Research Evolvement of Small Watershed Pollution Management and Evaluation Model

With the development of the society and economy,the water pollution is becoming more serious in China,and controlling water pollution effectively becomes the emphasis of the environmental protection.This paper introduced the influencing factor of the non-point pollution in small watershed,then proposed some pollution control countermeasures,and preliminarily summarized the research on small watershed in the worldwide,such as landform effect,the pollutant constitution and the outflow characteristics,the model design and application of small watersheds.Though these analysis,we wish to provid some reference for the water environment pollution treatment in China.