| 近40a来基于树轮年代学的梅里雪山明永冰川变化研究 |
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| 引用本文： | 蓝永如,刘高焕,邵雪梅.近40a来基于树轮年代学的梅里雪山明永冰川变化研究[J].冰川冻土,2011,33(6):1229-1234. |
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| 作者姓名： | 蓝永如 刘高焕 邵雪梅 |
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| 作者单位： | 1. 中国科学院研究生院,北京100049／中国科学院地理科学与资源研究所资源,北京100101
2. 中国科学院地理科学与资源研究所资源,北京,100101 |
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| 基金项目： | 国家科技基础性工作专项项目计划(2008FY110300);澜沧江中下游与大香格里拉地区科学考察资助 |
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| 摘 要： | 由于冰川观测资料在时空分布上的匮乏,关于梅里雪山地区冰川进退的研究很少,限制了对该区冰川进退的时间和规模及其与气候间相关性等方面的认知.树轮年代学方法作为冰川进退历史定年的有效手段,在世界上已经被广泛采用.通过对采自冰川末端冰碛上的树轮样本进行分析,利用GIS结合地形图与野外GPS点冰川边界确定,研究和分析了明永冰川年...
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| 关 键 词： | 树轮冰川学 树轮年代学 海洋型冰川 冰川进退 |
Variation of the Melang Glacier in Mount Kawa Karpo in the Past 40 Years,Based on Dendrochronolog |
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| Institution: | LAN Yong-ru1,2 LIU Gao-huan2 SHAO Xue-mei2 (1,Graduate University of Chinese Academy of Sciences,Beijing 100049,China;2,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China) |
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| Abstract: | In Mount Kawa Karpo,the variation of glaciers,as well as the correlation between glaciers and climate change,is rarely known,because there is lack of data about spatial and temporal variation of glaciers,and less research about the variation has been done.Dendrochonology is a world-famous tool to reconstruct glacier fluctuation.In this study,the tree-ring samples from the moraine by the glacier terminus are analyzed,and then variation of the Melang Glacier in the past 40 years is determined by means of topographic map and latest GPS boundaries in GIS.Using the dendrochronology,the age of Picea likiangensis living on the moraine by the glacier terminus and the forming age of the moraine are determined.It is found that the latest event about glacier variation occurred in 1987,after a topographic map being completed in 1971.Derived from the ages of spruces living inside and outside the moraine,it is believed that from 1987 to 1993 the glacier terminus had existed stably at the position where spruces begun to grew in 1998.Because the youngest tree has grown,it is inferred that the glacier retreated about 1993.There is a glacier close to the Melang Glacier,whose terminus was thought at the steady state until 1959,and in the GIS map of 1971,the glacier terminus is outside the area where trees live. |
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| Keywords: | dendroglaciology dendrochronology maritime glacier glacier advance and retreat |
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