Position: Home > Articles > Study on Relationship between Glacier Retreat and Climate Change in the Eastern Nyainqentanglha in the Past 40 Years
Research of Soil and Water Conservation
2014,21
(2)
306-310
念青唐古拉山东段八盖乡地区近40年冰川与气候变化研究
作 者：
冀琴;杨太保;李霞
单 位：
兰州大学资源环境学院冰川与生态地理研究所
关键词：
念青唐古拉山东段;遥感;冰川变化;气候变化
摘 要：
基于1970年航空像片和1999年、2011年ETM+数据,利用决策树分类和目视解译方法提取念青唐古拉山东段八盖乡地区关星冰川、麻果龙冰川、若果冰川、江普冰川和那龙冰川的冰川边界,研究了上述5条冰川近40a进退变化及其与气候变化的关系。结果表明:1970—2011年间,研究区5条冰川整体呈萎缩态势,冰川总面积减小了216.52km2,其中1970—1999年各条冰川退缩速率(面积和末端)均大于1999—2011年,冰川退缩具有减缓的趋势,分析研究区附近气象资料可知,降水增加是冰川减缓退缩的主要原因。近40a来研究区5条冰川面积退缩速率和冰川末端海拔呈反相关关系,冰川面积退缩速率随冰川末端海拔升高而降低,江普冰川的末端海拔最低,为3 179m,其退缩速率最大为1.75km2/a,关星冰川末端海拔最高,为4 276m,其退缩速率最小为0.38km2/a。依据丁青站温度和降水数据,对研究区未来十几年冰川变化情况作初步预测,认为研究区冰川将处于加速退缩状态。
译 名：
Study on Relationship between Glacier Retreat and Climate Change in the Eastern Nyainqentanglha in the Past 40 Years
作 者：
JI Qin;YANG Tai-bao;LI Xia;Institute of Glaciology and Ecogeography,College of Earth and Environmental Science,Lanzhou University;
关键词：
eastern Nyainqentanglha;;remote sensing;;glacier change;;climate change
摘 要：
By using the decision tree classification and visual interpretation methods,we investigated the glacier area and terminal changes over the eastern Nyainqentanglha range of Star glacier,Maguo lung glacier,Ruoguo glacier,Jiang and Putin glacier and the dragon glacier during 1970—2011,and analyzed the relationship between glacier shrinkage and climate change.The results showed that the total lost area was 216.52km2 from 1970 to 2011.The rate of retreating differed over different time intervals.The first period(1970—1999)was greater than the second period(1999—2011).The records of Dingqing meteorological stations showed a pronounced precipitation increase,which mainly caused the deceleration of the shrinking.Furthermore,the altitude played an important role in glacier retreat.The elevation of Jiang and Putin glacier was the lowest(3 179m)with the highest retreating rate(1.75km2/a).Star glacier was just opposite.According to the records of temperature and precipitation,the glacier retreat will be accelerated in the next ten years in this region.
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