Inputs of terrestrial dissolved organic matter in dam reservoirs during precipitation: impact on water quality and management

Rong Hao (), Xingle Ning, Yaru Zhou, Ruicheng Ma, Xueshuai Zhang, Guohong Qiu and Ronggui Hu
Additional contact information
Rong Hao: Huazhong Agricultural University
Xingle Ning: Huazhong Agricultural University
Yaru Zhou: Huazhong Agricultural University
Ruicheng Ma: Huazhong Agricultural University
Xueshuai Zhang: Huazhong Agricultural University
Guohong Qiu: Huazhong Agricultural University
Ronggui Hu: Huazhong Agricultural University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2024, vol. 120, issue 5, No 13, 4349-4366

Abstract: Abstract With the significant increase in extreme rainfall of climate change and anticipated of dam reservoir, terrestrial dissolved organic matter (DOM) has received attention because of its role in regulating water quality and ecological functions. This study investigated the characteristics of soil and vegetation DOM under different heavy precipitation (HP) and associated flooding (AF) scenarios by UV–visible and fluorescence excitation–emission matrices coupled with parallel factor analysis (EEM-PARAFAC), as well as the resultant effects on water quality. The results showed that precipitation makes the substantial inputs of terrestrial DOM in dam reservoir. The changes in HP and AF were distinct between soil and vegetation DOM. Aromaticity and molecular weight of soil DOM were higher during AF compared to HP, while there was no significant difference in fluorescence components between the two events. Aromaticity and humification of vegetation DOM, as well as humic-like components, were higher during AF compared to HP. The terrestrial DOM inputs bring adverse effects on water quality for dam reservoir. Apart from incorporating the monitoring of terrestrial DOM, a multi-objective optimization adaptation strategy, as well as implementing ecological restoration at region scales, can mitigate the adverse effects. This study enhances the resilience of dam reservoirs against hazards risks during climate change.

Keywords: Climate change; Dam reservoirs; Water quality; Dissolved organic matter; Resilience (search for similar items in EconPapers)
Date: 2024
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1007/s11069-023-06358-3 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:nathaz:v:120:y:2024:i:5:d:10.1007_s11069-023-06358-3

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11069

DOI: 10.1007/s11069-023-06358-3

Access Statistics for this article

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards is currently edited by Thomas Glade, Tad S. Murty and Vladimír Schenk

More articles in Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards from Springer, International Society for the Prevention and Mitigation of Natural Hazards
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().