Urban nitrogen and phosphorus non-point source pollution evaluation method based on remote sensing scale

Abstract

The invention provides an urban nitrogen and phosphorus non-point source pollution evaluation method based on a remote sensing scale, and particularly relates to an urban non-point source pollution evaluation method with a remote sensing pixel scale, high spatial resolution and simplified data. The urban non-point source pollution assessment method comprises the following steps: S1, constructing underlying surface space data related to typical urban nitrogen and phosphorus non-point source pollution; s2, selecting accumulation and scouring parameters in combination with an existing urban non-point source pollution database and rainfall runoff actual measurement data, and completing model localization; s3, carrying out spatial discretization on the parameters in the S2 according to the spatial database in the S1, and completing estimation of urban TN and TP non-point source pollution load remote sensing pixel scales. On the basis of existing urban non-point source pollution monitoring data, high-spatial-resolution urban non-point source pollution spatial distribution characteristics and load characteristics can be obtained on the basis of remote sensing data, and effective pollutionassessment means and important technical support are provided for urban water environment management.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a space-continuous urban non-point source pollution assessment method, in particular to a remote sensing scale-based urban nitrogen and phosphorus non-point source pollution assessment method. Background technique [0002] For a long time, my country has been faced with serious industrial wastewater and urban sewage pollution problems, and the task of prevention and control is arduous. The main work is on the control of these point source pollution. For non-point source pollution, the focus of work is mainly on the problem of agricultural non-point source pollution. For Urban non-point source pollution has not been given enough attention. Developed countries such as the United States, the United Kingdom, and the Netherlands have carried out a large number of monitoring and research work on urban surface runoff in the 1970s. The research on urban non-point source p...

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Problems solved by technology

[0005] At present, my country's pollution management departments have not yet realized the technical methods for evaluating urban nitrogen and phosphorus non-point source pollution. In view of the current situation, it is very necessary to combine the advantages of remote sensing spatial information acquisition and analysis technology to explore a set of high spatial resolution and continuous spatial estimation. Estimation Method System of Urban Non-point Source Pollution

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