An empirical evaluation of the spatial accuracy of public participation GIS (PPGIS) data

Brown, Greg (2012) An empirical evaluation of the spatial accuracy of public participation GIS (PPGIS) data. Applied Geography, 34 2: 289-294. doi:10.1016/j.apgeog.2011.12.004

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Author Brown, Greg
Title An empirical evaluation of the spatial accuracy of public participation GIS (PPGIS) data
Journal name Applied Geography   Check publisher's open access policy
ISSN 0143-6228
1873-7730
Publication date 2012-05
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.apgeog.2011.12.004
Open Access Status
Volume 34
Issue 2
Start page 289
End page 294
Total pages 6
Place of publication East Park, Kidlington, Oxford, U.K.
Publisher Pergamon
Collection year 2012
Language eng
Formatted abstract
Public participation geographic information systems (PPGIS) refers to methods that seek to integrate public knowledge of places to inform land use planning and decision making. There is little published information on the spatial accuracy of PPGIS data compared to expert-derived GIS data. This study assesses the spatial accuracy of PPGIS data collected for conservation planning in two regions of New Zealand in 2011 by comparing participant mapped locations of native vegetation with areas identified in the New Zealand Land Cover Database (LCDB) Version 2. Spatial error was operationalized as PPGIS locations having no native vegetation within 1000 m. The results indicate relatively low PPGIS spatial error of about 6% compared to 22% for randomly selected point locations in the regions. Spatial error is largest in coastal regions and near population centers where native vegetation is sparse and patchy. Participant familiarity with the study region is related to spatial error and is reflected in PPGIS sampling groups, with randomly sampled households having the largest error rate and the self-selected public, the lowest error rate. The results indicate a competitive, trade-off relationship between PPGIS participation rates and spatial accuracy. Future PPGIS research should identify processes with the capacity to increase both participation and spatial accuracy concurrently.
Keyword Public participation GIS
PPGIS
Spatial accuracy
Native vegetation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 29 December 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
Official 2012 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 27 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 18 Jan 2012, 10:17:08 EST by Alexandra Simmonds on behalf of School of Geography, Planning & Env Management