Construction Of Assessment Index System Of River And Lake Connectivity Based On Ecological Carrying Capacity And Ecological

River-lake connectivity is the basic condition for the smooth flow of material flow, energy flow, information flow, and species flow between rivers and lakes in river basins, and rivers and floodplains. In terms of river-lake system connectivity, the natural connectivity between rivers and lakes ensures the smooth flow of water and water between rivers and lakes, and maintains the minimum water storage capacity of lakes and the exchange of nutrients between rivers and lakes. In terms of connectivity between the river and the floodplain, the connection between the river channel and the beach zone allows the flood season to overflow the main channel and flood the beach area, transport nutrients for the beach, and promote the growth of the beach vegetation. River and lake connectivity is one of the important reasons that affect ecological carrying capacity and ecological security. Rivers and lakes are divided into structural connectivity and material-energy connectivity. This paper establishes a vertical, horizontal and vertical structure connectivity index system based on ecological carrying capacity and ecological security Through the hydrological and geomorphological, water quality and river biological indicators system, the importance of the material-energy connectivity of rivers and lakes to ecological carrying capacity and ecological security is analyzed. The following conclusions have been drawn: The assessment of the connectivity of rivers and lakes is an important aspect of assessing ecological carrying capacity and ecological security The construction of a complete evaluation system for rivers and lakes connectivity is of great significance in evaluating ecological carrying capacity and ecological security.