In order to realize the spatial equilibrium and dynamic regulation of water resources at different time scales in the future, a complete and rigorous model system for “defining city, land, population, and industry based on water”, suitable for balance measurement and dynamic control of water resources in different provinces and cities, was created. The total regional water consumption was predicted by the support vector machine (SVM) model based on fuzzy information granulation window, the regional sub-water consumption was predicted by the autoregressive-SVM model based on time series similarity analysis, and uncertainty of the two types of data was analyzed. Complex regression functions were constructed to predict various water use indicators in different scenarios, which were used as future water use indicators under current water use pattern after statistical test. Then, a water resources carrying capacity model of “defining city, land, population, and industry based on water” and a water resouces spatial equilibrium model were constructed, and three indicators including the water resources loading coefficient, water consumption efficiency, and matching factor of water and soil resources were selected based on the future total water consumption, future sub-water consumption, and future water use indicators, to quantify the spatial equilibrium degree of water resources in combination with the Gini coefficient and analyze the future equilibrium degree of water resources under current water use pattern. Finally, an optimization model was constructed, with minimization of the Gini coefficient as the objective function, to adjust the future water use pattern and realize dynamic regulation of water resources. The model system can realize the spatial equilibrium and dynamic regulation of water resources at different time scales in the future.

The "defining city, land, population, and industry based on water" (DCLPIW) regulation and control model based on water resources spatial equilibrium constructed in previous research was used to carry out applied research of water resources spatial equilibrium dynamic regulation of Linyi City, Shandong Province. The spatial equilibrium of water resources in different districts (counties) in the future was explored based on the forecast results of water consumption and water use indicators, and dynamic regulation of future water consumption was conducted on different time scales. The results show that the regulation and control model is highly reliable and universally applicable, and future water resources in Linyi City are in an absolute spatial equilibrium state under the current water use pattern, only the water and soil matching coefficient is in a general equilibrium state. The dynamic regulation of future water consumption of different types in various districts (counties) can make the spatial equilibrium indicators of water resources in Linyi City reach the absolute equilibrium state on different time scales. Under the constraints of DCLPIW and spatial equilibrium of water resources, Linyi City is expected to realize dynamic equilibrium of water consumption based on the long- and short-term dynamic regulation of water consumption in the future.