Estimating carbon storage and CO2 absorption by developing allometric equations for Quercus acuta in South Korea
2017
Kim, Hyun-Jun | Lee, Paul S. (Paul Sang Hyun)
This study was conducted to estimate C storage and CO ₂ absorption by developing allometric equations for Quercus acuta in South Korea. Carbon content and CO ₂ absorption were estimated according to climate change using data such as volume, stem density, and biomass expansion factor (BEF). Three kinds of BEFs were applied for this calculation: the national factor (NF, 1.22); the factor in this study (1.3275); and the biomass expansion regression equation (BRE) in this study. BRE among BEFs was developed to calculate BEF related to diameter at breast height (DBH) because BEF had a significantly positive relationship with DBH; the bigger DBH grew, the higher BEF increased. When applying the NF, C content and CO ₂ absorption were the lowest as 64.0455 t C ha ⁻¹ and 234.6840 t CO ₂ ha ⁻¹, respectively; whereas these were 69.6865 t C ha ⁻¹ and 255.5165 t CO ₂ ha ⁻¹ for the factor in this study. The highest values of C content and CO ₂ absorption were shown as 74.9280 t C ha ⁻¹ and 274.7365 t CO ₂ ha ⁻¹ when using the BRE. Carbon content prediction equations were also developed using these BEFs. Thus, BRE is suitable for developing an allometric equation for C content prediction with the greatest R ² adjusted of 0.9815.
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