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    Author(s): N. Duarte; L.H. Pardo; M.J. Robin-Abbott
    Date: 2013
    Source: Water, Air and Soil Pollution. 224: 1355.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (1.1 MB)


    The objectives of this study were to assess susceptibility to acidification and nitrogen (N) saturation caused by atmospheric deposition to northeastern US forests, evaluate the benefits and shortcomings of making critical load assessments using regional data, and assess the relationship between expected risk (exceedance) and forest health. We calculated the critical loads of nutrient N and of sulfur (S)+N using the steady-state mass balance method at >4,000 regional and national vegetation and soil monitoring network plots in the northeastern USA. Regional calculations of critical loads necessitate use of soil maps which provide a range for each soil characteristic resulting in a broad range of critical load of S+N and exceedance values.

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    Duarte, N.; Pardo, L.H.; Robin-Abbott, M.J. 2013. Susceptibility of forests in the northeastern USA to nitrogen and sulfur deposition: critical load exceedance and forest health. Water, Air and Soil Pollution. 224: 1355. DOI: 10.1007/s11270-012-1355-6.


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    acidification, base cation depletion, forest health, N saturation, simple mass balance model

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