gentrification, redevelopment and ethnic diversification · overall gentrification is present...
TRANSCRIPT
12/10/2007
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Tracing the path of development of Yaletown after Expo86
Geography 376 Project
Kelly S Liang
1900’s: Vancouver’s first designated commercial zone
1930’s: light industries and warehouses
1970’s: de-industrialized; became anoffice/commercial town
1986: Expo86
1987: a large portion sold to Concord Pacific; rapid developments began
2006: construction of Canada Line started
Find a pattern of gentrification
Explore the possibility to combine change in land use and property value
Examine the different factors to gentrification and redevelopment◦ Zoning
◦ History
◦ Immigration
◦ Etc.
Nelson, Seymour, Beach Crescent and Marinaside Crescent
Defined in Yaletown, a walking tour through history
Focus on the older warehouse streets
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From the database◦ Geography files e.g. land use, roads, etc.
◦ Census data (1986)/2001
Digitized materials◦ Ariel photos from GIC 1984/2004
◦ On-screen digitization
BC Assessment◦ Land use
◦ Property values 1986/2007
data
digitization
analysis
results
Collect data from various sources Create a polygon
shapefile contains all of the buildings
Input the values of each building using keyboard
Census data: join, export, explore, etc.
Regression model
Redevelopment Index
Gentrification ratio
To determine land use in 1984◦ BC Assessment microfiche
Act Use, Plan #, assessment components
◦ Ariel photo
To determine which addresses are together in one building◦ BC Assessment
2007: roll #, guide maps
1986: assessment style, address, aerial photo
◦ Survey
addressRoll number
Roll Number = 029-138-64-93-0000
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Microfiche 2007 171~189
Microfiche 2007 67~69
5 x 13 x 12 x 21◦ more than16000
entries
◦ 2-week-long process
◦ Predictably many errors
Gentrification◦ Ratio as opposed to increase
◦ Makes the number more significant
◦ Simple vs. adjusted
Simple gentrification ratio = property value 2007 / property value 1986
Adjusted gentrification ratio = (property value 2007 / property value 1986) / average inflation in property value of Vancouver
Provides a comparison to the rest of the city
Keeps the original ratios
Combined development indicator◦ Adjust gentrification ratio / redevelopment index
◦ To find a way integrate change of land use and increase in property value
Regression model◦ To examine the correlation between proximity to
water and property price
Other factors: history, zoning policies etc.
Centroid instead of polygon◦ An attempt to solve the MAUP problem
◦ Tools in GIS require data to be in points
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Census data◦ Explore
◦ Clip
◦ Join / relate
◦ Field Calculation
◦ Normalization
◦ Etc.
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Overall idea◦ Gentrification should be measured with change in
land use?
◦ Redevelopment indicator: lack of rationale
◦ Gentrification= both commercial and residential
Jack Cockwell @ BC Assessment
Dr. David Ley
Geography project or an example of GIGO?◦ Absence of reliable data
◦ Calculation errors
◦ BC Assessment: too many changes
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Broader area
Incorporate more demographic components
Separate commercial and residential
Run a different redevelopment index
Regression with factors other than the one examined in this project
Census 2006
Explored the possibility to combine change of land use and increase in property value
Overall gentrification is present throughout the area, but more dramatic in the land bought by Concord
A strong relation between gentrification and ethnic diversification
Many improvements can be made to the project, both ideological and practical