Ecological risk evaluation of heavy metals in sediments of east Jiaozhou bay based on trapezoidal fuzzy numbers
JIA Fang-li, WANG Yan
Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environment Science and Engineering, Ocean University of China, Qingdao 266100, China
Abstract：The data about heavy metals in sediments of Jiaozhou bay in papers published publicly about recent 10 years were collected and analyzed.And the heavy metals' potential ecological risk evaluation model was built based on trapezoidal fuzzy numbers.The results indicate that the pollution level of every heavy metal is large-span,especially Zn.The ecological risk of Hg and Cd in east Jiaozhou bay is at low-high level,it is high-utmost high and high-very high risk in Haibo estuary,other heavy metals is at low risk. The integrated ecological risk of heavy metal in sediment of east Jiaozhou bay and Haibo estuary is at low-high and high-very high level risk,and the possibility belonging to medium and high risk level is bigger than that of others level.The risk of Hg and Cd should be paid more attention to in the heavy metals' ecological risk evaluation.
JIA Fang-li,WANG Yan. Ecological risk evaluation of heavy metals in sediments of east Jiaozhou bay based on trapezoidal fuzzy numbers[J]. Marine Environmental Science, 2016, 35(6): 876-881.
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