南京市江北工业区大气污染物对主城的影响

利用2007年遥感卫星土地利用图,使用autocad制图工具,依据大气污染物扩散规律,绘制出不同风向时南京市江北工业区大气污染物扩散、输送区域.在16个风向中,其中有6个风向对南京市主城有影响,风向分别是NNE、N、NNW、WN、WNW和W.依据1961～2000年风向玫瑰图,江北工业区的大气污染物扩散、输送区域从全年风向频率来看并不在主城的主导风向上,即使从冬季风向频率来看也不在主导风向上.但是,该区域对主城大气污染的影响是明显的,在冬季影响较大.

The Impact of Air Pollutants from the Industrial Area on the North Bank of the Yangtze River on the Main City of Nanjing

Data collected by means of the land use satellite images in 2007 indicates the spreading law of air pollutants from the industrial area on the north bank of the Yangtze River to Nanjing City proper with different directions of wind.Among 16 directions of wind,there are 6 ones that affect the main city of Nanjing： NNE,N,NNW,WN,WNW,and W,even though none of them is the leading wind in a year.It is concluded that the industrial area on the north bank of the Yangtze River is responsible for a large proportion of air pollution in Nanjing,especially in winter.