Presenter: Dr. Rui Ma
Co-author(s): Dr. Yunling Li, Mr. Shinan Tang, Mr. Qifeng He, Dr. Jun He
Organisation: General Institute of Water Resources and Hydropower Planning and Design, Ministry of Water Resources
Sub-theme
1. Water-Human-Economy(Agriculture, Industry, City...)-Ecology Nexus under a Changing Environment
Topic
1-5. Water security assessment and risk management
Body
Water resource shortage is a key factor restricting ecological protection and high-quality economic and social development in the Yellow River Basin. Regional management and control based on water resource carrying status is the basis to strengthen the maximum rigid constraint of water resources, and is a powerful measure to solve the water resource shortage and the contradiction between water supply and demand in the Yellow River Basin. This paper evaluates the water resources carrying state of the Yellow River Basin from three aspects: surface water, groundwater and total water use (no overload, critical overload and overload), and takes the worst evaluation result of surface water, groundwater and total water use as the comprehensive evaluation result. On this basis, the paper puts forward the ideas and countermeasures of water resource zoning control in the Yellow River Basin according to the characteristics and problems of different zoning. The results are as follows: (1) The surface water in 13 prefectures exceeded the annual water control index, and 5 of them exceeded the tributary index (the ecological discharge water did not meet the requirements); 62 county-level administrative regions in 17 prefectures and cities have groundwater overload problems. (2) Most of the population and GDP in the Yellow River Basin are concentrated in the overload zone and the critical zone, involving 118 counties, 47% of the population and 58% of the GDP, mainly distributed in the upper reaches of the Ningmeng Reach, Hetao Plain, Fen Wei Plain in the middle reaches, and river beach areas in the lower reaches. (3) Based on the analysis results of water resources carrying capacity, the zoning control measures of "constraint inversion, optimal allocation" in the overload area and "monitoring and early warning, strict management" in the critical area are proposed to provide support for promoting the ecological protection and high-quality development of the basin.