Changes in global groundwater organic carbon driven by climate change and urbanization.

Nature Communications
Liza K McDonoughAndy Baker

Abstract

Climate change and urbanization can increase pressures on groundwater resources, but little is known about how groundwater quality will change. Here, we use a global synthesis (n = 9,404) to reveal the drivers of dissolved organic carbon (DOC), which is an important component of water chemistry and substrate for microorganisms that control biogeochemical reactions. Dissolved inorganic chemistry, local climate and land use explained ~ 31% of observed variability in groundwater DOC, whilst aquifer age explained an additional 16%. We identify a 19% increase in DOC associated with urban land cover. We predict major groundwater DOC increases following changes in precipitation and temperature in key areas relying on groundwater. Climate change and conversion of natural or agricultural areas to urban areas will decrease groundwater quality and increase water treatment costs, compounding existing constraints on groundwater resources.

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Citations

Aug 18, 2020·Environmental Science and Pollution Research International·Rosa María Fuentes-RivasReyna María Guadalupe Fonseca-Montes de Oca
Nov 6, 2020·International Journal of Environmental Research and Public Health·Qipeng LiaoChunbo Huang
Apr 3, 2021·Journal of Contaminant Hydrology·Philipp BlumPeter Bayer
Aug 5, 2021·The Science of the Total Environment·Mahmood Sadat-NooriWilliam Glamore

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Methods Mentioned

BETA
activated carbon filtration

Software Mentioned

R
ArcGIS
Surfer®
Worldclim
Google Scholar
Scopus
ArcMAP
RStudio
Golden Software Surfer®

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