Three-red-line control index division method based on water circulation simulation

Abstract

The invention discloses a three-red-line control index division method based on water circulation simulation. The method comprises the following steps of constructing a distributed binary water circulation model, acquiring data required for constructing the distributed binary water circulation model, setting the social and economic scale and the water consumption intensity of a target year, judging the standard reaching condition of a water functional area, and determining three red line control indexes when the water quality of the water functional area reaches the standard. The method is based on a binary water circulation theory, according to the method, a distributed binary water circulation model is constructed, the organic interaction relationship among the water volume, the water efficiency and the water quality is considered, the water volume and the water quality of a research area are regulated and controlled according to a water quality standard reaching rate simulation result of a water functional area, the total water consumption of an administrative area and the pollutant discharge into a river are calculated, and finally, three red line control indexes of the research area are delimited. Compared with the prior art, the method is advantaged in that the internal mechanism and relationship among the total water consumption, the water consumption efficiency and thepollution load index are fully considered, so control indexes of the three red lines are more reasonably defined.

Description

technical field [0001] The invention relates to the technical field of water resources and water environment control at the regional or basin level, and in particular to a method for dividing three red line control indicators based on water cycle simulation. Background technique [0002] The red line of total water consumption, the red line of water use efficiency and the red line of water function zone limit pollution are interconnected and affect each other. Factors may change the value of the entire red line indicator. The material and energy of the water cycle in the watershed and the water environment system undergo complex cyclic exchanges on the scale of time and space, and are intertwined and related to each other, and are directly affected by human activities. Human production activities have significantly changed the natural water cycle process, and at the same time changed the migration and transformation process of nitrogen, phosphorus and other nutrients in the...

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Problems solved by technology

[0004] (1) The SWAT model cannot reflect the adjustment of economic structure, water saving and emission reduction measures on the regulation of national economic water use and pollution discharge;

[0005] (2) The SWAT model does not sufficiently describe the simulation of the social water cycle. It can only use artificial water consumption and point source discharge as boundary conditions for input, without considering the classification of water users. Obvious shortcomings;

[0006] (3) The water consumption and pollution discharge calculated by the SWAT model are only the process quantities in the simulation, and are not counted and output as the final results

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