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首页> 外文期刊>Environmental Science & Technology >Evaluating Causes of Trends in Long-Term Dissolved Reactive Phosphorus Loads to Lake Erie
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Evaluating Causes of Trends in Long-Term Dissolved Reactive Phosphorus Loads to Lake Erie

机译:评价伊利湖长期溶解的反应性磷负荷趋势的原因

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摘要

Renewed harmful algal blooms and hypoxia in Lake Erie have drawn significant attention to phosphorus loads, particularly increased dissolved reactive phosphorus (DRP) from highly agricultural watersheds. We use the Soil and Water Assessment Tool (SWAT) to model DRP in the agriculture-dominated Sandusky watershed for 1970-2010 to explore potential reasons for the recent increased DRP load from Lake Erie watersheds. We demonstrate that recent increased storm events, interacting with changes in fertilizer application timing and rate, as well as management practices that increase soil stratification and phosphorus accumulation at the soil surface, appear to drive the increasing DRP trend after the mid-1990s. This study is the first long-term, detailed analysis of DRP load estimation using SWAT.
机译:伊利湖重新出现有害的藻华和缺氧,引起了人们对磷负荷的极大关注,特别是高度农业流域的溶解性反应磷(DRP)增加。我们使用土壤和水评估工具(SWAT)对1970-2010年农业主导的桑达斯基流域中的DRP进行建模,以探讨最近伊利湖流域DRP负荷增加的潜在原因。我们证明,最近增加的暴风雨事件,与肥料施用时机和施肥速率的变化相互作用,以及增加土壤分层和土壤表面磷积累的管理措施,似乎在推动1990年代中期以后DRP趋势的增长。这项研究是首次使用SWAT对DRP负载估算进行长期,详细的分析。

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  • 来源
    《Environmental Science & Technology》 |2012年第19期|p.10660-10666|共7页
  • 作者单位

    School of Natural Resources & Environment, University of Michigan, Ann Arbor, Michigan 48109, United States;

    School of Natural Resources & Environment, University of Michigan, Ann Arbor, Michigan 48109, United States;

    School of Natural Resources & Environment, University of Michigan, Ann Arbor, Michigan 48109, United States,Graham Environmental Sustainability Institute, University of Michigan, Ann Arbor, Michigan 48104, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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