1900-2007 年横断山区部分海洋型冰川变化
收稿日期: 2009-01-24
修回日期: 2009-04-24
网络出版日期: 2009-11-25
基金资助
中国科学院重要方向性项目(KZCXZ-YW-317); 国家自然科学基础人才培养基金冰川学冻土学特殊学科点(J0630966); 国家重点基础研究发展(973) 计划(2007CB411201); 国家自然科学基金重点项目(90511007);中国科学院“西部之光”人才培养计划“西部博士资助项目”(O828A11001); 国家自然科学基金项目(40971019，40801028); 冰冻圈科学国家重点实验室自主项目; 丽江市政府委托项目资助
Changes of Some Monsoonal Temperate Glaciers in Hengduan Mountains Region during 1900-2007
Received date: 2009-01-24
Revised date: 2009-04-24
Online published: 2009-11-25
Supported by
This study was supported a Major Directionality Program of China's Academy of Sciences (KZCXZ-YW-317), a Project for Incubation of Specialists in Glaciology and Geocryology of National Natural Science Foundation of China (J0630966), a National Basic Research Program of China (2007CB411201), a Key Project of the National Natural Science Foundation of China (90511007), a West Light Foundation of China's Academy of Sciences (O828A11001), a Project of the National Natural Science Foundation of China (40971019, 40801028), and the Foundation from The State Key Laboratory of Cryosphere Science and Lijiang City Government
横断山区7 条海洋型冰川近百年进退速度变化呈现出以退缩为总趋势的阶段性变化，具体表现为20 世纪初至1930s 的冰川稳定，1930s-1960s 的冰川后退，1970s-1980s 的冰川稳定或减速后退，20 世纪80 年代中期以来的冰川后退，这与我国、北半球及横断山区同期的气候变化呈明显对应，展现出冷干阶段冰川稳定或前进、暖湿阶段后退的态势，但各冰川的变化幅度因纬度位置、坡向、冰川规模、局地环境等而存在明显差异。1982/83 年大、小贡巴冰 川、海螺沟冰川冰舌段的消融水当量分别为2710 mm、3139 mm和5281 mm，1990/91-97/98期间海螺沟冰川冰舌段的年均消融水当量为6157 mm，比1982/83 年增加了876 mm。2002 年夏季白水1 号冰川的积雪消融量由于表碛覆盖较少表现出明显的随海拔升高而降低的特征，平均消融水当量为1086.25 mm，2008.9.19-10.13 期间白水1 号冰川物质平衡花竿的观测表明，花竿布设区域10 月6 号左右转入物质积累期，期间日均积累深为1 cm，折合水当量5 mm。
李宗省,何元庆,王世金,贾文雄,和献中,张宁宁,朱国锋,蒲焘,杜建扩,辛惠娟 . 1900-2007 年横断山区部分海洋型冰川变化[J]. 地理学报, 2009 , 64(11) : 1319 -1330 . DOI: 10.11821/xb200911004
Since the early 1900s, a tendency for some monsoonal temperate glaciers retreat has been observed in the Hengduan Mountains region. Against the background of climate change, 7 monsoonal temperate glaciers were in a stationary or an advancing state between the 1900s-1930s and the 1960s-1980s, and they were in a retreat state during the 1930s-1960s and from the 1980s to the present, which is consistent with the climatic fluctuations of China, the Northern Hemisphere and Hengduan Mountains region, and these glaciers were steady or advanced when the climate was characterised by cold-dry and vice versa. The variational extent is different among 7 glaciers owing to the locations and scales. The ablation water equivalent of glacier tongue in Dagongba Glacier, Xiaogongba Glacier and Hailuogou Glacier is 2710 mm, 3139 mm and 5281 mm in 1982/83, respectively, and the mean value in Hailuogou Glacier is 6157 mm during 1990/91-97/98, which is 876 mm more than that in 1982/83. The ablation of Baishui Glacier No.1 was in decline with the rise of altitude owing to the less debris cover in the summer of 2002. Based on the mass observation during 2008.9.19-30, the glacier started to accumulate after October 6, and the accumulation depth is 1 cm equal to 5 mm water equivalent per day during 9.30-10.13.
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