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FOKE presentation final
Transcript of FOKE presentation final
Remote sensing results
Understanding the Carbon and Pollution Mitigation Potential of Sydney's Urban Forest
Combining i-Tree and LiDAR
Subject to debates over the built form...
Subject to different techniques for measuring and monitoring
Trees in the urban environment...
Newman and Kenworthy, 1989
Source: North Sydney
- To show the benefits of urban trees along two major metropolitan corridors in Sydney using a
known as i-Tree
- To show the benefits of trees in the same corridor using LiDAR an
aerial survey technique
Determining the Area of interest
- Benefits of urban trees along both roads can be quantified, this can be incorporated into LGA strategies
- In particular, the building energy savings are most contrasted.
- A variety of technologies are available to enable local governments manage the urban forest in a more sophisticated way as part of the planning process
Stratifying the area of interest
Institutional, recreational, other
Sampling of plots
Pacific Highway: 60
Parramatta Rd: 30
Field survey and plant identification
Collection of a spectral library of specimens
Collection of LiDAR and hyperspectral data
- Creation of urban surface and terrain models
- Extraction of urban features (trees and buildings)
- Shading effect analysis
- Tree parameters, tree species
Remote sensing methodology
Area of interest
Spectral library of tree species
Hyperspectal image with trees
E.g. potential mitigation of allergenic effects of London Plane Trees through identification of clusters of trees
Tree height models
Tree shading effect analysis
DSM with trees (1)
DSM with no trees (2)
DSM with evergreen trees (3)
21st June 11am - 12pm
21st December 11am - 12pm
Results and Discussion
“This project was funded by the nursery industry levy with support from the Australian Government through Horticulture Australia Limited (HAL).”
According to the small sample trees reduce incident radiation by 20% across the whole area and 8.6% across building roofs
Cris Brack, Sumita Ghosh, Anthony Kachenko, Phil McManus, Krishna Shrestha, Minghzu Wang, Shi-Hsien Yung, Natalia Saldarriaga
Social survey results
North Sydney Wards: 600/
20% response rate
Shade House or Garden (80%)
Improve appearance of the Garden (79.7%)
Attract Birds and Animals (74.5%)
Lowest values <5%
Why would you plant a tree in a garden?
The effect of trees along both roads on the urban shade
Trees reduce the incident radiation by 8-20% depending on the time of year
69% of North Sydney respondents answering that there were not enough trees but only 24% of respondents in Parramatta local government area answering the same.