Study On Inversion Of Oxidized Organic Compounds Of A River Based On RS And GIS

With the rapid development of urbanization in recent years,the problem of oxidative pollution of water resources in society has become increasingly serious.The increase in the degree of oxidation of water bodies will not only cause a shortage of per capita water resources,limit regional economic development,and even threaten human health.In order to find the main factors that cause oxidative pollution in water bodies,this paper starts from the inversion of chlorophyll a,nitrogen,phosphorus,and dissolved oxygen in oxidized organic bodies in water,and combines WorldView-Ⅲ multispectral remote sensing satellite data with water quality sampling data for a trunk in Changchun.The water body of the river basin is analyzed by inversion,and the correlation function model of the spectral reflectance of the image and the oxidation-rich organic matter is constructed and the dissolved oxygen concentration is predicted and analyzed by using the BP neural network to obtain and analyze the concentration and distribution trend of the oxidation-rich organic matter in the water body.The experiment uses RS and GIS technology,using software such as Envi5.1,ArcGIS 10.2,SPSS24,Matlab2017 a,etc.,through preprocessing,mask analysis,and other processing processes,combined with a functional model for the oxidation-rich organic matter chlorophyll a,nitrogen,phosphorus,and dissolved oxygen concentration in the watershed The relevant fitting analysis is carried out,and the main causes of the water-rich oxidation pollution in the watershed are analyzed and discussed based on the information on the two sides of the river basin.It is of great significance to the water-rich oxidation pollution control in the watershed.The conclusion of the experiment is as follows:1.Due to the different absorption of nutrients by crops,the proportion of planting area between different crops will affect the degree of oxidation of water bodies.Among them,the area proportion of corn and soybean has a positive correlation with nitrogen and phosphorus content,while the area proportion of sorghum and rice has a negative correlation with nitrogen and phosphorus content.2.Urban industrial drainage will also increase the degree of oxidation of water bodies.Relevant government departments still need to strengthen the control of industrial wastewater discharge.