Potential Post-Fire Impacts on a Water Supply Reservoir: An Integrated Watershed-Reservoir Approach
نویسندگان
چکیده
Wildfires are an increasing threat in the Mediterranean region, causing frequent losses of goods and human lives. Not only wildfires a concern due to their immediate effects on vegetation soil, but they can also have substantial impacts surface water quality. Approximately one-third world’s largest cities obtain drinking from forest catchments. The removal consequent runoff increase with high concentration ash sediment often leads increased nutrient contaminant loads downstream reservoirs, damaging aquatic ecosystem threatening health. This study focused post-fire degradation Castelo de Bode reservoir, strategic freshwater supply for Lisbon’s metropolitan area (2,000,000 inhabitants), Portugal. Output data catchment model Soil Water Assessment Tool were used as inputs CE-QUAL-W2 reservoir model. was then calibrated level, temperature, nutrients, total suspended solids, chlorophyll-a, dissolved oxygen. assessed by adjusting land use features (curve number, crop management factor), soil properties (soil erodibility) model, considering different fire (low, medium, severity). able perform temperature seasonality stratification while weak performance found chlorophyll-a probably having considered group algae. Simulations showed deterioration quality at dam wall during first year after fire. Nevertheless, contamination did not appear worrisome regards standards likely capability attenuate inflow concentrations.
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ژورنال
عنوان ژورنال: Frontiers in Environmental Science
سال: 2021
ISSN: ['2296-665X']
DOI: https://doi.org/10.3389/fenvs.2021.684703