The global nitrogen cycle: Past, present and future |
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Authors: | James N. Galloway |
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Affiliation: | Environmental Sciences Department, University of Virginia, Charlottesville Virginia 22904, USA |
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Abstract: | Food and energy production converts N2 to reactive N species that cascade through environmental reservoirs and in the process impact human and ecosystem health. This presentation will examine the impact of increased N mobilization on the global N cycle by contrasting N distribution in the late-19th century with those of the late-20th century. The presentation will give a general overview of regional differences and will conclude with a projection of the global N cycle for 2050. |
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Keywords: | global N cycle human Nr creation N budgets consquences of N cycle alteration |
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