Construction of Loss Assessment Method of Eco-service Value in Sea Area Polluted by Chemical Leakage Accidents Based on Ecological Impact Prediction Model

Abstract

Abstract There is no unified and standardized method for assessing the loss of eco-service value in sea area polluted by chemical leakage accidents. In this study, an index system and a set of assessment procedures for the loss of eco-service value in chemically polluted sea areas are established, and an assessment method based on the ecological impact prediction model is constructed. The validity of this method is demonstrated by taking the northern coast of Hangzhou Bay, that is, the southern sea area of Jinshan District in Shanghai as an example. The conclusion of this study is that once the leakage accident of 2000 tons soluble toxic chemicals occurs in the sea area, 1860 ha sea areas may be affected, resulting in 1.68 billion economic losses; once the leakage accident of 5000 tons oil-insoluble toxic chemicals occurs, 34000 ha sea areas may be affected, resulting in 2.61 billion economic losses.