Optimal layout method of water quality monitoring sections in lakes, reservoirs and river basins based on comprehensive hierarchical clustering

Abstract

The invention belongs to the field of monitoring and control of water environments, and discloses a method for optimizing layout of a lake, reservoir and river basin water quality monitoring cross section based on comprehensive layering clustering. The method comprises the following steps of firstly, according to the originally collected water quality monitoring data, establishing a standard matrix, and calculating the similarity between the data variables by five distance algorithms, so as to obtain a close and distant relationship of the variables; automatically clustering a data set by four connecting algorithms; using a weighted Pearson correlation coefficient as a judging criterion to select the optimal combination for layering clustering; finally, generating a corresponding optimal clustering tree matrix to optimize and arrange a cross section monitoring station, so as to obtain the monitoring data for reflecting the whole water quality of the water domain, and improve the monitoring quality of the water environment. The method has the advantages that the convenience, simplicity and rapidity are realized, the result is visual, and the feasibility is higher.

Description

technical field [0001] The invention belongs to the technical field of water environment monitoring and treatment, and relates to a method for optimal layout of water quality monitoring sections of lakes, reservoirs and watersheds based on comprehensive hierarchical clustering. Background technique [0002] In recent years, in the field of water environment monitoring and governance technology, how to optimize the layout of water quality monitoring sections has attracted extensive attention from researchers. The traditional cross-section monitoring of lakes and reservoirs is arranged according to the principle of evenly distributed water body area, that is, the water area of ​​lakes and reservoirs is evenly divided into grids of fixed size (usually 2 square kilometers), and the monitoring is carried out at the center of each grid point. Although this method is simple and feasible, it often leads to similar water quality monitoring results in adjacent sections, resulting in ...

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Problems solved by technology

But its disadvantage is that the choice of distance measurement method and connection method is relatively simple. For different data characteristics in different water areas, it is impossible to adaptively select the best method to obtain the optimal layout of water quality monitoring sections with the best effect.

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