大辽河河口水生态风险评估与预警体系构建

以大辽河下游河口段为研究对象,开展入海污染物通量核算技术、河口水生态响应模型以及河口生态风险评估技术研究。通过对主要污染物入海负荷核算技术方法、感潮河段水体中污染物迁移转化规律等研究,建立河口区污染物扩散模型;研究筛选河口区特征污染物的生态受体,识别敏感风险因子,确立生态风险评估指标体系,构建河口区水生态风险评估与预警模型,实现大辽河河口水环境风险评估与预警。

Based on the surveys in the lower estuary zone of the Daliaohe River, the pollutant flux flowing into the sea is estimated, the water ecological response model is constructed, and the water ecological risk is assessment. The estuary pollutants diffusion model is constructed by accounting for the main pollutants flux flowing into the sea and studying on the characters of the pollutants moving-transiting rule in tidal reach. Furthermore, the ecological receptor of featured pollutants is selected, the sensitive risk factor is recognized, the ecological risk assessment system is established, and the model of water ecological risk assessment and early warning is constructed, so as to realize the application of ecological risk assessment and early warning in the Daliaohe estuary.