Accumulation Mechanism and Prevention and Control Measures of Soil Organic Pollutants under Urban Expansion

With the acceleration of urbanization, urban expansion has led to soil pollution, particularly the accumulation of organic pollutants, which has become an important factor affecting urban environmental and ecological safety. This paper delves into the accumulation characteristics of soil organic pollutants under urban expansion, the main problems present, and the optimization strategies for prevention and control. The paper analyzes the impact of urbanization on soil organic pollutants and elaborates on the types, characteristics, and spatial distribution of soil organic pollutants. It points out issues such as the incomplete soil pollution monitoring system, weak soil pollution management, and immature organic pollutant treatment technologies. It proposes three optimization strategies: improving soil pollution monitoring and assessment systems, strengthening soil pollution prevention and control management and policy support, and promoting technological innovation and application in soil pollution treatment.