Potential polluted areas are often very small in size, except for some sites where the anthropogenic influence on sediments is clearly evident, due to the wide extent of local industrial and agricultural activities (e.g., the Sarno River catchment basin).

• 潜在污染区的面积往往是很小的，除非人为对沉积物的影响非常明显，主要源于当地广泛的农业和工业活动（例如亚诺河汇水盆地）。