Investigation of Soil Pollution by Remote Sensing Under the Background of Rapid Urbanization in Dangtu County

Dangtu County is an economically developed county in the eastern part of Anhui province. With the rapid development of urbanization in recent years, the land use type of Dangtu County is also changing rapidly, which brings a series of ecological and environmental problems such as soil pollution. Based on the characteristics of urbanization development and the spatiotemporal changes of land use types in Dangtu County in recent years, this paper uses remote sensing technology to classify land use types by maximum likelihood method. On the basis of land use classification in Dangtu County, combined with social and economic development and urban land use planning, soil pollution in Dangtu County was divided into four levels, namely, high pollution area, medium pollution area, low pollution area and unpolluted area, and the range of pollution levels was delineated.