Method and device for confirming indicative water quality monitoring stations of lakes and reservoirs based on remote sensing images

Abstract

The invention discloses a remote sensing image-based lake and reservoir indicative water quality monitoring station confirming method and a remote sensing image-based lake and reservoir indicative water quality monitoring station confirming device, and belongs to the field of water quality monitoring. The method comprises the following steps: acquiring multi-view remote sensing images of a lake and reservoir at different times; performing pre-processing and cutting to obtain remote sensing reflectance images in a lake and reservoir region; acquiring a water quality parameter spatial distribution map, and calculating a water quality parameter threshold range; determining a plurality of groups of alternative stations according to the water quality parameter threshold range, wherein the alternative stations with the occurrence frequency from high to low are the lake and reservoir indicative water quality monitoring stations. According to the remote sensing image-based lake and reservoir indicative water quality monitoring station confirming method and the remote sensing image-based lake and reservoir indicative water quality monitoring station confirming device, average water qualityconditions of the lake and reservoir can be acquired quickly through water quality data of one or several indicative water quality monitoring stations. On one hand, the scientificity and the reasonability of the average water quality conditions of the lake and reservoir can be improved, and technical support is provided for water quality assessment and environmental management of the lake and reservoir; on the other hand, the average water quality conditions of the whole lake and reservoir can be obtained by monitoring few stations; time and labour are saved; the data acquisition convenience and economical efficiency are improved.

Description

technical field [0001] The invention relates to the field of water quality monitoring, in particular to a method and device for confirming indicative water quality monitoring sites of lakes and reservoirs based on remote sensing images. Background technique [0002] The water quality assessment of lakes, reservoirs, ponds and other water bodies (the present invention collectively refers to lakes, reservoirs, ponds and other water bodies as lakes and reservoirs) refers to the evaluation of the water quality and Appraisal using value etc. is a basic work for rational development, utilization and protection of water resources. The data for water quality evaluation is obtained from the measurement of water quality monitoring stations, and the average value of data from one or more water quality monitoring stations is used to represent the average water quality status of the entire lake. [0003] The general principle for the layout of existing water quality monitoring stations ...

AI Technical Summary

Problems solved by technology

[0004] The layout of existing stations often takes into account the monitoring needs of the functional areas of lakes and reservoirs or the monitoring needs of pollutant input and output. There is a lack of scientific proof as to whether the average water quality of monitoring stations can truly reflect the average water quality of lakes and reservoirs. When laying out stations, the layout requirements of indicative stations for lakes and reservoirs are not considered or not clearly considered.

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