Publications‎ > ‎Domestic‎ > ‎

Carbon Storage of Natural Pine and Oak Pure and Mixed Forests in Hoengseong, Kangwon

Carbon Storage of Natural Pine and Oak Pure and Mixed Forests in Hoengseong, Kangwon
 
Sue Kyoung Lee1, Yowhan Son1*, Nam Jin Noh1, Su Jin Heo1, Tae Kyung Yoon1,
 Ah Reum Lee2, Sarah Abdul Razak1 and Woo Kyun Lee1

1Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136-713, Korea
2Department of Climate Environment, Graduate School of Life and Environmental Sciences, Korea University, Seoul 136-713, Korea
 
Abstract: This study was conducted to estimate the carbon (C) contents in pure and mixed stands of pine (Pinus
densiflora) and oak (Quercus spp.) trees for establishing the C inventory of forest ecosystems. A total of fifteen
20m×20m pure and mixed stands of pine and oak trees were chosen in natural forests in Hoengseong, Kangwon
based on the basal area of all trees ≥ 5 cm DBH: three of 95% of pine and 5% oak trees [pine stand], three of 100% of oak trees [oak stand], and nine of 20 to 70% of pine and 80 to 30% of oak trees [mixed stand].
To estimate C contents in the study stands, biomass in vegetation, forest floor and coarse woody debris (CWD)
were calculated and C concentrations in vegetation, forest floor, CWD and soil (0-30 cm) were analyzed. There was no significant difference in vegetation C contents among the stands; 147.6 Mg C/ha for the oak stand, 141.4 Mg C/ha for the pine stand and 115.8 Mg C/ha for the mixed stand. Forest floor C contents were significantly different among the stands (p<0.05); 12.7 Mg/ha for the pine stand, 9.9 Mg/ha for the oak stand, and 8.4 Mg/ha for the mixed stand. However, CWD C contents were not significantly different among the stands (p>0.05); 2.2 Mg/ha for the mixed stand, 1.7 Mg/ha for the oak stand, and 1.1 Mg/ha for the pine stand. Soil C contents up to 30 cm depth were not significantly different among the study stands; 44.4 Mg C/ha for the pine stand, 41.6 Mg C/ha for the mixed stand, and 33.3 Mg C/ha for the oak stand. Total ecosystem C contents were lower in the mixed stand than those in the pure stands, because vegetation C contents which occupied almost total ecosystem C contents were lower in the mixed stand than those in the pure stands; 199.6 Mg C/ha for the pine stand, 192.5 Mg C/ha for the oak stand and 169.1 Mg C/ha for the mixed stand. Lower vegetation C contents in the mixed stand might be influenced by interspecific competition between pine and oak trees and intraspecific competition among the oak trees resulted from high stand density. We suggest that forest management such as thinning to enhance C storage is indispensible for minimizing the competition in forest ecosystems.
Key words : biomass, carbon storage, coarse woody debris, forest floor, Pinus densiflora, Quercus species, soil, vegetation
Comments