Effect of thinning intensity on soil nitrogen dynamics in Pinus densiflora stand

Taek Keun Oh, Min Gi Cho, Jae Min Chung, Hye Ran Jung, Kwon Seok Jeon, Hyun Shik Moon, Seung Joo Lee, Yoshiyuki Shinogi

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2 Citations (Scopus)


The effects of thinning intensity on soil N dynamics of Red pine (Pinus densiflora S. et Z.) stands were investigated in four short-term thinning experiments in southern Korea. The measurement was conducted 7 years after the thinning treatment and the thinning intensity ranged from heavy thinning to no thinning. All thinned sites had higher average extractable NH4 + and NO3-N ranges than that of the control, and the average of the lightly thinned site was significantly higher than that of the control for the other two thinning treatment. Average NH4+ concentrations were higher than the average NO3- concentrations in all study sites, and the of extractable NH4 + concentrations were higher in the growing season of Jun and July, and then declined in the late summer and fall seasons. Nitrification rates were comparatively low and net N mineralization differed significantly by thinning management, and showed seasonal variations. For net N mineralization and nitrification rate during the study period, the lightly thinned site had a significantly higher average than the other three sites.

Original languageEnglish
Pages (from-to)473-479
Number of pages7
JournalJournal of the Faculty of Agriculture, Kyushu University
Issue number2
Publication statusPublished - Sept 2012

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science


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