Enhancing the Economic Value of Large Investments in Sustainable Drainage Systems (SuDS) through Inclusion of Ecosystems Services Benefits
| Autor: | Assela Pathirana, Laszlo Hayde, Mohanasundar Radhakrishnan, Santiago Urrestarazu Vincent |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
lcsh:Hydraulic engineering
0208 environmental biotechnology Geography Planning and Development 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry Ecosystem services lcsh:Water supply for domestic and industrial purposes Monetary value lcsh:TC1-978 Sewerage multiple values Drainage Sustainable Drainage Systems multi-objective optimization Environmental planning 0105 earth and related environmental sciences Water Science and Technology Rate of return lcsh:TD201-500 Flood myth business.industry Environmental resource management Storm Water Management Model 020801 environmental engineering business Surface runoff |
| Zdroj: | Water, Vol 9, Iss 11, p 841 (2017) Water; Volume 9; Issue 11; Pages: 841 |
| ISSN: | 2073-4441 |
| Popis: | Although Sustainable Drainage Systems (SuDS) are used in cities across the world as effective flood adaptation responses, their economic viability has frequently been questioned. Inclusion of the monetary value of ecosystem services (ES) provided by SuDS can increase the rate of return on investments made. Hence, this paper aims at reviewing the enhancement of the economic value of large-scale investments in SuDS through inclusion of ecosystem services. This study focuses on the flood reduction capacity and the ES benefits of green roofs and rain barrels in the combined sewerage network of Montevideo Municipality in Uruguay. The methodology comprises a cost–benefit analysis—with and without monetised ES provided by SuDS—of two drainage network configurations comprising: (i) SuDS; and (ii) SuDS and detention storage. The optimal drainage design for both these drainage configurations have been determined using SWMM-EA, a tool which uses multi-objective optimisation based evolutionary algorithm (EA) and the storm water management model (SWMM). In both design configurations, total benefits comprising both flood reduction and ES benefits are always higher than their costs. The use of storage along with SuDS provides greater benefits with a larger reduction in flooding, and thus is more cost-effective than using SuDS alone. The results show that, for both of the drainage configurations, the larger investments are not beneficial unless ES benefits are taken into account. Hence, it can be concluded that the inclusion of ES benefits is necessary to justify large-scale investments in SuDS. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|