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首页> 外文期刊>Cold regions science and technology >Quantitative evaluation of glacier change and its response to climate change in the Chinese Tien Shan
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Quantitative evaluation of glacier change and its response to climate change in the Chinese Tien Shan

机译：天山冰川变化及其对气候变化响应的定量评估

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摘要

Glacier melt water is an important water resource in arid regions of central Asia during the dry seasons, and it is very susceptible to climate disturbances. In this paper, based on the glacier datasets of the first and second Chinese Glacier Inventories, the glacier change in the Chinese Tien Shan from 1960s to 2010 was quantify by assessing the Annual Percentages of Area Changes (APAC), Annual Percentages of Volume Changes (APVC), and Equilibrium Line Altitude (ELA). The results indicated that the mean glacier area and mean glacier volume decreased by 0.7% +/- 0.6% per year and 0.83% +/- 0.73% per year in the Chinese Tien Shan during the period of 1960-2010, respectively. The mean ELA increased by 24.87 +/- 126.84 m during the study period. In addition, we also found that the glacier retreat in the Bogda Mountains was the fastest, mainly due to the sensitivity of small glaciers to climate change, with an APAC of -0.86% +/- 0.49% per year and APVC of -1.04% +/- 0.55% per year, and the mean ELA increased by 44.35 +/- 55.07 m. Moreover, increases in both air temperature (in terms of Thawing Degree-Day (TDD) and Freezing Degree-Day (FDD)) and precipitation were found over the study area during the past five decades. However, such increases in precipitation did not result in any significant changes in the ratio of annual snowfall to total precipitation (S/P) across the Chinese Tien Shan Mountains. Hence, the glacier shrinkage mainly resulted from the significant increase in TDD and FDD in the study region.
机译：冰川融水是干旱季节中亚干旱地区的重要水资源，非常容易受到气候干扰的影响。本文基于第一和第二个中国冰川清单的冰川数据集，通过评估年面积变化百分比（APAC），年体积变化百分比（APAC）来量化1960年代至2010年中国天山冰川变化。 APVC）和平衡线高度（ELA）。结果表明，在1960-2010年期间，中国天山的平均冰川面积和平均冰川体积分别下降了0.7％+/- 0.6％每年和0.83％+/- 0.73％每年。在研究期间，平均ELA增加了24.87 +/- 126.84 m。此外，我们还发现，博格达山脉的冰川退缩速度最快，这主要是由于小型冰川对气候变化的敏感性较高，每年的APAC为-0.86％+/- 0.49％，APVC为-1.04％每年+/- 0.55％，平均ELA增加了44.35 +/- 55.07 m。此外，在过去的五十年中，研究区域的气温（以解冻日（TDD）和冷冻日（FDD）计）和降水均增加。但是，这样的降水增加并没有导致中国天山山脉的年度降雪与总降水之比（S / P）发生任何显着变化。因此，冰川的收缩主要是由于研究地区TDD和FDD的显着增加。

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  • 来源
    《Cold regions science and technology》 |2018年第9期|144-155|共12页
  • 作者

    Che Yanjun; Zhang Mingjun; Li Zhongqin; Wang Shengjie; Du Mingxia; Wang Puyu; Wang Jie; Zhou Panpan;

  • 作者单位

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

    Chinese Acad Sci, Tianshan Glaciol Stn, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China;

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

    Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Gansu, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Glacier change; Equilibrium Line Altitude (ELA); Climate change; Chinese Tien Shan;

    机译：冰川变化;平衡线高度;气候变化;天山;

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