Intelligent distinguishing method and intelligent distinguishing device for nutritional status of lakes and reservoirs
A nutrient status, lake and reservoir technology, applied in measuring devices, instruments, surveying and navigation, etc., can solve problems such as useless consideration and lack of fully automated functions, and achieve the effect of controlling costs and improving accuracy
Active Publication Date: 2013-11-20
CHINA THREE GORGES CORPORATION
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Problems solved by technology
However, this patent is mainly an auxiliary processing technology for remote sensing information to participate in eutrophication evaluation, which can only replace the eutrophication identification method based on laboratory sample analysis, and does not have fully automated functions from automatic water quality monitoring to intelligent identification , there is no need to consider the impact of geographical attributes on different types of lakes in the discriminant method
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Embodiment 1
[0043] This embodiment provides an intelligent method for judging the nutritional status of lakes and reservoirs, the process is as followsfigure 1 shown, follow the steps below:
[0044] (1) In the target waters of lakes and reservoirs, measure water body transparency, chlorophyll a, total phosphorus and total nitrogen concentration; the frequency of measurement is not less than once per week, and each measurement operation is not less than 4 weeks. Take the average value of the sequence;
[0045] (2) In the target water area of lakes and reservoirs, conduct surveys and surveys on geographical attributes such as longitude, latitude and elevation, query the "World Map" and "World Climate Zone Distribution Map" and determine the geographical divisions they belong to as "frigid zone" and "cold zone" according to the elevation. One of the "inland mountainous area", "inland plain area", "coastal area" and "arid and transitional area"; the following table shows the correspondence...
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The invention belongs to the technical fields of environmental protection and comprehensive utilization of resources, and relates to an intelligent distinguishing method and an intelligent distinguishing device for nutritional status of lakes and reservoirs. The method includes: introducing geographical attributes into traditional parameter distinguishing, using principal component analysis to determine status standards of the lakes and reservoirs of different regions, and performing a first distinguishing; using a data driven method to analyze nonlinear features of the nutritional status of the lakes and reservoirs and performing a second distinguishing; and performing optimization to results according to ratio of nitrogen and phosphorus. By the method, demanded quantity of data for water quality monitoring is reduced and accuracy of distinguishing is enhanced evidently. The intelligent distinguishing device based on the method uses technologies such as automatic geographic positioning, automatic water quality detection, and computer automatic control, so that fast, accurate, intelligent distinguishing of the nutritional status of the lakes and reservoirs is achieved.
Description
technical field [0001] The invention belongs to the technical field of environmental protection and resource comprehensive utilization, and relates to an intelligent discrimination method and device for the nutritional status of lakes and reservoirs. Background technique [0002] Poor water exchange in lakes and reservoirs makes it easy to suffer from excessive nutrient salts to form eutrophication, which in turn induces excessive algal blooms and causes algal blooms. The eutrophication of lakes and reservoirs in the world has exceeded 50%. Most of the lakes and reservoirs in the Yangtze River Basin, Yunnan-Guizhou Plateau, Northeast China and Mongolia-Xinjiang region have reached eutrophication or are about to become eutrophic, causing incalculable economic losses. Maintaining the healthy water environment of lakes and reservoirs has become one of the core issues of sustainable social and economic development. Only by quantitatively, accurately and quickly judging the nutri...
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IPC IPC(8): G01N33/18G01C13/00
Inventor 戴会超毛劲乔柯云吴建华
Owner CHINA THREE GORGES CORPORATION