NDLI: Spatially distributed pesticide exposure assessment in the Central Valley, California, USA.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Luo, Yuzhou Zhang, Minghua
Spatial Coverage	California
Description	Country affiliation: United States Author Affiliation: Luo Y ( Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, USA.)
Abstract	Field runoff is an important transport mechanism by which pesticides move into the hydrologic environment of intensive agricultural regions such as California's Central Valley. This study presents a spatially explicit modeling approach to extend Pesticide Root Zone Model (PRZM), a field-scale pesticide transport model, into basin level. The approach was applied to simulate chlorpyrifos use in the Central Valley during 2003-2007. The average value of loading as percent of use (LAPU) is 0.031%. Results of this study provide strong evidence that surface runoff generation and pesticide application timing are the two influencing factors on the spatial and temporal variability of chlorpyrifos sources from agricultural fields. This is one of the first studies in coupling GIS and field-scale models and providing simulations for the dynamics of pesticides over an agriculturally dominated landscape. The demonstrated modeling approach may be useful for implementations of best management practice (BMP) and total maximum daily load (TMDL).
File Format	HTM / HTML
ISSN	02697491
Issue Number	5
Journal	Environmental Pollution
Volume Number	158
e-ISSN	18736424
Language	English
Publisher	Elsevier
Publisher Date	2010-05-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Discipline Science Environmental Monitoring Methods Geographic Information Systems Pesticides Analysis California Evaluation Studies Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Pollution Medicine Toxicology

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