River and lake shorelines and inland river bottomland are not only the important transition zone between terrestrial and aquatic systems in nature, but also the key area to maintain the ecological health of river and lake systems, as well as the important basis for the economic and social development along the coast. In the dynamic evolution, the contradiction between the protection and utilization of river and lake shorelines and bottomland is apparent, such as the use and disorder of shoreline, the use of deep water instead of shallow water, the encroachment of river channel and normal flood discharge, the natural evolution and river potential control, the connection between rigid bank protection and material, and in particular the cumulative effects of unreasonable development influence flood control, water supply, shipping and ecological environment seriously, and even harder to repair. With the coordinated promotion of ecological priority and green development concept, it is an urgent need and development trend to study the key technology of efficient utilization and protection of river and lake shorelines and inland river bottomland resources. The national key research and development project "research on key technology for efficient utilization and protection of river and lake shorelines and inland river bottomland" is to put forward the theoretical methods for the classification and functional impact assessment of river and lake shorelines in China, to coordinate the protection and utilization mode of river and lake shoreline in the dual demands of ecological environment protection and economic development, develop river water and shoreline dynamic monitoring and function assessment techniques, build a dynamic monitoring pattern and service platform on the river lake, and provide scientific and technological support for the construction of ecological shoreline and safe shoreline. The project will take a multi-disciplinary, multi-means, multi-method integrated technical route, from the basic theory, key technology and demonstration and application of three levels to carry out research. Through the project study, it is expected to propose three new methods of classification, determination and function evaluation theory of river and lake protection shorelines in China, develop and establish 4 sets of new technical systems, such as monitoring technology and functional assessment system for river and lake waters and shorelines, protection and utilization technology and evaluation index system for shorelines and shoals of rivers and lakes that coordinate ecological environmental protection and economic development, construct a river and lake shoreline dynamic supervision service platform meeting the management requirements of level 4 "river and lake length system", and carry out demonstrations in five representative river and lake reservoirs, including urban river Banks, rural beaches, delta river networks, plateau urban lakes and important water sources. Results will also promote dynamics of rivers and lakes, riverbed evolution, water ecology, water conservancy planning such as academic progress, the depth of the water conservancy and internet integration for the coastline of lakes and river bottomland and direct-cleaning coastline of efficient utilization of resources, provide strong technical support for the scientific protection management, and has significant social and economic and ecological environment benefit.
