地理研究 ›› 2008, Vol. 27 ›› Issue (5): 1178-1191.doi: 10.11821/yj2008050021

• 气候与全球变化 • 上一篇    下一篇

西藏玛旁雍错流域冰川与湖泊变化及其对气候变化的响应

叶庆华1,2, 姚檀栋1,3, 郑红星4, 张雪芹4   

  1. 1. 中国科学院青藏高原研究所环境变化与地表过程实验室, 北京 100085;
    2. 中国科学院遥感应用研究所遥感科学国家重点实验室,北京 100101;
    3. 中国科学院寒区旱区环境与工程研究所,兰州 730000;
    4. 中国科学院地理科学与资源研究所,北京 100101
  • 收稿日期:2007-12-12 修回日期:2008-07-23 出版日期:2008-09-25 发布日期:2008-09-25
  • 作者简介:叶庆华(1972-),女,山东日照人,博士,副研究员,硕士生导师。主要从事资源环境遥感及其应用研究,已发表学术论文30余篇。E-mail:yeqh@itpcas.ac.cn
  • 基金资助:

    国家自然基金项目(40601056, 40121101);中国科学院创新项目(KZCX3-SW-339);中国科学院遥感应用研究所遥感科学国家重点实验室开放基金和中国科学院青藏高原研究所环境实验室领域前沿项目的支持

Glacier and lake co-variations and their responses toclimate change in the Mapam Yumco Basin on Tibet

YE Qing-hua1,2, YAO Tan-dong1,3, ZHENG Hong-xing4, ZHANG Xue-qin4   

  1. 1. Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of TibetanPlateau Research, CAS Beijing 100085, China;
    2. State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of RemoteSensing Applications of CAS and Beijing Normal University, Beijing 100101, China;
    3. State Key Laboratory of Cryosphere and Environment, CAS, Lanzhou 730000, China;
    4. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2007-12-12 Revised:2008-07-23 Online:2008-09-25 Published:2008-09-25
  • Supported by:

    国家自然基金项目(40601056, 40121101);中国科学院创新项目(KZCX3-SW-339);中国科学院遥感应用研究所遥感科学国家重点实验室开放基金和中国科学院青藏高原研究所环境实验室领域前沿项目的支持

摘要:

利用遥感和地理信息系统技术,基于1974,1990,1999和2003年4个不同时期的遥感影像,包括Landsat系列影像,ASTER影像和地形图,研究了玛旁雍错流域(面积7786 km2)内冰川与湖泊的变化及其对气候变化的响应。研究结果表明,由于气候变暖,在过去30年里该流域冰川和湖泊都以退为主,有进有退。自1974年到2003年,冰川面积从107.92 km2减少到100.39 km2,冰川退缩明显加速。由于年降水量减少、蒸发量增大,30年中湖泊总面积从782.24 km2减少到748.08 km2。湖面的缩小与扩涨都在加速,尤其是小湖泊变化更明显,湖泊的加速变化可能是青藏高原高海拔内陆流域水循环过程加速的表征之一。

关键词: 山地冰川, 高海拔内陆流域, 时空变化, 地理信息系统, 遥感, 玛旁雍错流域, 青藏高原, 喜马拉雅山脉

Abstract:

Glacier and lake variations in the Mapam Yumco Basin were studied by integrating series of spatial data from topographic maps and Landsat images in four different periods of time:1974,1990,1999 and 2003.The results indicate that glaciers and lakes in the Basin both retreated and advanced during the last 30 years. As a contribution to the studies of the impact of climate change on glaciers and lakes in high-altitude closed basins of the western Himalayas, we present spatial and temporal variations of glaciers and lakes in the Mapam Yumco Basin on the Tibetan Plateau, by means of Geographical Information System and Remote Sensing techniques. Our results show that both glacier and lake areas in the Mapam Yumco Basin decreased from 1974 to 2003. Glaciers in the basin have receded due to the warmer climate, in total by 7.53 km2 (0.26 km2 a-1 or 0.25 % a-1) during 1974 2003 (c.f. 0.07 % a-1 nearby the Yamzhog Yumco Basin, and 0.18% a-1, the mean glacier recession rate over China since the 1960s). During the same period, lake area decreased by 34.16 km2 (1.18 km2 a-1 or 4.37 % of whole lake area in the basin) in total, where decreased by 1.43 km2 a-1 on average (with lake shrinkage amounting to 1.70 km2 a-1 in some areas and lake growth to 0.27 km2 a-1 in others) during 1974-1990, by 1.55 km2 a-1 (with lake shrinkage amounting to 2.15 km2 a-1 in some areas and lake growth to 0.60 km2 a-1 in others) during 1990-1999, while enlarged by 0.66 km2 a-1 (with lake shrinkage amounting to 2.24 km2 a-1 and lake growth to 2.89 km2 a-1) during 1999-2003 over the past three decades. It is suggested that both enlargement and reduction of lakes were accelerated, which might be an indicator for an accelerated water cycle process over the Tibetan Plateau in a warming climate condition.

Key words: alpine glacier, inland lake, spatial temporal variation, geographic Information system, remote sensing, Mapam Yumco basin, Tibetan plateau, Mt. Himalayas