Fig. 6: Water gaps for the four-city-excluded BTH region to achieve the two benchmarking goals (unit: billion m3).
From: Water scarcity will constrain the formation of a world-class megalopolis in North China
Left group: under the benchmarking goal of the Yangtze River Delta megalopolis. Right group: under the benchmarking goal of the Great Lakes megalopolis. The bars of different colors show the minimum water requirement under different situations of water conservation measure applications. The red line is the level of the annual average water resources in the four-city-excluded BTH region. The areas above the red line represent the water gaps for the four-city-excluded BTH region to achieve the benchmarking goals under different situations. If a bar is lower than the red line, it means the benchmarking goal is achievable under the corresponding application of water conservation measures.
