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(28-06) Using Spatial Information to Examine the Landscape for Risk Assessment Purposes. Holmes, Chris*,1, Kay, S.1, Hendley, P.2, Sweeney, P.3, 1 Waterborne Environmental Inc., Leesburg, VA, USA2 Syngenta Crop Protection, Inc., Greensboro, NC, USA3 Syngenta, Jealott's Hill, /, UK ABSTRACT- Geographic Information Systems (GIS) and remotely sensed data may be combined to construct risk assessments at the regional and potentially national level. These landscape-level approaches provide the means to perform higher tier risk assessments, when process-based or generic modelling alternatives require augmentation. The use of site specific spatial data allows the risk assessment to be targeted at regions of interest or concern. Five areas were selected for analysis and a series of landscape level data sets were developed to aid in surface water risk assessments in the EU. For each area, classification of satellite imagery provided a detailed land cover data layer. This was combined with surface water data obtained from various sources to produce GIS data layers suitable for spatial analyses that characterized the spatial relationship between agriculture and surface water. High resolution aerial imagery was also used to provide more spatially detailed information for a subset of surface water. This presentation illustrates the process of data gathering, data pre-processing and spatial analysis for one of the five sites located near Braunschwieg, Germany that covers approximately 685,000 hectares and includes more than 6,400 km of surface water. Key words: Exposure Assessment, GIS, Remote Sensing, Landscape |
