中国地理科学 ›› 2017, Vol. 27 ›› Issue (6): 918-933.doi: 10.1007/s11769-017-0914-6

• 论文 • 上一篇    下一篇

Assessing Spatio-temporal Characteristics of Water Storage Changes in the Mountainous Areas of Central Asia Based on GRACE

ZHANG Pengfei1,2, CHEN Xi1, BAO Anming1, LIU Tie1, Felix NDAYISABA1,2   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi 830011, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2017-01-09 修回日期:2017-05-04 出版日期:2017-12-27 发布日期:2017-11-06
  • 通讯作者: BAO Anming.E-mail:baoam@ms.xjb.ac.cn E-mail:baoam@ms.xjb.ac.cn
  • 基金资助:

    Under the auspices of National Natural Science Foundation of China (No. 41371419), Key Program for International Science and Technique Cooperation Projects of China (No. 2010DFA92720-04)

Assessing Spatio-temporal Characteristics of Water Storage Changes in the Mountainous Areas of Central Asia Based on GRACE

ZHANG Pengfei1,2, CHEN Xi1, BAO Anming1, LIU Tie1, Felix NDAYISABA1,2   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi 830011, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-01-09 Revised:2017-05-04 Online:2017-12-27 Published:2017-11-06
  • Contact: BAO Anming.E-mail:baoam@ms.xjb.ac.cn E-mail:baoam@ms.xjb.ac.cn
  • Supported by:

    Under the auspices of National Natural Science Foundation of China (No. 41371419), Key Program for International Science and Technique Cooperation Projects of China (No. 2010DFA92720-04)

摘要:

The mountainous areas of Central Asia provide substantial water resources, and studying change in water storage and the impacts of precipitation and snow cover in the mountain ranges of Central Asia is of the greatest importance for understanding regional water shortages and the main factors. Data from the GRACE (Gravity Recovery and Climate Experiment) satellites, precipitation products and snow-covered area data were used to analyze the spatio-temporal characteristics of water storage changes and the effects of precipitation and snow cover from April 2002 to December 2013. The results were computed for each mountain ranges, and the following conclusions were drawn. The water storage in the mountainous areas of Central Asia as a whole increases in summer and winter, whereas it decreases in autumn. The water storage is affected by precipitation to some extent and some areas exhibit hysteresis. The area of positive water storage changes moves from west to east over the course of the year. The water storage declined during the period 2002-2004. It then returned to a higher level in 2005-2006 and featured lower levels in 2007-2009 Subsequently, the water storage increased gradually from 2010 to 2013. The Eastern Tianshan Mountains and Western Tianshan Mountain subzones examined in this study display similar tendencies, and the trends observed in the Karakorum Mountains and the Kunlun Mountains are also similar. However, the Eastern Tianshan Mountains and Western Tianshan Mountains were influenced by precipitation to a greater degree than the latter two ranges. The water storage in Qilian Mountains showed a pronounced increasing trend, and this range is the most strongly affected by precipitation. Based on an analysis of all investigated subzones, precipitation has the greatest influence on total water storage relative to the snow covered area in some areas of Central Asia. The results obtained from this study will be of value for scientists studying the mechanisms that influence changes in water storage in Central Asia.

关键词: water storage, Gravity Recovery and Climate Experiment (GRACE), mountainous areas, Central Asia, precipitation

Abstract:

The mountainous areas of Central Asia provide substantial water resources, and studying change in water storage and the impacts of precipitation and snow cover in the mountain ranges of Central Asia is of the greatest importance for understanding regional water shortages and the main factors. Data from the GRACE (Gravity Recovery and Climate Experiment) satellites, precipitation products and snow-covered area data were used to analyze the spatio-temporal characteristics of water storage changes and the effects of precipitation and snow cover from April 2002 to December 2013. The results were computed for each mountain ranges, and the following conclusions were drawn. The water storage in the mountainous areas of Central Asia as a whole increases in summer and winter, whereas it decreases in autumn. The water storage is affected by precipitation to some extent and some areas exhibit hysteresis. The area of positive water storage changes moves from west to east over the course of the year. The water storage declined during the period 2002-2004. It then returned to a higher level in 2005-2006 and featured lower levels in 2007-2009 Subsequently, the water storage increased gradually from 2010 to 2013. The Eastern Tianshan Mountains and Western Tianshan Mountain subzones examined in this study display similar tendencies, and the trends observed in the Karakorum Mountains and the Kunlun Mountains are also similar. However, the Eastern Tianshan Mountains and Western Tianshan Mountains were influenced by precipitation to a greater degree than the latter two ranges. The water storage in Qilian Mountains showed a pronounced increasing trend, and this range is the most strongly affected by precipitation. Based on an analysis of all investigated subzones, precipitation has the greatest influence on total water storage relative to the snow covered area in some areas of Central Asia. The results obtained from this study will be of value for scientists studying the mechanisms that influence changes in water storage in Central Asia.

Key words: water storage, Gravity Recovery and Climate Experiment (GRACE), mountainous areas, Central Asia, precipitation