Adelaide City Council Tree Diversity and Origins, Matthew Foreman a1762656

Adelaide City Council Tree Diversity & Origins.

Matthew Foreman a1762656

Initial Concept.

Lidar Model Process.

Prior to investigating sites, the initial step was to look at what would be the objective of this model.

Rather than pure geometry topography, more was seeked out with this model, potentially visualizing important problems, components and/or patterns.

The process started with looking at available datasets at https://data.sa.gov.au/ and how they could potentially integrate with a Lidar model.

One of the early ideas was looking at soil qualities around wetlands and how they differ from suburban development. This idea fell short due to lack of highly detailed data and the scale of the model would have been extremely large to represent the data. Continuing the search of datasets, the 2015 Adelaide City Council Street Trees CSV allowed for an interesting analysis of tree species, diversity, native vs introduced and planning patterns in Adelaide CBD and North Adelaide.

After deciding on site and intentions of model, the next step was to develop and represent the data set. Further research and development of the dataset was required. Due to being a CSV file each individual value could be modified. The additional data provided extended to looking at Genius, Family and native to which continent. This dataset was projected in QGIS and coloured based on the Olympics Continent colours, this was further exported as a GeoTif File. The 2009 Adelaide City Lidar Model was gathered from ELVIS. This data was further manipulated in Cloud Compare, separating into multiple layers; trees, low lying shrubs, buildings and the ground plane. The tree layer was exported as a .las file then using the lascolour tool from the LASTools was combined with the Geotiff to produce a RGB model. This model was further segmented removing the non-street trees from the model. The model was further experimented with, including the use of Shadeviz coloring, changes in scalar fields and coloured points. Five of the more diverse streets were selected, duplicated, trimmed and then moved on the Z Axis. The model was further subsampled, then merged and trimmed.

The Lidar model can be found here: https://sketchfab.com/3d-

models/adelaide-city-council-tree-diversity-34973e223b4346af876a70e25b5502bd

Adelaide City Council Street Tree CSV

Additional data added from independent research, Native, Origins, Genius and Family

Plotted in QGIS and Coloured based on continent & exported as Geotif

Lastools Plugin in QGIS to join the Geotif and the Point Cloud Model

Trees 2009 Adelaide City Lidar Model

Shrubs Segmenting

Ground Plane Buildings

Converted to RGB Scaler Field and segmented the Non Street Trees

Merged, Trimmed and Duplicated

Subsampled

ShadeViz

Trim Streets and moved on Z Axis

Distance Mapped

Convert Scaler to RGB

Final Model

Urban Planning Patterns.

Initial analysis of Adelaide tree layout represents clear planning. European trees dominate the key streets of Adelaide & North Adelaide (North Terrace, King William and Frome). The more common species, London Plane, has historical value to Adelaide being planted in the early 20th Century on Frome Street.1 Native trees are fairly limited in Adelaide as street trees. The most common areas are on the outskirts and the older residential areas of Adelaide & North Adelaide. Native trees do not feature much if at all on key streets except for one, Melbourne St.

1 https://adelaidecityexplorer.com.au/items/show/153#:~:text=The%20Frome%20Road%20avenue%20was,being%20used%20for%20 that%20purpose.&text=Because%20of%20this%20use%20it%20became%20known%20as%20the%20London%20Plane.

North American trees dominate the majority of EastWest streets, with the most common being the Celtis Occidentalis (Common Hackberry). An idea behind why these dominate the east west streets may be due to North American trees being more likely to be deciduous, maximising the winter sun. South American trees, almost exclusively Jacarandas, are not spread too much throughout Adelaide but feature heavily on a few streets. Trees from Europe, Asia, Africa are more common on the East-West streets and also scattered occasionally on some North-South trees streets.

Oceania

Europe

Europe/Asia/Africa

North America

South America

Asia

N

W

E

S

Barnard Street, North Adelaide.

Ward Street, North Adelaid

Barnard Street is probably the most diverse of street tree origins in Adelaide & North Adelaide. The street consists of trees from all continents. The main tree on the site, a Ginkgo Biloba (Maidenhair) native to China. Barnard Street also has a couple of native trees, those being the weeping Frangipani and the Bottlebrush. The London Planes are located on the intersection of Jeffcott Street, continuing the pattern of the overall planning philosophy of Adelaide. The North American Black Locust appears on the eastern side of Jeffcott Street and Jacaranda on the western side.

Ward Street is very prototypical to mo in terms of tree origins’ diversity, wit American dominance on the east an the main streets with the London Pla of O’Connell Street. The main tree on the Desert Ash with origins in Europe a few trees with Asian origins with th

Black Locust London Plane Desert Ash

Callery Pear

Maidenhair

London Plane

Jacaranda

Desert Ash

Frangipanii

Common Hackberry

de.

Melbourne Street, North Adelaide.

ost Adelaide and North Adelaide streets th the continued philosophy of North nd west and European trees being on ane being located on the intersection the eastern side of O’Connell Street is e, Asia and Africa. The street also has hat being the Callery Pear.

Melbourne Street is the least conventional in terms of the patterns that are represented throughout Adelaide, however it is considered the most natural. The street consists of half and half native and introduced species, with the native being the Frangipani and the introduced the Honey Locust.

The Desert Ash is located on the intersection of Jerningham Street.

Desert Ash Honey Locust Frangipanii

Trees Origins.

Oceania

Asia

Europe

North America

South America

Oceania/Asia

Europe/Africa/Asia

North America/Asia

Europe/Asia

Wright Street, Adelaide.

Wright Street is another great example of the standard street tree selection in terms of diversity, but with more trees native to Australia than the prototypical Adelaide & North Adelaide Streets. The Common Hackberry makes another appearance as it continues the planning philosophy of its dominance on the East-West streets.

Weeping Bottle brushes make an appearance both on the main street as well as in the side streets. The Jacarandas being placed north of the intersection of Morphett Street and the Callery Pear trees location throughout the side streets and Wright Street.

Jacaranda Weeping Bottle Brush Callery Pear

Common Hackberry

Halifax Street, Adelaide.

As one of the most high traffic streets among the selected streets, this is extremely diverse, with trees from each continent. The street does not really follow many of the similar patterns of the previous examples, asides from the London Plane on the Intersection of King William Road. The street has small amounts of randomness, with Callery Pears on either side and also the Common Hackberry and Frangipanis on the Eastern side. Though it does follow patterns with the Mediterranean Hackberry and the densely planned Jacarandas consistently spaced.

Frangipanii Jacaranda

Mediterranean Hackberry Callery Pear Mediterranean Hackberry London Plane

Trees Origins.

Oceania

Asia

Europe

North America

South America

Oceania/Asia

Europe/Africa/Asia

North America/Asia

Europe/Asia

Adelaide City Council Tree Diversity & Origins.

Matthew Foreman a1762656