期刊
MARINE POLLUTION BULLETIN
卷 164, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.112003
关键词
Heavy metal pollution; High-risk area; Uncertainty; Ordinary kriging; Indicator kriging
资金
- National Natural Science Foundation of China [41571486]
- Interdisciplinary Research Funds of Beijing Normal University
In different seasons, the high-risk areas of Cr, Cd, and Hg pollution in sediments of the Yangtze River estuary were relatively high, with Cr pollution being the most severe, while there were discrepancies between the OK and IK results.
In this study, ordinary kriging (OK) and indicator kriging (IK) were used to analyze the uncertainty associated with high-risk areas of seven heavy metals (As, Cd, Cr, Cu, Hg, Pb, and Zn) in sediments of the Yangtze River estuary during four seasons. The OK results showed that the high-risk areas of Cd, Cr, Cu, Hg, and Pb had a high proportion, with the highest corresponding to Cr pollution (up to 60%). Predictions based on IK revealed that the proportion of high-risk areas of Cr, Cd, and Hg pollution were high, especially that of Cr was higher than 90%. However, there were uncertainties between the OK and IK results. The uncertainty results revealed that the uncertainty areas of Cr pollution were relatively large, accounting for about 30%, while those of Cd, Cu, and Hg pollution were lower than 10%.
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