Soil nitrogen transformations and availability in upland pine and bottomland alder forests

Tae Kyung Yoon, Nam Jin Noh, Haegeun Chung, A. Ram Yang, Yo Whan Son

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Soil nitrogen (N) processes and inorganic N availability are closely coupled with ecosystem productivity and various ecological processes. Spatio-temporal variations and environmental effects on net N transformation rates and inorganic N concentrations in bulk soil and ion exchange resin were examined in an upland pine forest (UPF) and a bottomland alder forest (BAF), which were expected to have distinguishing N properties. The annual net N mineralization rate and nitrification rate (kg N·ha-1·year-1) were within the ranges of 66.05-84.01 and 56.26-77.61 in the UPF and -17.22-72.24 and 23.98-98.74 in the BAF, respectively. In the BAF, which were assumed as N-rich conditions, the net N mineralization rate was suppressed under NH4+ accumulated soils and was independent from soil temperature. On the other hand, in the UPF, which represent moderately fertile N conditions, net N transformation rates and N availability were dependent to the generally known regulation by soil temperature and soil water content. Stand density might indirectly affect the N transformations, N availability, and ecosystem productivity through different soil moisture conditions. The differing patterns of different inorganic N indices provide useful insight into the N availability in each forest and potential applicability of ion exchange resin assay.

Original languageEnglish
Pages (from-to)2941-2958
Number of pages18
JournalForests
Volume6
Issue number9
DOIs
Publication statusPublished - 2015

Fingerprint

Alnus
soil nitrogen
lowlands
highlands
Pinus
coniferous forests
ion exchange resins
nitrogen
soil temperature
soil
mineralization
ecosystems
stand density
resin
nitrification
ion exchange
temporal variation
soil water content
soil water
productivity

Keywords

  • Alnus japonica
  • Ion exchange resin
  • Nitrogen mineralization
  • Pinus densiflora
  • Soil moisture

ASJC Scopus subject areas

  • Forestry

Cite this

Soil nitrogen transformations and availability in upland pine and bottomland alder forests. / Yoon, Tae Kyung; Noh, Nam Jin; Chung, Haegeun; Yang, A. Ram; Son, Yo Whan.

In: Forests, Vol. 6, No. 9, 2015, p. 2941-2958.

Research output: Contribution to journalArticle

Yoon, Tae Kyung ; Noh, Nam Jin ; Chung, Haegeun ; Yang, A. Ram ; Son, Yo Whan. / Soil nitrogen transformations and availability in upland pine and bottomland alder forests. In: Forests. 2015 ; Vol. 6, No. 9. pp. 2941-2958.
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