A method for heavy metal exposure risk assessment to migratory herbivorous birds and identification of priority pollutants/areas in wetlands

作者：Liang, Jie^*; Liu, Jiayu; Yuan, Xingzhong^*; Zeng, Guangming; Yuan, Yujie; Wu, Haipeng; Li, Fei

来源：Environmental Science and Pollution Research, 2016, 23(12): 11806-11813.

DOI：10.1007/s11356-016-6372-3

• Heavy metal
• Exposure risk assessment
• Migratory birds
• Priority pollutants/areas
• East Dongting Lake wetland

Wetlands are important habitats for migratory birds but have been degraded by many anthropogenic factors including heavy metal contamination. Birds inhabiting wetlands are exposed to pollutants. In this study, a method for exposure risk assessment of migratory herbivorous birds and identification of priority pollutants/areas was developed and employed in East Dongting Lake wetland (EDT). Four heavy metals (Cr, Cu, Pb, and Cd) in sedge and soil samples from ten lesser white-fronted goose (Anser erythropus) habitats in EDT were investigated. Results showed that negative effect of Cr and Pb on lesser white-fronted goose may occur while the concentrations of Cu and Cd are considered to be relatively safe. Prioritize threats were decreased in the following sequence: Cr > Pb > Cu > Cd. Cr and Pb were considered to be the priority pollutants. Spatial interpolation based on geostatistical methods showed that Spring Breeze Lake should draw much attention. Furthermore, regions with high hazard index were identified to be priority areas of EDT for risk management.

• 出版日期2016-6
• 单位湖南大学