Method and device for constructing river diatom water bloom early warning model

Abstract

The invention discloses a method and a device for constructing a river diatom water bloom early warning model. The method comprises the steps of: carrying out analysis according to river hydrologicalelement data, water quality element data and algae density to obtain key impact factors of a river diatom water bloom early warning model; performing fusion according to a key influence factor data set to obtain a sample set of a support vector machine; performing optimization calculation on parameters of the support vector machine by using a genetic algorithm to obtain an optimal solution of theparameters of the support vector machine; and constructing the river diatom water bloom early warning model according to the sample set of the support vector machine and the optimal solution, and carrying out water bloom early warning. By implementing the method, a support vector machine algorithm is applied, so that the operation is more efficient, the early warning timeliness is improved, meanwhile, the adopted genetic algorithm can consider the dynamics of population evolution, the optimal solution can be quickly and accurately found, the model efficiency and the calculation precision are improved, and the method has good practicability.

Description

technical field [0001] The invention relates to the technical field of water ecology, in particular to a method and device for constructing a river diatom bloom early warning model. Background technique [0002] Algal blooms and eutrophication typically occur in slow-moving bodies of water such as lakes and reservoirs, and are less common in large flowing rivers. Therefore, the existing water bloom prediction technology is generally focused on the water body of lakes and reservoirs, and there are relatively few predictions and early warnings for diatom bloom outbreaks in large rivers. However, the outbreak mechanism of river eutrophication is very complex in real scenarios. Especially under the influence of climate change and strong human activities, changes in the discharge flow caused by inter-watershed rainfall and gate and dam regulation will lead to changes in the hydrological regime of the river, which may affect the The degree of eutrophication of rivers has adverse ...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a river diatom bloom warning method and device to solve the problem of low prediction accuracy of large-scale river bloom prediction models in the prior art

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