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Changes in Soil Temperature, Moisture Content, Light Availability and Diameter Growth After Thinning in Korean Pine (Pinus koraiensis) Plantation  

Bae, Sang-Won (Forest Practice Research Center, Korea Forest Research Institute)
Hwang, Jae-Hong (Division of Forest Tree Improvement, Korea Forest Research Institute)
Lee, Sang-Tae (Forest Practice Research Center, Korea Forest Research Institute)
Kim, Hyun-Seop (Forest Practice Research Center, Korea Forest Research Institute)
Jeong, Jun-Mo (Forest Practice Research Center, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.99, no.3, 2010 , pp. 397-403 More about this Journal
Abstract
This study was conducted to investigate the changes in soil temperature, soil moisture content, light availability (photosynthetically active radiation, PAR) and diameter growth in 46-year-old Korean pine (Pinus koraiensis Siebold et Zuccarini) plantation located in Gwangneung experimental forest after 4 years from thinning. Three different thinning intensities [control, 45%(T45), and 60%(T60) basal area reduction] were applied in 2004. Mean soil temperature and soil water content were $8.9^{\circ}C$ and 14.3% for control, $10^{\circ}C$ and 16.1% for T45 and $10.2^{\circ}C$ and 16.1% for T60, respectively. Mean soil temperature and moisture content were significantly different among the treatment plots (p<0.05). Mean PAR in control, T45 and T60 was 44, 143 and178 ${\mu}mol/m^2$/sec, respectively and the differences were also statistically significant among the treatment plots (p<0.05). Mean annual diameter growth in control, T45 and T60 was 0.4, 1.5 and 1.2 mm, respectively. Diameter growth of Pinus koraiensis was steadily increased after thinning in comparison to control. Consequently, the results suggested that soil temperature, soil moisture content and light availability were likely to last beyond the 4 years after thinning in this Korean pine plantation.
Keywords
diameter growth; photosynthetically active radiation; Pinus koraiensis; soil temperature; soil water content; thinning;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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