Thank you Admiral Watkins and commission members for allowing me this opportunity to draw your attention to two recent reports of the National Academies that address what are arguably two of the most significant challenges to coastal and marine environmental quality: oil pollution and nutrient pollution. A decade ago public concerns about marine pollution were driven by the dramatic footage fro...

Non-point source pollution is widely considered a serious threat to drinking water. Eutrophication in Chinese watershed is mainly due to nitrogen and phosphorus output from agricultural source. Taihu Lake is a typical eutrophic lake in China, a basin representative for the study of the temporal-spatial characteristics of pollution loading of nitrogen and phosphorus to provide scientific basis f...

Eutrophication is one of the harmful phenomena which affects continental water (rivers, lakes, springs, etc.) due to injection N and P. If it easy manage point source pollution, non-point pollution still represents a challenge. Management practices such as tillage technics, fertilizer management, wetlands appear solutions remove P from runoff water.

drastic model has been used to map groundwater vulnerability to pollution in many areas. since this method is used in different places without any changes, it cannot consider the effects of pollution type and characteristics. therefore, the method needs to be calibrated and corrected for a specific aquifer and pollution. in the present research, the rates of drastic parameters have been correct...

Currently, the treatment of point source pollution has been basically com-pleted, and development non-point pollution(NPP) become a new threat to natural water. Unlike pollution, NPP is much more complex than in terms difficulty measures. Therefore, gradually focus researchers’ attention. This paper mainly reviews current research status on governance NPP, precisely urban agricultural governanc...