Title: Geographic sampling of urban soils for contaminant mapping: how many samples and from where 
Resource Type: document --> technical publication --> journal article 
Country: USA 
Year: 2008 
Availability: Environmental Geochemistry and Health 30 (6) 495-509 10.1007/s10653-008-9186-5 
Author 1/Producer: Daniel A. Griffith 
Author / Producer Type: University research group / research institute 
ISSN: 0269-4042 (Print) 1573-2983 (Online) 
Article Weblink (=direct link): http://www.springerlink.com/content/31rk5t61j94178wl/?p=59ff ...  
EUGRIS Keyword(s): Contaminated land-->Information management systems-->Predictive modelling
Contaminated land-->Site investigation-->Sampling strategy
Short description: EXTRACT 'Properly sampling soils and mapping soil contamination in urban environments requires that impacts of spatial autocorrelation be taken into account. As spatial autocorrelation increases in an urban landscape, the amount of duplicate information contained in georeferenced data also increases, whether an entire population or some type of random sample drawn from that population is being analyzed, resulting in conventional power and sample size calculation formulae yielding incorrect sample size numbers vis-à-vis model-based inference.' 
Submitted By: Professor Paul Bardos WhoDoesWhat?      Last update: 27/10/2008

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