Why is the water quality inside the Pearl River Estuary in dry season greater than that outside the Pearl River Estuary in Feng Shui area?

The distribution law can be described according to the isoline in the map, pointing out the spatial direction of decrease or increase, and the differences in different seasons in the same area. This paper expounds the measures for improving water quality from the angles of source ecological protection, pollutant control, water dilution and artificial salvage.

So the answer is: distribution law: the pollution degree decreases from north to south; The decline in dry season is greater than that in rainy season; In the Pearl River Estuary, the water pollution in dry season is more serious than that in wet season. Outside the Pearl River Estuary, water pollution is more serious in wet season than in dry season.

Measures: Strengthen the protection of ecological environment in the Pearl River basin and reduce pollutants in the Pearl River; Sewage discharged from industry, life and mariculture in the coastal areas of the Pearl River Estuary is discharged after purification; Reservoirs in the Pearl River Basin release water in dry season to increase runoff and dilute pollutants. Salvage floating garbage in the Pearl River Estuary regularly.