Green Space Taskforce
Green Space Task force (GSTF) is formed under the NUS Sustainable Steering Committee (SSC) to look into ways to increase and enhance the quality of green spaces in the built environment of our campus.
Role of GSTF:
– To recommend policies on green spaces for new developments.
– To develop strategies for enhancing greenery to existing buildings.
– To engage students & faculties to use green spaces for learning & research.
Definition of Green Spaces (in buildings)
Green spaces, in this context, are defined as any green roof, roof garden or vertical greening within the built-up perimeter of the building or complex.
Why increase Green Spaces?
– Reduce energy consumption through reduction of cooling load due to thermal insulation from green spaces.
– Improve air quality directly by filtering airborne particles in their leaves and branches.
– Improve drainage management by slowing down surface run-off.
– Foster community interaction
– Increase therapeutic effects and occupants well-being
– Improve aesthetics of the buildings.
Use of Thermal Satellite Images to Measure Urban Heat Island Effect
– Bare rooftops and concrete surfaces act as heat sinks, making urban areas 3 degrees hotter than forested rural areas.
– Skyrise greenery shields bare surfaces from the harsh tropical sun and creates more cooling areas.
– This initiative is used as a guide to determine the extent of coverage required at each UHI and priority of implementation for existing development.
Use of Carbon Storage & Sequestration Measurements
– Carbon sequestration is a natural or artificial process by which carbon dioxide is removed from the atmosphere and held in solid or liquid form.
– The carbon sequestration potential of skyrise greenery is about 0.375 kg/sqm per year. This can be used to guide the quantum of the green plot ratio to be applied to the built-up area of the development during the design stage. As a rough guide, a GnPR of 1.5 is required to achieve the same carbon sequestration had the site remained undeveloped and planted with trees.
– This initiative is used as a guide to determine optimum quantity of plants required to achieve desired carbon footprint off-set targets.
Use of Drought-Tolerant Plants
– With climate change causing extremities in weather and depleting water levels, the sustainable way forward is to introduce plants requiring less water.
– Drought-tolerant plants contribute to water savings by reducing water required for irrigation by half, which leads to reduced manpower required for watering.
– This initiative is used as a guide to determine the selection of plant species and watering regimes