Analysis of Multiple Benefits from Green Infrastructure Strategies
•Download as PPT, PDF•
1 like•152 views
Blue Green Cities presentation in Newcastle
Recommended
Recommended
More Related Content
What's hot
What's hot (20)
Viewers also liked
Viewers also liked (17)
Similar to Analysis of Multiple Benefits from Green Infrastructure Strategies
Similar to Analysis of Multiple Benefits from Green Infrastructure Strategies (20)
Recently uploaded
Recently uploaded (20)
Analysis of Multiple Benefits from Green Infrastructure Strategies
- 1. Analysis of benefit distribution in Blue Green Cities: A spatial toolkit Dr Lan Hoang Department of Engineering LAA meeting, Newcastle 25 November 2014 Centre for Sustainable Development
- 2. Outline How the Blue-Green Cities project explores flood risks and the multiple benefits of flood risk strategies to cities Multiple benefits from Sustainable Urban Drainage Systems Green Infrastructure Project Aim: Develop and rigorously evaluate strategies for managing flood risk that deliver multiple benefits as part of urban planning and renewal
- 3. Department of Engineering Centre for Sustainable Development Water Sensitive Cities
- 4. Department of Engineering Centre for Sustainable Development
- 5. Department of Engineering Centre for Sustainable Development Multiple Benefits of Green Infrastructure
- 6. Department of Engineering Centre for Sustainable Development Multiple Benefits of Green Infrastructure
- 7. Department of Engineering Centre for Sustainable Development Grey versus Green Solutions (Portland , Oregon)
- 8. Department of Engineering Centre for Sustainable Development The three point approach
- 9. Department of Engineering Centre for Sustainable Development Grey versus Green Solutions
- 10. Urban interdependencies Functional Complexity: the linkages across the urban components which can influence their primary function Source: OTAK Relational Complexity: the governance linkages across the corresponding planning and management agencies Source: eastpdxnews.com
- 11. Functional Complexity (Physical) •Reduces heat island effect •Reduces temperature in building •Protects roofing material •Increases biodiversity •Retains stormwater, relieves downstream sewers •Sequesters CO2 •More maintenance Relational Complexity (organizational) •Local and distant effects •Temporal effects affecting planning •Who benefits? •Who manage the benefits/disbenefits? •Agency and owner interactions Green Roofs Department of Engineering Centre for Sustainable Development
- 12. Department of Engineering Centre for Sustainable Development Interactions with the Urban System
- 13. Implications Soil Moisture Low High Saturation Air temperature Low High Low High Low High Water storage capacity ++ +++ + ++ - - Pollutant trap ++ ++ +++ +++ + + Thermal building insulation ++ ++ ++ ++ + + Thermal exchange + ++ + +++ - + Carbon sequestration + + ++ +++ - - Noise attenuation +++ +++ ++ ++ + + Biodiversity Cold and drought resistant ecosystem Drought resistant ecosystem Cold resistant ecosystem Multiple species - - Visual amenity + ++ +++ +++ - - Potential functions of green roofs under different conditions. +, ++, +++ denote the potential level of functions from low to high; - denotes small or zero functioning Department of Engineering Centre for Sustainable Development
- 14. Department of Engineering Centre for Sustainable Development Benefit intensity- based on the cumulative spatial distribution of benefits Developing benefit profiles and overall benefit intensity
- 15. Department of Engineering Centre for Sustainable Development Case Study, Johnson Creek Portland, Oregon USA
- 16. Department of Engineering Centre for Sustainable Development Foster Road Floodplain Restoration - Before
- 17. Department of Engineering Centre for Sustainable Development Foster Road Floodplain Restoration - After
- 18. Department of Engineering Centre for Sustainable Development Spatial distribution of benefits in a GIS tool Project extent Avoided floodAccessibility to green space
- 19. Department of Engineering Centre for Sustainable Development Traffic impacts
- 20. Department of Engineering Centre for Sustainable Development Noise propagation
- 21. LANDSAT-based analysis Summer Winter Cooler micro- climate Warmer micro- climate Time-slide example: 2013
- 22. Department of Engineering Centre for Sustainable Development Overlay of physical benefits of site Location of benefit occurrences Intensity of benefit occurrences Beneficiaries
- 23. Department of Engineering Centre for Sustainable Development Other functions •Visualise EPA SWMM model •Run SWMM model and display results in QGIS
- 24. Department of Engineering Centre for Sustainable Development Conclusion •Multiple potential Green Infrastructure benefits •Toolkit based on existing tools can be used to analyse spatial and temporal distribution of those benefits • Next step: •Fully integrate functions into the toolkit •Analyse GI benefits under the blue and green conditions •Analyse GI benefits for different scales •Use Multi-criteria Analysis to aggregated the benefits Thank You for Listening
Editor's Notes
- This slide show analysis results on surface temperature deduced from LANDSAT air temperature data, landuse classification and surface emissivity. Overall the image shows the value of the East Lents project and adjacent areas in mitigating the urban heat island effect in the summer, as well as maintaining a warmer micro-climate in winter. Note the geographical distribution of the heat surface: overall north and north-west of Portland tends to have higher temperature while South and South-East have relatively lower temperature, perhaps due to the parser population and development density and the relative abundance of green spaces. In this analysis and other habitat analysis (not shown here), roads and built-up boundaries are clearly physical barriers for landscape and habitat connectivity. This is also confirmed from the interviews with stakeholders in the city. Some stakeholders have highlighted that this could also act as barriers for people to access the site, e.g. school-children to cross the four-arterial SE Foster Road to get to the East Lents site. The work on Topic 5 therefore shows that while the East Lents has wider impacts to the surrounding area, there is a need to improve the design and access in subsequent Green Infrastructure projects in the city. The work also recognises the strong collaboration and working relation amongst the stakeholders, which contributes to the success of the project. These results would be included in a under-preparation draft addressing the question whether Portland is a blue-green city.