Design principles for successful nature based solutions...• Design principles • Interactive...
Transcript of Design principles for successful nature based solutions...• Design principles • Interactive...
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Design principles
for successful nature based solutions
for healthy, climate resilient cities
6 April 2017 Green Infrastructure, NBS for sustainable and resilient cities Orvieto
Suzanne van der Meulen
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6 April 2017
Requirements for successful design of NBS
Aims and ambitions
• Healthy Urban Living
• Climate adaptation
Required for design
• Insight in effectiveness of measures
• Design principles
• Interactive design support tools
• Insight in local critical parameters
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Insight in effectiveness of green measures & design
principles
6 April 2017
Mechanisms
Effectiveness
Design principles
• Interception
• Infiltration
• (root uptake and
transpiration)
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Interactive design support tools
Adaptation Support Tool
6 April 2017
1. Draw measure
(e.g. green roof)
2. Effect calculated for water storage and temperature
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Critical parameters: Water dependence
Stepwise assessment framework
1) Inventory of relevant ecosystem services of GI
Table.
2) Assessment of the dependence on water quality and quantity
for ecosystem service delivery
Table & literature
3) Assessing water availability
Water balance model
6 April 2017
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Water dependence of ecosystem services of GI
Case study Utrecht Fair and Central train station area
6 April 2017
Most critical:
• Impact of drought on temperature
regulation (cooling) via
evapotranspiration
• Impact of very wet conditions, when
ponding occurs, on recreation
potential of green spaces.
• High groundwater tables limit the role
of green spaces in stormwater runoff
mitigation due to the reduced capacity
of the soil to drain and store water.
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Exploring drougth in Utrecht
6 April 2017
Impact of drought on cooling
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Maximapark Wilhelmina-park
Overvecht
Julianapark
Kanaleneiland Park Transwijk
Moreelsepark Jaarbeurs/
station
Exploring drougth in Utrecht
6 April 2017
Visual observations water stress Water balance of the city Calculated water stress
Impact of drought on cooling Effectiveness measures to reduce water stress