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首页> 外文期刊>Environmental Science & Technology >Assessing the Importance of Spatial Variability versus Model Choices in Life Cycle Impact Assessment: The Case of Freshwater Eutrophication in Europe
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Assessing the Importance of Spatial Variability versus Model Choices in Life Cycle Impact Assessment: The Case of Freshwater Eutrophication in Europe

机译：在生命周期影响评估中评估空间变异性与模型选择的重要性：欧洲淡水富营养化的案例

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摘要

In Life Cycle Impact Assessment (LCIA) both spatial variability and model choices may be influential.In the case of the effect model,the effect factors differ with respect to their assumption of linearonlinear responses to increases in environmental stressor levels,and whether or not they account for the current stressor levels in the environment.Here,we derived spatially explicit characterization factors of phosphorus emissions causing eutrophication based on three different effect models (depicted by marginal,linear,and average effect factors) and two freshwater types (lakes and streams) and we performed an analysis of variance (ANOVA) to investigate how the selection of the effect models and the freshwater types influence the impacts of phosphorus emissions to freshwater on heterotrophic species.We found that 56% of the variability of ecological impacts per unit of phosphorus emission was explained,primarily,by the difference between freshwater types and,to a lesser extent,by the difference between effect models.The remaining variability was attributed to the spatial variation between river basins,mainly due to the variability in fate factors.Our study demonstrates the particular importance of accounting for spatial variability and model choices in LCIA.
机译：在生命周期影响评估（LCIA）中，空间可变性和模型选择都可能具有影响力。在效应模型的情况下，效应因子关于对环境压力水平升高的线性/非线性响应的假设有所不同，无论是否在此，我们基于三种不同的效应模型（由边际，线性和平均效应因子表示）和两种淡水类型（湖泊和湖泊）推导了引起富营养化的磷排放的空间明确表征因子。流），我们进行了方差分析（ANOVA），以研究影响模型和淡水类型的选择如何影响磷排放对淡水养分物种的影响，我们发现每单位生态影响的变化率为56％磷的排放主要是通过淡水类型之间的差异来解释的，在较小程度上是通过剩余的可变性归因于流域之间的空间变化，这主要归因于命运因素的可变性。我们的研究证明了在LCIA中考虑空间可变性和模型选择的特殊重要性。

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  • 来源
    《Environmental Science & Technology》 |2013年第23期|13565-13570|共6页
  • 作者

    Ligia B.Azevedo; Andrew D.Henderson; Rosalie van Zelm; Olivier Jolliet; Mark A.J.Huijbregts;

  • 作者单位

    Department of Environmental Science,Institute for Water and Wetland Research,Radboud University Nijmegen,P.O.Box 9010,6500 GL,Nijmegen,The Netherlands;

    Department of Environmental Health Sciences,School of Public Health,University of Michigan,1415 Washington Heights,Ann Arbor,Michigan 48109,United States,Division of Epidemiology,Human Genetics and Environmental Sciences,School of Public Health,The University of Texas Health Science Center at Houston,1200 Herman Pressler,Houston,Texas 77030,United States;

    Department of Environmental Science,Institute for Water and Wetland Research,Radboud University Nijmegen,P.O.Box 9010,6500 GL,Nijmegen,The Netherlands;

    Department of Environmental Health Sciences,School of Public Health,University of Michigan,1415 Washington Heights,Ann Arbor,Michigan 48109,United States;

    Department of Environmental Science,Institute for Water and Wetland Research,Radboud University Nijmegen,P.O.Box 9010,6500 GL,Nijmegen,The Netherlands;

  • 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);
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