Quantitative Evaluation Method for Construction Disturbance and Ecological Restoration of Waterway Engineering and Its Application

With the increasing emphasis on ecology and environment of rivers, construction ecological waterway projects has become a development trend in China. In recent years, more attention been paid to qualitative quantitative evaluation effects construction. Based pressure-state-response (PSR) driver-pressure-state-impact-response (DPSIR) logical frameworks, this paper established state-pressure-impact-response (SPIR) conceptual model. The model took river state as main line, described disturbance pressure engineering state, impacts project comprehensive function, positive responses taken full lifetime cycle project. analytic hierarchy process (AHP) fuzzy were used study changes ecosystem status after suffering from taking responses. Taking 12.5 m deep water Taicang-Nantong section lower reaches Yangtze River an example, at different stages effort relieving negative evaluated by health level ecosystem. can provide scientific method for ecosystems.