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Urban green valuation integrating biophysical and qualitative aspects
1Department of Geoinformatics - Z_GIS, University of Salzburg, Salzburg, Austria.
European Journal of Remote Sensing
|January 9, 2018
Summary
This study introduces "geons," novel units for mapping urban green spaces, improving city planning and land management. The geonscape of Salzburg, Austria, was validated using satellite data and ground-truthing.
Area of Science:
- Urban Ecology
- Geographic Information Systems (GIS)
- Remote Sensing
Background:
- Urban green mapping is crucial for city planning, land management, and assessing quality of life.
- Urban green is a complex concept with ecological, socio-economic, and policy dimensions.
- Existing methods lack scale-adapted, policy-relevant units for representing urban green.
Purpose of the Study:
- To advance urban green representation by deriving scale-adapted, policy-relevant units called geons.
- To develop a spatially explicit method for delineating uniform green valuation areas.
- To support regular monitoring schemes for urban green spaces.
Main Methods:
- Delineation of geons using optical satellite data (QuickBird and WorldView-2) for Salzburg, Austria.
- Validation through quantitative measures, spatial analysis, and ground documentation (photos, visual interpretation).
- Spatial association analysis using Global Moran's I and analysis of the final geonscape with spatial metrics.
Main Results:
- A geonscape of Salzburg was created, comprising 1083 units with an average size of 13.5 ha.
- The geon delineation was successfully validated using multiple techniques.
- Categories for different functional geon types were derived.
Conclusions:
- The geon concept provides a scale-adapted and policy-relevant approach to urban green representation.
- The methodology is suitable for regular monitoring of urban green spaces.
- Future research can refine geon derivation and analysis for enhanced urban planning.
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