cao3   

  1. 1.Institute of Forestry Science in Hulun Buir,Hailar 021000,Inner Mongolia,China
    2.Station of Observation and Study on the Ecosystem of Hulun Buir Sandy Land in Inner Mongolia,Ewenke 021100,Inner Mongolia,China
    3.Center of Productivity Promotion in Hulun Buir,Hailar 021000,Inner Mongolia,China
  • Received:2020-08-31 Revised:2020-10-24 Online:2021-01-29 Published:2021-01-29
  • Contact: Shuanghong Sun

Abstract:

Based on the data of solar radiation from Ewenke autonomous area of Hulun Buir Sandy Land in 2019, the characteristics of ultraviolet (UV) radiation and global radiation were analyzed. The results showed that the annual variation phases of UV radiation and global radiation were same, basically. The annual total values of UV radiation and global radiation were 240.33 MJ·m-2 and 5 142.41 MJ·m-2, and daily total values of UV radiation and global radiation were 0.66 MJ·m-2 and 14.09 MJ·m-2, respectively. The total value of UV radiation was less than that in Lhasa. The maximum instantaneous UV radiation (50.09 W·m-2) and global radiation (1 075 W·m-2) emerged in June, and the minimum instantaneous of that emerged in December. The order of UV radiation and global radiation was summer>spring>autumn>winter. The results showed that sandstorm had the most obvious weakening effect on solar radiation, which reduced UV radiation and global radiation by 78.46% and 76.19%, respectively, and rainfall had little weakening effect. The proportion of daily average UV radiation exposure in global radiation was mainly concentrated in 3.42%-4.95%, with an average annual value of 4.64%, which was larger than that in Xiaotang area of Taklimakan Desert.

Key words: UV radiation, global radiation, Hulun Buir Sandy Land

CLC Number: