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Article

Temporal Variations in the Quantity of Groundwater Flow in Nam Co Lake

1
School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
School of Engineering, Nagasaki University, Nagasaki 852821, Japan
*
Author to whom correspondence should be addressed.
Water 2018, 10(7), 941; https://doi.org/10.3390/w10070941
Received: 2 May 2018 / Revised: 4 July 2018 / Accepted: 5 July 2018 / Published: 14 July 2018
This paper aims to calculate and analyze the spatial and temporal variations in the groundwater flow quantity in Nam Co Lake based on the water balance principle. The results show that a large amount of groundwater was gradually lost and that, groundwater loss decreased from 1.9 billion m3 to 1.5 billion m3 from the period of 1980–1984 to 1995–2009. The comparative analysis in the current study indicates that the decrease in the groundwater index has a strong linear relationship with the temperature of the ground surface on the Tibetan Plateau, with a correlation coefficient as high as 0.92. Moreover, environmental variations such as large-scale engineering construction projects and increases in water storage may have played dominant roles in the sudden changes in the water quantities of plateau lakes (e.g., Nam Co Lake) during the periods of 1990–1995 and 2000–2009. The increased water levels resulted in reduced groundwater losses, which may lead to the substantial expansion or gradual shrinkage of the Qinghai–Tibet Plateau lakes over short periods of time. The results of this study provide an important reference for studying the mechanisms of lake water level changes on the Qinghai–Tibet Plateau. View Full-Text
Keywords: Nam Co Lake; groundwater loss; environmental variation; water level change mechanism; Qinghai–Tibet Plateau Nam Co Lake; groundwater loss; environmental variation; water level change mechanism; Qinghai–Tibet Plateau
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MDPI and ACS Style

Du, Y.; Huang, Z.; Xie, M.; Farooq, A.; Chen, C. Temporal Variations in the Quantity of Groundwater Flow in Nam Co Lake. Water 2018, 10, 941. https://doi.org/10.3390/w10070941

AMA Style

Du Y, Huang Z, Xie M, Farooq A, Chen C. Temporal Variations in the Quantity of Groundwater Flow in Nam Co Lake. Water. 2018; 10(7):941. https://doi.org/10.3390/w10070941

Chicago/Turabian Style

Du, Yan; Huang, Zhide; Xie, Mowen; Farooq, Asim; Chen, Chen. 2018. "Temporal Variations in the Quantity of Groundwater Flow in Nam Co Lake" Water 10, no. 7: 941. https://doi.org/10.3390/w10070941

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