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Urban Encroachment On the Wildlife-Urban Interface: A Comparison of Homes Prices in Two Cities of Southern California

Authors: Eric Brannen*, , Gabriel Granco, California State Polytechnic University of Pomona
Topics: Human-Environment Geography, Coupled Human and Natural Systems, Environmental Perception
Keywords: Travel Time, Wildlife-Urban Interface, Hedonic Analysis, Home Prices, Urban Encroachment
Session Type: Poster
Day: 4/8/2020
Start / End Time: 3:20 PM / 4:35 PM
Room: Virtual Track 3
Presentation File: No File Uploaded


Encroachment at the wildlife-urban interface (WUI) is a challenging issue in Southern California. The WUI is the geographic juncture at which the altered and natural environment meet. This connection is at the nexus of urban sprawl, where many issues arise. These issues include the introduction of exotic plants, subsidized species, and pressure on native food supplies. Nevertheless, people are attracted to homes where urban sprawl encroaches on the WUI. A geographically weighted regression (GWR) is coupled with hedonic analysis to create a model that will contribute to the understanding of the relationship between home prices and WUI proximity. Homes that are closer to the WUI are postulated to sell for a premium—causing the residential demand curve in the bid rent model to slope upwards at the edges of a multicentric business model. The model provides a means of investigation into the relationship between home prices and WUI proximity for the purpose of leveraging policy to combat sprawl. Specifically insight into the study area of Topanga and Santa Clarita in Los Angeles County. LA trailheads are used as a proxy to represent the WUI. WUI travel distance is calculated using the network analyst tool. The hotspot analysis tool is used to determine the degree of clustering of statistically significant high and low clustered home prices based on 50-mile buffers around the cities. City model results indicate that home prices are influenced by WUI proximity, although travel time distance loses significance at a threshold.

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