-
oa Are Nature-Based Solutions Effective to Improve Flood Regulation in Vilnius Center?
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 17th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Nov 2023, Volume 2023, p.1 - 5
Abstract
Nature-based solutions (NBS) are key for urban flood mitigation. Undoubtedly NBS provides a range of ecosystem services, though their performance and effectiveness under different impacts and conditions are still under research. This study aimed to investigate the NBS’s effectiveness in regulating floods. Different normalised difference vegetation index, enhanced vegetation index, modified soil adjusted vegetation index, soil adjusted vegetation index, tree density and soil hardness (ground data) were assessed. The results showed that the relation between spectral indexes, tree density and soil hardness was low, showing that the presence of vegetation is not a good predictor of the capacity to regulate floods. Soil management (e.g., grass cut) affects soil hardness, reducing the capacity to retain water. Future works must combine remote/proximal sensing with fieldwork to validate the spectral images. Overall, according to the obtained results, due to management, NBS have a reduced flood regulation capacity.