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| Development of a GIS-based Scenario Analysis System for Pesticide Groundwater Risk Assessment in China |
| Received:April 16, 2014 |
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| KeyWord:pesticide environmental risk;scenario zone;standard scenario;GIS |
| Author Name | Affiliation | | LIN Lu | Department of Geography and Resource Management, The Chinese University of Hong Kong, Hong Kong SAR, China
International Institute of Earth System Science, Nanjing University, Nanjing 210093, China | | QIN Zhi-hao | International Institute of Earth System Science, Nanjing University, Nanjing 210093, China
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | LI Wen-juan | Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: |
| Pesticide environmental risk assessment is a key part of pesticide registration process. Here we applied the concept of standard scenario system developed by the European Union(EU) to groundwater risk assessment of pesticides used in dryland crops. Precipitation, temperature, soil organic matter and pesticide application ways were all considered as the main factors affecting environmental behaviors and soil concentrations of pesticides. Based on meteorological, soil and agricultural production data, a GIS approach was adopted to establish the standard scenario systems. They consisted of 6 scenario zones and 11 standard scenarios. The PEARL model developed by the EU for simulation of pesticide environmental risk was employed to test the established scenarios. The simulation showed pesticide Aldicarb had high environmental risk but Atrazin and Oxadixyl was relatively safe. These results show that the established scenarios would be useful for enhancing the efficiency of pesticide registration. |
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