乌鲁木齐河源空冰斗径流增大的原因分析

doi:10.7522/j.issn.1000-0240.2003.0070

冰川冻土 ›› 2003, Vol. 25 ›› Issue (4): 389-393.doi: 10.7522/j.issn.1000-0240.2003.0070

乌鲁木齐河源空冰斗径流增大的原因分析

韩添丁, 李忠勤, 叶柏生

中国科学院寒区旱区环境与工程研究所, 甘肃, 兰州, 730000

收稿日期:2002-11-11 修回日期:2003-02-06 出版日期:2003-08-25 发布日期:2012-04-26
作者简介:韩添丁(1964- ),男,甘肃武山人,助理研究员,1987年毕业于兰州大学地理系,现为中国科学院寒区旱区环境与工程研究所在职博士生,主要从事冰川水文气象的观测研究.E-mail:tdhan@ns.lzb.ac.cn
基金资助:
国家自然基金重大项目(90202013);中国科学院寒区旱区环境与工程研究所知识创新工程项目(CACX210017;CACX210091);中国科学院知识创新工程重大项目(KZCX1-10-06)资助

Increasing in Runoff in the Ice-free Cirque at the Headwaters of the Ürümqi River

HAN Tian-ding, LI Zhong-qin, YE Bai-sheng

Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China

Received:2002-11-11 Revised:2003-02-06 Online:2003-08-25 Published:2012-04-26

摘要/Abstract

摘要： 天山乌鲁木齐河源区空冰斗径流量自20世纪80年代中期以来增大趋势明显,尤其是1996年以来径流量一直维持在较高水平,远大于前十几年的平均值. 分析其主要原因为:河源区降水自1985年以来呈增加趋势,1996年以来降水明显增多; 气温自20世纪80年代以来总体呈上升趋势,其中1997-1999年气温升高显著,河源区处于一个明显的向暖湿阶段的转变过程中. 同时,冻土活动层内温度的升高,导致冻土活动层内地下冰和地下埋藏冰强烈消融,也是径流量增大的重要原因之一.

关键词: 空冰斗, 径流增加, 降水, 温度

Abstract: Strong signals of climatic shift from warm-dry to warm-humid have been seen in the western part of the Tianshan Mountains of China and their neighboring regions since 1987. Runoff from the ice-free cirque has increased continuously at the headwaters of the Ürümqi River in the Tianshan Mountains since the mid 1980s, especially since 1996, the runoff has stood at a high level, higher than the mean level over the past ten years. The main reasons are: Precipitation has increased continuously at the headwaters since 1985, especially since 1996; Temperature has appeared an increasing trend since the 1980s, mainly from 1997 to 1999; Increase of temperature in permafrost active layers brings about a strong thawing of ground ice. All factors mentioned above cause an increase in runoff.

Key words: Ice-free Cirque, increase in runoff, temperature, precipitation

中图分类号:

P343.6

韩添丁, 李忠勤, 叶柏生. 乌鲁木齐河源空冰斗径流增大的原因分析[J]. 冰川冻土, 2003, 25(4): 389-393.

HAN Tian-ding, LI Zhong-qin, YE Bai-sheng. Increasing in Runoff in the Ice-free Cirque at the Headwaters of the Ürümqi River[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2003, 25(4): 389-393.

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乌鲁木齐河源空冰斗径流增大的原因分析

Increasing in Runoff in the Ice-free Cirque at the Headwaters of the Ürümqi River

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