Scenario development is an important task for modeling pesticide environmental risk. In this paper, a GIS-based approach of establishing surface and groundwater scenarios under the land use pattern of dry land and paddy land is presented. China is a large country with significant variations in climate, soil and terrain for agriculture. To take into account the regional variability, we identified six scenario zones on the national scale based on GIS spatial analysis. For each zone, scenario locations were selected through analyzing agricultural distribution, identifying drivers of pesticide entering surface water and leaching to groundwater, and defining vulnerability concept. In total, six ground water scenarios of dry land, 2 ground water scenarios of paddy land, 2 surface water scenarios of paddy land, and natural ponds were established for modeling the Predicted Exposure Concentration in surface and ground waters in China.

Establishing surface and groundwater scenarios to assess pesticide environmental risk in China with a GIS spatial technique

248th National Meeting (2014)

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