Impact of Drought Events on the Quality of Surface Water in Nenjiang Basin

This paper analyzes the impact of the four periods of drought, the first rainfall after the drought, the normal water period and the high water period on the water quality of Nenjiang Basin, and clarifies the response and change mechanism of each water quality index in the water body to the drought event, the indicators sensitive to drought events are determined, which provides a scientific basis for evaluating and comprehensively dealing with the impact of drought on water environment, to achieve environmental benefits, social benefits, economic benefits.