地理科学 ›› 2016, Vol. 36 ›› Issue (12): 1937-1944.doi: 10.13249/j.cnki.sgs.2016.12.020

• 论文 • 上一篇    

念青唐古拉山脉西段雪线高度变化遥感观测

张其兵1,2(), 康世昌2,3, 张国帅3   

  1. 1.湖南文理学院资源环境与旅游学院,湖南 常德 415000
    2.中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,甘肃 兰州730000
    3.中国科学院青藏高原研究所环境变化与地表过程重点实验室,北京100101
  • 收稿日期:2015-12-09 修回日期:2016-02-20 出版日期:2016-12-20 发布日期:2016-12-20
  • 作者简介:

    作者简介:张其兵(1975-),男,安徽安庆人,博士,讲师,主要从事冰川遥感研究。E-mail: 10555108@qq.com

  • 基金资助:
    湖南文理学院博士科研启动项目、中科院重点部署项目(KJZD-EW-G03-04)、国家杰出青年科学基金(41225002)资助

Changes of Snow Line Altitude for Glaciers on Western Nyainqentanglha Range Observed by Remote Sensing

Qibing Zhang1,2(), Shichang Kang2,3, Guoshuai Zhang3   

  1. 1. College of Resource Environment and Tourism, Hunan University of Arts and Science, Changde 415000, Hunan, China
    2. State Key Laboratory of Cryospheric Sciences, Cold and Arid Region Environment and Engineering Research Institute, CAS, Lanzhou 730000, Gansu, China
    3. Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, CAS, Beijing 100101, China
  • Received:2015-12-09 Revised:2016-02-20 Online:2016-12-20 Published:2016-12-20
  • Supported by:
    Initial Scientific Research Programme for Doctors in Hunan University of Arts and Science, CAS Key Deployment Project ( KJZD-EW-G03-04), National Natural Science Funds for Distinguished Young Scholar(41225002).

摘要:

利用Landsat TM/ETM+/8 OLI和HJ1A遥感影像资料作为数据源,通过目视解译方法,提取念青唐古拉山脉西段雪线高度变化值,同时对研究区周边气温与降水变化趋势进行分析,研究其与冰川变化的关系。结果表明:2004~2013年北坡13条冰川和南坡15条冰川的雪线高度都呈升高的趋势;从整体上来考察,北坡雪线高度升高值为14 m/a,南坡升高值为4.9 m/a,北坡升高速度比南坡快;自1964年以来,研究区气温升高趋势显著,降水增加不明显,气候变暖是冰川退缩的主要原因;北坡冰川比南坡冰川经历更大的物质负平衡,主要是由于气温的升高率北坡比南坡快所致。

关键词: 念青唐古拉山脉西段, 雪线高度, 遥感, 气候变化

Abstract:

Glaciers in the Tibetan Plateau have experienced change in recent decades with the climate change, and the change trend were not homogeneous. The variation of snow line altitude (SLA) can indicate the glacier change. The changes of SLA for glaciers in the western Nyainqentanglha Range can be detected by remote sensing images obtained at the end of ablation season, such as Landsat TM/ETM+/8 OLI and HJ1A images, when eye interpretation technologywere used to extract snow line. Meanwhile, the variation trend of temperature and precipitation recorded by 4 meteorological stations adjacent to the research area were analyzed, so as to find its influence on glacier change. The results showed that SLA of total studied 28 glaciers rose obviously in 2004-2013. SLA on north slope as a whole raised 14 m/a, while 4.9 m/a on south slope. The air temperature in the studied area rose obviously, precipitation rose slowly since 1964. Climate warming is the main cause for glacier recession. Glaciers on north slope experienced more negative mass balance than south slope, because the rate of air temperature increase on the north is higher than that on the south.

Key words: the western Nyainqentanglha Range, snow line altitude, remote sensing, climate change

中图分类号: 

  • P951