Review on the evaluation system of river regime change effect in the middle and lower reaches of the Yangtze River

Abstract In recent years, obvious changes have taken place in the middle and lower reaches of the Yangtze River, and some river regulation projects have gradually lost their original functions. Under the background of “great protection of the Yangtze River”, the rapid economic and social development along the Yangtze River and the continuous enhancement of ecological civilization construction put forward higher requirements for the Yangtze River governance research under the new situation. This paper systematically discusses the characteristics of various evaluation system research methods, introduces the main theories and advantages and disadvantages of AHP in detail, and selects flood control, shipping, beach, water resources utilization and water ecology as the evaluation indexes of APH, and summarizes the previous research results of each evaluation index under the condition of river regime change, so as to provide reference for the formulation and implementation of the control strategy of the middle and lower reaches of the Yangtze River Optimization provides theoretical support.