Department of Agrosystems, Swedish University of Agricultural Sciences, Alnarp, Sweden.
Ambio. 2012 Dec;41(8):883-93. doi: 10.1007/s13280-012-0294-1. Epub 2012 May 25.
Phosphorus flows in Swedish agriculture and food chain were studied by material flow analysis. The system studied included agriculture, food consumption, related waste and wastewater from private households and municipal wastewater treatment plants. Swedish farmland had net annual phosphorus inputs of ~12, 600 metric tons (4.1 kg P ha(-1)) in 2008-2010. The total import of phosphorus in food and feed to Sweden exceed imports of phosphorus in fertilizers. Despite strict animal density regulations relating to manure phosphorus content, phosphorus is accumulating on Swedish animal farms. The total quantity of manure produced greatly exceeds imported mineral phosphorus fertilizer and almost equals total phosphorus inputs to Swedish farmland.
采用物质流分析方法研究了瑞典农业和食物链中的磷流动情况。所研究的系统包括农业、食品消费、私人家庭相关废物和废水以及城市污水处理厂。2008-2010 年，瑞典农田的净年磷投入量约为 12600 公吨（4.1 公斤 P/公顷）。磷在食品和饲料中的进口总量超过了肥料中的磷进口量。尽管与粪肥磷含量有关的严格动物密度法规，但磷仍在瑞典的养殖场中积累。产生的粪便总量大大超过了进口的矿物磷肥，几乎等于瑞典农田的总磷投入量。
