TY - JOUR
T1 - DBH growth model for Pinus densiflora and Quercus variabilis mixed forests in central Korea
AU - Lee, Woo Kyun
AU - Von Gadow, Klaus
AU - Chung, Dong Jun
AU - Lee, Jong Lak
AU - Shin, Man Yong
N1 - Funding Information:
This study is a part of research supported by Technology Development Program for Agriculture and Forestry, Minister of Agriculture and Forestry, Republic of Korea.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/8/15
Y1 - 2004/8/15
N2 - This study presents an individual tree diameter at breast height (dbh) growth model for mixed Pinus densiflora (Red pine) and Quercus variabilis (Oak) uneven-aged stands in central region of Korean peninsula. The different model components, including the effects of tree age, tree size, competition and growing site are evaluated for both Red pine and Oak. The aim is to understand and model the individual growth patterns of the two species. Based on sensitivity analysis of radial growth using a variety of combinations of independent variables, the conclusion could be reached that the size and aspect components have a positive effect on radial growth, while the other variables such as age, competition index, elevation, and slope have a negative influence. All model component effects, except the effect of elevation, are greater in pine than in Oak, indicating that Red pine is relatively less suppressed than Oak in the study area. Among the topographic variables, slope appears to be an important critical factor for Red pine. For Oak, elevation is the primary critical factor and other variables have no great effect. These interrelationships between radial growth and the age, size, competition, and site variables correspond quite well with ecological expectations and silvicultural experience of the two species in Korea.
AB - This study presents an individual tree diameter at breast height (dbh) growth model for mixed Pinus densiflora (Red pine) and Quercus variabilis (Oak) uneven-aged stands in central region of Korean peninsula. The different model components, including the effects of tree age, tree size, competition and growing site are evaluated for both Red pine and Oak. The aim is to understand and model the individual growth patterns of the two species. Based on sensitivity analysis of radial growth using a variety of combinations of independent variables, the conclusion could be reached that the size and aspect components have a positive effect on radial growth, while the other variables such as age, competition index, elevation, and slope have a negative influence. All model component effects, except the effect of elevation, are greater in pine than in Oak, indicating that Red pine is relatively less suppressed than Oak in the study area. Among the topographic variables, slope appears to be an important critical factor for Red pine. For Oak, elevation is the primary critical factor and other variables have no great effect. These interrelationships between radial growth and the age, size, competition, and site variables correspond quite well with ecological expectations and silvicultural experience of the two species in Korea.
KW - Individual tree
KW - Mixed stand
KW - Pinus densiflora
KW - Quercus variabilis
KW - Uneven-aged stand
KW - dbh growth model
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U2 - 10.1016/j.ecolmodel.2003.11.012
DO - 10.1016/j.ecolmodel.2003.11.012
M3 - Article
AN - SCOPUS:2642575285
SN - 0304-3800
VL - 176
SP - 187
EP - 200
JO - Ecological Modelling
JF - Ecological Modelling
IS - 1-2
ER -