Ecological risk assessment of potential oil spill pollution in the Yellow River Estuary wetland
The Yellow River Estuary has a typical newborn wetland ecosystem in China with a very fragile environment that is highly vulnerable to terrestrial and marine pollution incidents.Based on the potential oil spill risk caused by the development and transportation of offshore oil fields near the Yellow River Estuary,this study evaluates the potential oil spill pollution risk of the estuary wetland by combining the oil spill probability model and the ecological vulnerability of the estuary.Using estuarine hydrodynamic simulation,300 combinations of wind and tide are selected as forcing conditions for oil spill simulation using stochastic scenario simulation method.The results of oil spill over 72 hours and 720 hours are simulated respectively,and then calculated the maximum reach probability and minimum reach time for the Yellow River Estuary wetland.The environmental sensitivity index is used to evaluate the wetland's sensitivity to oil spill pollution,the hazard consequence index is used to quantify the hazard degree and the risk matrix was used to quantify the risk level.The results show that the Yellow River Estuary National Park has a high probability of being polluted by potential oil spill,with a hazard consequence index value of 29 indicating a higher hazard level and a medium risk area.The probability of being polluted by potential oil spill along the estuary shoreline is lower,and the value of hazard consequence index is less than 1,which is a low risk area.
Yellow River Estuaryoil spillecological riskhazard consequencerisk matrix
万方数据
维普
