[Discussion on several key points of decision support system for remediation of contaminated sites]

The problem of site contamination has become a focus in the environment protection field in the recent years. Decision support system (DSS) for remediation of contaminated sites is used for selecting the optimal remediation technologies and formulating economic and efficient remediation plans based on site investigation and risk assessment. This paper reviewed and analyzed the key steps in the decision-making process, including frames, models and methods. In addition, the modules and functions of more than 40 types of decision-making software in the world were evaluated and summarized. Aimed at the demand of site contamination in our country, a skeleton frame and feature were proposed in the paper, where the international experience in developed countries has been absorbed and learned.