Non-symbiotic nitrogen fixation in forest ecosystems

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Since the first attempts to increase forest growth using nitrogen (N) fixation, biological N fixation has been intensively studied. Numerous studies that focused on symbiotic N fixation and rates were well quantified. However, the rates and importance of non-symbiotic N fixation in forest ecosystems remains incomplete. In this review, reports of non-symbiotic N fixation from various studies throughout the world were examined and the ecological significance of non-symbiotic N fixation in temperate forest ecosystems was investigated. The reported rates of non-symbiotic N fixation varied greatly, and ranged from < 0.01-5 kg N ha-1 year-1. However, an average input of 2-3 kg N ha-1 year-1 could be expected when all ecosystem components were included. In several studies, non-symbiotic N fixation seemed to decrease with stand age. Some methodological considerations such as incubation time and conversion factor in the acetylene reduction method were presented. Also, it should be noted that more detailed studies on non-symbiotic N fixation in boreal and tropical forests are needed to understand the importance of N fixation in these forest ecosystems.

Original languageEnglish
Pages (from-to)183-196
Number of pages14
JournalEcological Research
Volume16
Issue number2
DOIs
Publication statusPublished - 2001 Jun 1

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nitrogen fixation
forest ecosystems
forest ecosystem
fixation
acetylene reduction
forest growth
temperate forests
boreal forests
tropical forests
ecosystems
nitrogen
acetylene
temperate forest
boreal forest
tropical forest
methodology
incubation
ecosystem

Keywords

  • Acetylene reduction method
  • Forest ecosystem
  • Non-symbiotic nitrogen fixation

ASJC Scopus subject areas

  • Ecology

Cite this

Non-symbiotic nitrogen fixation in forest ecosystems. / Son, Yo Whan.

In: Ecological Research, Vol. 16, No. 2, 01.06.2001, p. 183-196.

Research output: Contribution to journalArticle

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