地理学报 ›› 2014, Vol. 69 ›› Issue (7): 993-1001.doi: 10.11821/dlxb201407011

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1972-2012年青藏高原中南部内陆湖泊的水位变化

张鑫1,2, 吴艳红2(), 张鑫1()   

  1. 1. 西北农林科技大学水利与土木建筑工程学院, 陕西杨凌 712100
    2. 中国科学院遥感与数字地球研究所, 北京 100094
  • 收稿日期:2014-01-27 修回日期:2014-05-28 出版日期:2014-07-20 发布日期:2014-09-12
  • 作者简介:

    作者简介:张鑫 (1990-), 女, 硕士研究生, 研究方向为遥感水文。E-mail: xzhang@nwsuaf.edu.cn

  • 基金资助:
    中国科学院战略性先导科技专项 (B类) (XDB03030406);国家自然科学基金项目 (41371218)

Water level variation of inland lakes on the south-central Tibetan Plateau in 1972-2012

Xin ZHANG1,2, Yanhong WU2(), Xin ZHANG1()   

  1. 1. College of Water Resources and Architecture Engineering, Northwest A & F University, Yangling 712100, Shaanxi, China
    2. Key Laboratory of Digital Earth Science, Center for Earth Observation and Digital Earth, CAS, Beijing 100094, China
  • Received:2014-01-27 Revised:2014-05-28 Online:2014-07-20 Published:2014-09-12
  • Supported by:
    The "Strategic Priority Research Program" of the Chinese Academy of Sciences (B), No.XDB03030406;National Natural Science Foundation of China, No.41165011

摘要:

青藏高原的湖泊水位变化能够清晰的记录湖泊波动,分析近几十年来气候变暖背景下青藏高原典型湖泊水位的动态变化,对理解全球变化的区域响应特征和规律有重要意义。本文利用多源遥感数据,获取1972-2012年青藏高原南部地区5个典型湖泊的面积与水位序列,并分析了40年来湖泊水位的变化特征。研究结果表明,1972-2012年,普莫雍错,塔若错,扎日南木错水位呈上升趋势,分别上升了0.89 m、0.70 m、0.40 m;同期,佩枯错与玛旁雍错的水位呈下降趋势,分别下降了1.70 m、0.70 m。总体来看,五个湖泊在1990s-2012年的变化比1970s-1990s的变化更剧烈,从空间变化看,处于青藏高原边缘地带的佩枯错与玛旁雍错发生的变化呈现一致性,而位于中部地带的塔若错与扎日南木错的变化也呈现一致性。

关键词: 青藏高原, 湖泊水位, 动态变化, 遥感

Abstract:

The changes of lake levels could keep a record of lake variation on the Tibetan Plateau. Under the background of global warming in recent years, it is of importance to understand regional responses to climate changes by revealing the lake level variation of the inland lakes on the Tibetan Plateau. The paper obtained the time-series of the five typical lake areas and levels from 1972 to 2012 in the south-central Tibetan Plateau, and used the multi-sensor remote sensing data to analyze the variation of lake levels in recent 40 years. The results show that the three inland lakes (Pumo Yumco, Taro Co and Zhari Namco) expanded by 0.89 m, 0.70 m and 0.40 m in water level, respectively, while the two lakes (Peiku Co and Mapang Yumco) presented a decreasing tendency in water level. On the whole, the period 2000-2012 experienced remarkable changes compared with the preceding period (1976-1999). In term of spatial changes, the lakes of Peiku Co and Mapang Yumco, located in south fringe of the Tibetan Plateau, have shown the consistency in lake level changes, and so are the lakes of Taro Co and Zhari Namco in the southwestern part of central Tibetan Plateau.

Key words: Tibetan Plateau, lake level, spatial-temporal change, remote sensing