地理科学

地理科学 ›› 2012, Vol. 32 ›› Issue (7): 898-904.doi: 10.13249/j.cnki.sgs.2012.07.898

• • 上一篇    

黄河源区多年冻土温度及厚度研究新进展

罗栋梁(), 金会军, 林琳, 何瑞霞, 杨思忠, 常晓丽   

  1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃 兰州 730000
  • 收稿日期:2011-09-22 修回日期:2011-12-17 出版日期:2012-07-20 发布日期:2012-07-20
  • 作者简介:

    作者简介：罗栋梁(1983-),男,湖南邵东人,博士研究生,从事冻土学与气候变化研究。E-mail：luodongliang@gmail.com

  • 基金资助:
    国家自然科学基金委创新群体项目(41121061)资助

New Progress on Permafrost Temperature and Thickness in the Source Area of the Huanghe River

Dong-liang LUO(), Hui-jun JIN, Lin LIN, Rui-xia HE, Si-zhong YANG, Xiao-li CHANG   

  1. State Key Laboratory of Frozen Soils Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
  • Received:2011-09-22 Revised:2011-12-17 Online:2012-07-20 Published:2012-07-20

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49

摘要：

利用新布设的冻土孔及原有冻土资料,分析黄河源区冻土温度和厚度的空间分布。源区实测多年冻土年均地温最低为-1.81℃,冻土最厚74 m,均位于巴颜喀拉山北坡的查拉坪。214国道 (K445-K604段) 沿线多为高温多年冻土 (年均地温> -1℃),但巴山北坡海拔4 520 m、布青山海拔4 300 m以上,年均地温低于-0.5℃。巴山北坡海拔4 610 m、布青山海拔4 420 m以上,年均地温低于-1℃。巴山北坡海拔每升高100 m, 年均地温减少0.47~0.75℃,冻土厚度增加16~25 m;纬度向北增加1°,年均地温减少0.85℃,冻土厚度增加20~30 m。

关键词: 多年冻土, 黄河源区, 214国道, 年均地温, 冻土厚度

Abstract:

Based on data and information from newly set-up and original permafrost boreholes, the permafrost temperature and thickness in the Source Area of the Huanghe River were analyzed. The lowest permafrost temperature at depth of zero annual amplitude (DZZA) (so-called the MAGT) in-situ is -1.81℃, and deepest permafrost is 74 m, both are located on the north slope of the Bayan Har Mountains. Most permafrost along the National Highway No.214 (K445-K604) is warm permafrost (with the MAGT>-1℃). However, with altitude higher than 4 520 m in the north slope of the Bayan Har Mountains, and higher than 4 300 m in the Buqing Mountains, the MAGT is lower than -0.5℃. With altitude higher than 4 610 m in the north slope of the Bayan Har Mountains, and higher than 4 420 m in the Buqing Mountains, the MAGT is lower than -1℃. In the Bayan Har Mountains, the MAGT decreases with altitude at rates of 0.47-0.75℃/100 m, and permafrost thickness increase 16-25 m/100 m. Besides, the MAGT decreases with latitude at rates of 0.85℃ and permafrost thickness increase about 20-30 m per degree.

Key words: permafrost, the source area of the Huanghe River (SAHR), National Highway No.214, permafrost temperatures at zero annual amplitude(MAGT), permafrost thickness

中图分类号: 

  • P642.14