Journal of Geographical Sciences >
Influence of the regional climate variations on lake changes of Zabuye, Dangqiong Co and Bankog Co salt lakes in Tibet
Wang Yunsheng, Associate Professor, specialized in saline lake environment and comprehensive utilization of brine resources. E-mail: wys0907@aliyun.com |
Received date: 2018-10-19
Accepted date: 2019-03-15
Online published: 2019-12-05
Supported by
The Key Scientific Research Project of National Science and Technology Commission(No.K89-01-32)
National Natural Science Foundation of China(No.4907010123)
Special Scientific Research Projects in Public Welfare Profession of Ministry of Land and Resources of the People’s Republic of China(No.201011001)
Basic Research Fund(No.K1418)
Copyright
The lake hydrological and meteorological data of the Tibetan Plateau are not rich. This research reports the observed climatic data and measured water levels of saline lakes from the local meteorological stations in the Zabuye salt lake, the Dangqiong Co salt lake and the Bankog Co salt lake in recent two decades. Combining with satellite remote sensing maps, we have analyzed the changes of the water level of these three lakes in recent years and discussed the origins of the changes induced by the meteorological factors. The results show that the annual mean temperature and the water level reflect a general ascending trend in these three lakes during the observation period. The rising rates of the annual mean temperature were 0.08℃/yr during 1991-2014 and 0.07℃/yr during 2004-2014, and of the water level, were 0.032 m/yr and 0.24 m/yr, respectively. Analysis of changes of the meteorological factors shows the main cause for the increase of lake water quantity are the reduced lake evaporation and the increased precipitation in the lake basins by the rise of average temperature. Seasonal variation of lake water level is powered largely by the supply of lake water types and the seasonal change of regional climate.
Key words: Tibetan Plateau; saline lake; climate variation; lake change
WANG Yunsheng , ZHENG Mianping , YAN Lijuan , BU Lingzhong , QI Wen . Influence of the regional climate variations on lake changes of Zabuye, Dangqiong Co and Bankog Co salt lakes in Tibet[J]. Journal of Geographical Sciences, 2019 , 29(11) : 1895 -1907 . DOI: 10.1007/s11442-019-1995-x
Figure 1 Geographic sketch map of Zabuye, Dangqiong Co and Bankog Co salt lakes |
Figure 2 The mean temperature of Zabuye and Dangqiong Co salt lakes |
Figure 3 Annual evaporation and precipitation of Zabuye and Dangqiong Co salt lakes |
Figure 4 The sunshine duration of Zabuye and Dangqiong Co salt lakes |
Figure 5 Water level fluctuating recorded in Dangqiong Co salt lake during 2004-2014 |
Figure 6 Remote sensing images of Dangqiong Co salt lake |
Figure 7 Water level fluctuating recorded in Zabuye salt lake during 1991-2014 |
Figure 8 Remote sensing images of Zabuye salt lake |
Figure 9 Water level fluctuating recorded in Bankog Co salt lake during 2001-2003 |
Figure 10 Remote sensing images of Bankog Co salt lake |
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