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1 December 2004 Soil Functional Responses to Excess Nitrogen Inputs at Global Scale
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Abstract

There is little evidence that nitrogen (N) cycling in the highly weathered, low-phosphorus (P), acidic soils found in Southern Hemisphere continents will differ greatly from that in North America and Europe. Evidence from the ‘south’ shows: the similarity in forms and temporal patterns in losses of N from different land uses; that the C:N ratios of the forest floor/litter layer from different continents are strongly predictive of a range of processes on a global scale; that generalizations based on Northern Hemisphere experience of the impact of N additions to ‘P-limited’ ecosystems are likely to fail for southern ecosystems where anatomical and physiological adaptation of native plants to low-P soils makes questionable the concept of ‘P-limitation’; that the greatest threats in the ‘south’ are probably changes in land use that may greatly increase N inputs and turnover; that localized increases in N inputs produce similar effects to those seen in the ‘north’.

Mark Adams, Phil Ineson, Dan Binkley, Georg Cadisch, Naoko Tokuchi, Mary Scholes, and Kevin Hicks "Soil Functional Responses to Excess Nitrogen Inputs at Global Scale," AMBIO: A Journal of the Human Environment 33(8), 530-536, (1 December 2004). https://doi.org/10.1579/0044-7447-33.8.530
Accepted: 1 September 2004; Published: 1 December 2004
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