期刊
ENVIRONMENTAL POLLUTION
卷 259, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2019.113778
关键词
Pesticide; Nonpoint source pollution; Agricultural loss; Potential ecological risk; Spatial-temporal variability; Pesticide management
资金
- National Natural Science Foundation of China [51779010]
- Fund for Innovative Research Group of the National Natural Science Foundation of China [51721093]
- Key Laboratory of Nonpoint Source Pollution Control, the Ministry of Agriculture, P.R. China
- Interdisciplinary Research Funds of Beijing Normal University, China
In recent years, excessive application and loss of pesticides have caused great risks to the aquatic systems, but the spatio-temporal variability in the ecological risk that agricultural pesticides pose to aquatic systems has not been explored at the national scale. In this study, an integrated assessment framework was proposed for the potential ecological risk of surface water caused by agricultural pesticide loss. The spatio-temporal variability in the potential ecological risk caused by agricultural pesticide runoff was evaluated. Based on the results, the total pesticide emissions increased from 165.47 tons in 2004 to 179.77 tons in 2017. Among the three pesticide types, insecticide had the largest application, but its runoff was estimated as the lowest. High-risk areas of insecticide runoff were concentrated in the east, south and central part of China, while the central region of China was identified as a hotspot due to the high and the ever-increasing ecological risk. This study provides an integrated method for potential ecological risk assessment of agricultural pesticide runoff to adjacent water bodies in large-scale regions and the results of the study have direct implications for environmental policies on pesticide management in China and around the world. (C) 2019 Elsevier Ltd. All rights reserved.
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