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Impact of Flooding on Shallow Groundwater Chemistry in the Taklamakan Desert Hinterland: Remote Sensing Inversion and Geochemical Methods

College of Ecology and Environment, Xinjiang University, Urumqi 830046, China
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Academic Editor: Cesar Andrade
Water 2022, 14(11), 1724; https://doi.org/10.3390/w14111724
Received: 23 April 2022 / Revised: 21 May 2022 / Accepted: 25 May 2022 / Published: 27 May 2022
(This article belongs to the Section Hydrogeology)
Understanding the effect of flooding on groundwater quality is imperative for oasis vegetation protection and local ecological environment development. We used geochemical and remote sensing inversion methods to evaluate the effects of flood recharge on the groundwater hydrochemical and geochemical processes in the Daliyaboy Oasis. Groundwater samples were collected from 30 ecological observation wells in the study area before (PRF) and after (POF) the flood. Except for small changes in HCO3 and K+ and a decrease in pH, ion levels were higher POF than PRF, and the water chemistry was essentially unchanged. In the POF groundwater, HCO3 was correlated with Cl, Na+, Mg2+, total soluble solids (TDS), and electrical conductivity (EC), but not with SO42−, Ca2+, K+, or pH, and was positively correlated with all other variables, while the remaining variables, except for pH, were strongly positively correlated with each other. PRF water chemistry was controlled by silicate and evaporite mineral weathering and evaporation processes, resulting in high groundwater TDS, EC, and a major ion content, while POF major groundwater ions were regulated by mineral weathering and flood recharge. We demonstrated the high accuracy of remote sensing inversion, confirming this as a reliable method for evaluating groundwater chemistry. The results of the study help to reshape and predict the history of the regional hydrogeological environment and hydrogeochemical development, and provide a theoretical basis for assessing the rational use of local water resources and protecting the ecological environment. View Full-Text
Keywords: desert hinterland; hydrochemistry; remote sensing inversion; geochemical cycles desert hinterland; hydrochemistry; remote sensing inversion; geochemical cycles
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MDPI and ACS Style

Peng, L.; Shi, Q.-D.; Wan, Y.-B.; Shi, H.-B.; Kahaer, Y.-j.; Abudu, A. Impact of Flooding on Shallow Groundwater Chemistry in the Taklamakan Desert Hinterland: Remote Sensing Inversion and Geochemical Methods. Water 2022, 14, 1724. https://doi.org/10.3390/w14111724

AMA Style

Peng L, Shi Q-D, Wan Y-B, Shi H-B, Kahaer Y-j, Abudu A. Impact of Flooding on Shallow Groundwater Chemistry in the Taklamakan Desert Hinterland: Remote Sensing Inversion and Geochemical Methods. Water. 2022; 14(11):1724. https://doi.org/10.3390/w14111724

Chicago/Turabian Style

Peng, Lei, Qing-Dong Shi, Yan-Bo Wan, Hao-Bo Shi, Yasen-jiang Kahaer, and Anwaier Abudu. 2022. "Impact of Flooding on Shallow Groundwater Chemistry in the Taklamakan Desert Hinterland: Remote Sensing Inversion and Geochemical Methods" Water 14, no. 11: 1724. https://doi.org/10.3390/w14111724

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