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Nitrogen and phosphorus inputs to the Black Sea in 1970-2050

机译:1970-2050年向黑海输入的氮和磷

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摘要

Increased nitrogen (N) and phosphorus (P) inputs are major causes of eutrophication in the coastal waters of the Black Sea. The objective of this study is to analyze the past and future trends in river export of nitrogen and phosphorus to the coastal waters of the Black Sea and to assess the associated potential for coastal eutrophication. The Global NEWS-2 (Nutrient Export from Watersheds) model was used for this purpose. Currently, most eutrophication occurs in the North Black Sea and the Azov Sea. In the future, however, this may change. We analyzed trends up to 2050 on the*basis of the Millennium Ecosystem Assessment (MEA) scenarios. The results indicate that nutrient loads in rivers draining into the North Black Sea and the Azov Sea may decrease in the coming decades as a result of agricultural trends and environmental policy. However, in these scenarios, the targets of the Black Sea Convention are not met. In the South Black Sea, there is currently little eutrophication. But this may change because of increases in nutrient inputs from sewage in the future.
机译:氮(N)和磷(P)输入增加是黑海沿岸水域富营养化的主要原因。这项研究的目的是分析氮和磷向黑海沿海水域的河流出口的过去和未来趋势,并评估沿海富营养化的相关潜力。为此,使用了全球NEWS-2(流域养分出口)模型。目前,大多数富营养化发生在北黑海和亚速海。但是,将来可能会改变。我们根据千年生态系统评估(MEA)情景分析了直至2050年的趋势。结果表明,由于农业发展趋势和环境政策的影响,流入北黑海和亚速海的河流中的养分含量在未来几十年可能会减少。但是,在这些情况下,《黑海公约》的目标没有实现。在南黑海,目前几乎没有富营养化。但这可能会因为将来污水中养分投入的增加而改变。

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  • 来源
    《Regional Environmental Change》 |2013年第1期|179-192|共14页
  • 作者单位

    Environmental Systems Analysis Group, Wageningen University, Droevendaalsesteeg 4, 6708 PB Wageningen, The Netherlands;

    Environmental Systems Analysis Group, Wageningen University, Droevendaalsesteeg 4, 6708 PB Wageningen, The Netherlands,School of Science, Open University of the Netherland, Valkenburgerweg 177, 6419 AT Heerlen, The Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    river export; nitrogen; phosphorus; the black sea; eutrophication;

    机译:内河出口;氮;磷;黑海富营养化;

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