Fuzzy Evaluation Method of Highway Green Construction in Ecological Protection Area Based on PSR Model

In view of the special conditions of cold and drought ecological protection areas in northwest China, the existing evaluation indexes of green construction are not comprehensive. Therefore, on the basis of 'four saving and one environmental protection', the evaluation system adds the first-level indicators of green construction management and the second-level indicators such as natural ecological protection areas, animal and plant resources protection, and water source protection, and proposes a highway green construction evaluation system that conforms to the natural environment and construction characteristics of ecological protection areas. The evaluation system can be converted into PSR model, which verifies the rationality of the evaluation system. The fuzzy comprehensive evaluation method is used to evaluate the green construction grade, and the results are compared with those of the extension matter-element method. By changing the weight of different indicators, it is found that the change of the weight of the first-level indicators has little effect on the results, and the change of the weight of the second-level indicators has a greater impact on the results. Finally, compared with the ' four saving and one environmental protection ' evaluation system, it is found that the new system has great advantages in the green construction evaluation of ecological protection areas.