Chambers Patricia A, Vis C, Brua R B, Guy M, Culp J M, Benoy G A
Environment Canada, 867 Lakeshore Blvd., Burlington, Ontario L7R 4A6, Canada.
Water Sci Technol. 2008;58(11):2203-10. doi: 10.2166/wst.2008.815.
Inputs of nutrients (phosphorus, P, and nitrogen, N) to coastal and fresh waters can accelerate eutrophication, resulting in excessive aquatic plant growth, depletion of oxygen, and deleterious changes in abundance and diversity of organisms. Using long-term (approximately 1995-2005) monitoring data from agriculturally-dominated watersheds in southern Ontario and Quebec, Canada, we developed and tested several approaches for setting targets for N and P. Our research showed that it is possible to set scientifically-credible targets for total P and total N to protect ecological condition of streams in agricultural landscapes, and define achievable targets attainable following adoption of beneficial management practices.
向沿海和淡水水体输入营养物质（磷，P，和氮，N）会加速富营养化，导致水生植物过度生长、氧气耗竭以及生物数量和多样性的有害变化。利用加拿大安大略省南部和魁北克省以农业为主的流域的长期（约1995 - 2005年）监测数据，我们开发并测试了几种设定氮和磷目标的方法。我们的研究表明，有可能为总磷和总氮设定科学可信的目标，以保护农业景观中溪流的生态状况，并确定在采用有益管理措施后可实现的目标。
