The globalization of nitrogen deposition: Consequences for terrestrial ecosystems

Pamela Matson, Kathleen A. Lohse, Sharon J. Hall

Research output: Contribution to journalArticlepeer-review

460 Scopus citations

Abstract

The sources and distribution of anthropogenic nitrogen (N), including N fertilization and N fixed during fossil-fuel combustion, are rapidly becoming globally distributed. Responses of terrestrial ecosystems to anthropogenic N inputs are likely to vary geographically. In the temperate zone, long-term N inputs can lead to increases in plant growth and also can result in over-enrichment with N, eventually leading to increased losses of N via solution leaching and trace-gas emissions, and in some cases, to changes in species composition and to ecosystem decline. However, not all ecosystems respond to N deposition similarly; their response depends on factors such as successional state, ecosystem type, N demand or retention capacity, land-use history, soils, topography, climate, and the rate, timing, and type of N deposition. We point to some of the conditions under which anthropogenic impacts can be significant, some of the factors that control variations in response, and some areas where uncertainty is large due to limited information.

Original languageEnglish (US)
Pages (from-to)113-119
Number of pages7
JournalAmbio
Volume31
Issue number2
DOIs
StatePublished - Jan 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Environmental Chemistry
  • Ecology

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