Surface-area changes of glaciers in the Tibetan Plateau interior area since the 1970s using recent Landsat images and historical maps
Surface-area changes of glaciers in the Tibetan Plateau interior area since the 1970s using recent Landsat images and historical maps
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DOI：
10.3189/2014aog66a038
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发表时间：
2014
影响因子：
2.9
通讯作者：
Junfeng Wei;Shiyin Liu;Wanqin Guo;Xiaojun Yao;Xu Junli;Wei-jia Bao;Zong-li Jiang
中科院分区：
文献类型：
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作者：
Junfeng Wei;Shiyin Liu;Wanqin Guo;Xiaojun Yao;Xu Junli;Wei-jia Bao;Zong-li Jiang
青藏高原内部地区，通常被称为羌塘高原，以许多高于6000年的圆顶状山脉而闻名。这些山脉为极端大陆/亚极地类型的冰盖和冰川的形成提供了有利条件。根据历史地形图（1959- 1980年）和最近的陆地卫星图像（2004-11年），观察到持续退缩，该地区的冰川化部分减少了9.5%（0.27%a-1），相对于20世纪70年代的8036.4 km 2的冰川总面积。扎日纳木错盆地的冰川面积缩减最大，缩减率为0.72%a-1，班公错和多盖错英盆地的冰川面积缩减最小，分别为0.12%a-1和0.11%a-1。高原南部的面积减少幅度较大，北部的面积减少幅度较小。比较表明，TPIA的冰川收缩比周边地区要小。青藏高原冰川收缩主要是由于气温升高，降水、冰川大小和冰川作用的正差异也起了重要作用。
Abstract The Tibetan Plateau interior area (TPIA), often termed the Qangtang Plateau, is distinguished by many dome-like mountains higher than 6000 ma.s.l. These mountains provide favourable conditions for the development of ice caps and glaciers of extreme continental/subpolar type. According to historical topographic maps (1959–80) and recent Landsat images (2004–11), continuous retreat was observed and the glacierized part of this area decreased by 9.5% (0.27% a–1) with respect to the total glacier area of 8036.4 km2 in the 1970s. Glaciers in the Zhari Namco basin have experienced the highest area shrinkage, with a reduction rate of 0.72% a–1, while the smallest reduction occurred in Bangong Co (0.12% a–1) and Dogai Coying basins (0.11% a–1). A regional gradient of area loss was found, with a larger decrease in the south and a smaller decrease in the north of the plateau. Comparisons indicate glaciers have experienced smaller shrinkage in the TPIA than in surrounding regions. Glacier shrinkage in the TPIA is mainly attributed to an increase in air temperature, while precipitation, glacier size and positive difference of glaciation also played an important role.