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Impact of groundwater on the dissolved inorganic carbon cycle for lakes in arid regions

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Titel: Impact of groundwater on the dissolved inorganic carbon cycle for lakes in arid regions
Autoren: Jie CHEN, Hui QIAN, Peiyue LI, Rong MA, Zibo XU, Yuchen YANG
Quelle: Shuiwen dizhi gongcheng dizhi, Vol 52, Iss 5, Pp 10-23 (2025)
Verlagsinformationen: Editorial Office of Hydrogeology & Engineering Geology, 2025.
Publikationsjahr: 2025
Bestand: LCC:Geology
Schlagwörter: surface water-groundwater interaction, lakes in arid regions, dic, ecological environment, carbon cycle, Geology, QE1-996.5
Beschreibung: Groundwater serves as a crucial source of replenishment for lakes in arid regions. It not only acts as an important link in maintaining the ecological health of these lakes, but also plays a vital role in the terrestrial ecosystem carbon cycle. The unique aquatic environment and hydro-ecological patterns of arid lakes make dissolved inorganic carbon (DIC) a key component in the lake carbon cycle. Dissolved CO2 and \begin{document}${\mathrm{HCO}}_3^- $\end{document}, the main forms of DIC, are the primary sources for photosynthesis and organic matter production. Phytoplankton absorb DIC to synthesize organic carbon, part of which is oxidized and decomposed by microorganisms, while the rest settles and is buried in the sediment, rendering the lake a “sink” for CO2. However, the formation of calcium carbonate precipitates from Ca2+ and \begin{document}${\mathrm{HCO}}_3^- $\end{document}can increase the partial pressure of CO2 in the lake water, causing the lake to act as a “source” of CO2. This study reviews the critical role of groundwater in the hydrological balance, carbon balance, and ecological balance of arid region lake systems. It identifies the characteristics of DIC in arid regions such as lake water. It elucidates how groundwater affects lake DIC through water cycling, hydrogeochemical interactions, and nutrient input. The applicability of monitoring technologies, carbon isotope techniques, and model simulations in studying lake DIC is also summarized and compared. Finally, future research directions for the DIC cycle in arid region lakes are proposed, focusing on the mechanisms of hydrological and biogeochemical processes influencing lake DIC, the carbon cycle characteristics of artificially replenished lakes, and the effects of lake carbon cycling and adaptive management strategies.
Publikationsart: article
Dateibeschreibung: electronic resource
Sprache: Chinese
ISSN: 1000-3665
Relation: https://doaj.org/toc/1000-3665
DOI: 10.16030/j.cnki.issn.1000-3665.202503035
Zugangs-URL: https://doaj.org/article/fb92ec95a07d4ed8a72f4d06e6e0151c
Dokumentencode: edsdoj.fb92ec95a07d4ed8a72f4d06e6e0151c
Datenbank: Directory of Open Access Journals
Beschreibung
Abstract:Groundwater serves as a crucial source of replenishment for lakes in arid regions. It not only acts as an important link in maintaining the ecological health of these lakes, but also plays a vital role in the terrestrial ecosystem carbon cycle. The unique aquatic environment and hydro-ecological patterns of arid lakes make dissolved inorganic carbon (DIC) a key component in the lake carbon cycle. Dissolved CO2 and \begin{document}${\mathrm{HCO}}_3^- $\end{document}, the main forms of DIC, are the primary sources for photosynthesis and organic matter production. Phytoplankton absorb DIC to synthesize organic carbon, part of which is oxidized and decomposed by microorganisms, while the rest settles and is buried in the sediment, rendering the lake a “sink” for CO2. However, the formation of calcium carbonate precipitates from Ca2+ and \begin{document}${\mathrm{HCO}}_3^- $\end{document}can increase the partial pressure of CO2 in the lake water, causing the lake to act as a “source” of CO2. This study reviews the critical role of groundwater in the hydrological balance, carbon balance, and ecological balance of arid region lake systems. It identifies the characteristics of DIC in arid regions such as lake water. It elucidates how groundwater affects lake DIC through water cycling, hydrogeochemical interactions, and nutrient input. The applicability of monitoring technologies, carbon isotope techniques, and model simulations in studying lake DIC is also summarized and compared. Finally, future research directions for the DIC cycle in arid region lakes are proposed, focusing on the mechanisms of hydrological and biogeochemical processes influencing lake DIC, the carbon cycle characteristics of artificially replenished lakes, and the effects of lake carbon cycling and adaptive management strategies.
ISSN:10003665
DOI:10.16030/j.cnki.issn.1000-3665.202503035