Arid Zone Research ›› 2020, Vol. 37 ›› Issue (5): 1095-1104.doi: 10.13866/j.azr.2020.05.01

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Dynamic variation and evaporation of seasonal lakes in arid areas:A case study for the Aiding Lake

CAO Guo-liang, LI Tian-chen, LU Chui-yu, XU Zhi-xia   

  1. (China Institute of WaterResources and Hydropower Research, Beijing 100038, China)
  • Received:2019-12-20 Revised:2020-05-12 Online:2020-09-15 Published:2020-12-16

Abstract: Lakes in arid areas are very sensitive to climate change and human activities, and lake area variations are controlled by changes and balance in the water cycle. Taking the Aiding Lake in Turpan, Xinjiang, as an example, this paper used Landsat remote sensing images and the water index method to interpret the lake area of 1986-2018. The relationships between lake area and regional climate change and river runoff changes were analyzed. The inter annual variations of lake water storage and lake evaporation throughout the years were also evaluated. The results show that the maximum surface area of the Aiding Lake generally occurs in March, and the inter annual variations of the largest area of the lake are basically consistent with changes in river runoff into the lake. The maximum lake volume calculated during 1996-2006 was significantly larger than the evaporation capacity of the lake. After 2006, the lake area decreased with the decline in runoff rates. River runoff affected by glacier shrinkage due to temperature change in arid regions is the decisive factor affecting changes in lake area in the wake of rivers in arid regions.

Key words: arid area, seasonal lake, lake area, Aiding Lake