Abstract
ABSTRACTThis study was conducted to estimate C storage and CO2 absorption by developing allometric equations for Quercus acuta in South Korea. Carbon content and CO2 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 CO2 absorption were the lowest as 64.0455 t C ha−1 and 234.6840 t CO2 ha−1, respectively; whereas these were 69.6865 t C ha−1 and 255.5165 t CO2 ha−1 for the factor in this study. The highest values of C content and CO2 absorption were shown as 74.9280 t C ha−1 and 274.7365 t CO2 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 R2 adjusted of 0.9815.
Highlights
The industrial revolution of the last 150 years fostered excessive use of fossil fuels
Aboveground Biomass expansion factor (BEF) for Q. acuta was slightly higher than the national factor (1.22) at 1.3275, with a range from 1.062 to 1.712 (Table 3)
We found that BEF gradually increased with diameter at breast height (DBH), and formulated an equation with a calculated as 0.7535 and b as 0.22: Y 1⁄4 0:7535 Â X0:22 (6)
Summary
The industrial revolution of the last 150 years fostered excessive use of fossil fuels. Levels of CO2 in the Earth’s atmosphere increased almost 50% between 1845 and 2010. Increasing CO2 levels has become a major concern for climate change, and has caused problems such as global warming, rising sea level, desertification, and changes in weather. The effects of climate change produce unexpected and uncertain results in most societies and species throughout the world. Drought, flood, and negative effects on the drinking water supply and agriculture are caused by climate change. Many species in animal and plant communities have been confronted with the crisis of extinction, and it is difficult to maintain a safe water supply because of rising sea levels and the threat of salt immersion
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