Nitrogen fixation, soil nitrogen availability, and biomass in pure and mixed plantations of alder and pine in central Korea

Yo Whan Son, Yoon Young Lee, Chon Young Lee, Myong Jong Yi

Research output: Contribution to journalArticle

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Abstract

Rates of nitrogen (N) fixation, soil N availability, and aboveground biomass were measured in 27-year-old pure and mixed Alnus hirsuta and Pinus koraiensis plantations in central Korea. Nodule biomass and N fixation were 179.3 kg ha- 1 and 46.6 kg ha- 1yr- 1 for the pure A. hirsuta plantation (PA) and 95.2 kg ha- 1 and 41.1 kg ha- 1yr- 1 for the mixed A. hirsuta + P. koraiensis plantation (MAP), respectively. A. hirsuta seemed to provide more than two thirds of annual N requirement for P. koraiensis.Rates of acetylene reduction were significantly related to soil temperature (R2 = 0.51, P < 0.001), but not to soil moisture content. Total inorganic N [ammonium (NH4+)plus nitrate (NO3-)] availability measured using ion exchange bags were significantly higher under PA (27.91 μ g-N bag- 1) and MAP (31.34 μ g-N bag- 1) than under the pure P. koraiensis plantation (PP) (14.31 μ g-N bag- 1). Especially soils under the influence of A. hirsuta showed at least 2 fold increase in resin total inorganic N concentrations. Total aboveground biomass (Mg ha- 1) was 147.3 for PA, 145.8 for MAP, and 174.8 for PP, respectively, and was not significantly different among plantations. A. hirsuta significantly increased soil N availability; however, the influence of N fixation on aboveground biomass was not significant for the study plantations.

Original languageEnglish
Pages (from-to)1841-1853
Number of pages13
JournalJournal of Plant Nutrition
Volume30
Issue number11
DOIs
Publication statusPublished - 2007 Nov 1

Fingerprint

Alnus
Nitrogen Fixation
Alnus hirsuta
Korea
nitrogen fixation
Biomass
Korean Peninsula
Nitrogen
Soil
Pinus
plantations
Pinus koraiensis
biomass
nitrogen
soil
bags
aboveground biomass
Acetylene
Ion Exchange
Ammonium Compounds

Keywords

  • A. hirsuta
  • Aboveground biomass
  • Nitrogen availability
  • Nitrogen fixation
  • P. koraiensis

ASJC Scopus subject areas

  • Plant Science

Cite this

Nitrogen fixation, soil nitrogen availability, and biomass in pure and mixed plantations of alder and pine in central Korea. / Son, Yo Whan; Lee, Yoon Young; Lee, Chon Young; Yi, Myong Jong.

In: Journal of Plant Nutrition, Vol. 30, No. 11, 01.11.2007, p. 1841-1853.

Research output: Contribution to journalArticle

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N2 - Rates of nitrogen (N) fixation, soil N availability, and aboveground biomass were measured in 27-year-old pure and mixed Alnus hirsuta and Pinus koraiensis plantations in central Korea. Nodule biomass and N fixation were 179.3 kg ha- 1 and 46.6 kg ha- 1yr- 1 for the pure A. hirsuta plantation (PA) and 95.2 kg ha- 1 and 41.1 kg ha- 1yr- 1 for the mixed A. hirsuta + P. koraiensis plantation (MAP), respectively. A. hirsuta seemed to provide more than two thirds of annual N requirement for P. koraiensis.Rates of acetylene reduction were significantly related to soil temperature (R2 = 0.51, P < 0.001), but not to soil moisture content. Total inorganic N [ammonium (NH4+)plus nitrate (NO3-)] availability measured using ion exchange bags were significantly higher under PA (27.91 μ g-N bag- 1) and MAP (31.34 μ g-N bag- 1) than under the pure P. koraiensis plantation (PP) (14.31 μ g-N bag- 1). Especially soils under the influence of A. hirsuta showed at least 2 fold increase in resin total inorganic N concentrations. Total aboveground biomass (Mg ha- 1) was 147.3 for PA, 145.8 for MAP, and 174.8 for PP, respectively, and was not significantly different among plantations. A. hirsuta significantly increased soil N availability; however, the influence of N fixation on aboveground biomass was not significant for the study plantations.

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