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Wetland-based solutions against extreme flood and severe drought: Efficiency evaluation of risk mitigation by Yanfeng Wu; Jingxuan Sun; Boting Hu; Guangxin Zhang; Alain N. Rousseau is a Environmental Science article available to read on EtoBox.

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The hydrological regulation services provided by wetlands have great potential to be used as a nature-based solution for improving basin resilience to hydrological extremes. However, the efficiency of wetlands in attenuating hydrological extremes and how this attenuation efficiency varies with the location and type of wetland are not well understood. Here, we used a distributed hydrological modeling platform coupled with isolated and riparian wetland modules (IWs and RWs) to (i) quantify the impacts of wetlands on extreme flood and severe drought and (2) investigate the influences of geographical location and types of wetlands on their regulation efficiency. The hydrological modeling was conducted with various wetland loss scenarios on the Nenjiang River Basin (NRB)- a large river basin where wetlands are abundant and play an important hydrological regulation function. Modeling results showed that RWs mainly decreased peak flow and reduced downstream flood volume. However, IWs predominantly decreased flood volume and slightly mitigated peak flow in the entire NRB. For severe drought, RWs overall alleviated drought while IWs could intensify drought deficit to some extent. In terms o

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Author

Yanfeng Wu; Jingxuan Sun; Boting Hu; Guangxin Zhang; Alain N. Rousseau

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)