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New observational and experimental evidence for the recharge mechanism of the lake group in the Alxa Desert, north-central China

The Alxa Desert in north-central China has a unique landscape that contains hundreds of lakes and the highest sand dunes in the world. To date, however, the explanation of the water source in this desert is still controversial. In this paper, continuous hydrometeorological observations, including pr...

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Bibliographische Detailangaben
Hauptverfasser: Dong, Chunyu (VerfasserIn) , Wang, Nai'ang (VerfasserIn) , Chen, Jiansheng (VerfasserIn) , Li, Zhuolun (VerfasserIn) , Chen, Hongbao (VerfasserIn) , Chen, Li (VerfasserIn) , Ma, Ning (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2016
In: Journal of arid environments
Year: 2016, Jahrgang: 124, Pages: 48-61
ISSN:1095-922X
DOI:10.1016/j.jaridenv.2015.07.008
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jaridenv.2015.07.008
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0140196315300173
Volltext
Verfasserangaben:Chunyu Dong, Nai'ang Wang, Jiansheng Chen, Zhuolun Li, Hongbao Chen, Li Chen, Ning Ma
Beschreibung
Zusammenfassung:The Alxa Desert in north-central China has a unique landscape that contains hundreds of lakes and the highest sand dunes in the world. To date, however, the explanation of the water source in this desert is still controversial. In this paper, continuous hydrometeorological observations, including precipitation, evaporation, water level and temperature, in the interior of the Alxa Desert are presented and the water balance of a typical desert lake is calculated. The moisture, Cl− concentration, δ2H and δ18O of several sand profiles, the hydrogeochemical characteristics of some lakes and groundwater, and the elemental composition of some travertine samples are analyzed to investigate the rainfall percolation and groundwater recharge. The results showed that local precipitation is not the major replenishment source of the lakes and groundwater in the Alxa Desert. It is supposed that the groundwater from deep strata in the adjacent fracture zone might recharge the desert lake group from the southeast along an altitudinal gradient.
Beschreibung:Available online 2 August 2015
Gesehen am 11.05.2020
Beschreibung:Online Resource
ISSN:1095-922X
DOI:10.1016/j.jaridenv.2015.07.008

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