In the recent decade, with the extensive opening of Pudong New Area and the rapid increment of economy in Shanghai, the new large-scale exploitation along Shanghai coastal zone is on the upsurge, which resulted in the complete change of the original land-use structure.

Eighteen sediment cores collected from the estuarine and coastal zone of Shanghai City(from the northernmost point-Liuhe(Estuary-) to the southernmost point-Jinsiniang Bridge of Hangzhou Bay) were analyzed to investigate sediment acid-volatile sulfide(AVS) content and its vertical profile and spatial distribution characteristics.