Abstract
The characteristics of soil terpenoid emissions are poorly understood; thus, the spatial variation needs to be evaluated. We measured the spatial variations in soil α-pinene emissions using the soil chamber method on the floor of a red pine (Pinus densiflora Sieb. & Zucc.) forest. The distance from the trunk and the dry weight (DW) of leaf litter were not associated with α-pinene soil emissions. A positive relationship was detected between the DW of leaf litter and α-pinene emission rate from the A layer after removing the A0 layer. A clear linear relationship was observed between the DW of well-mixed leaf litter and α-pinene emission rate from the litter. These results suggest that terpenes on the soil surface affected the high α-pinene emission rate from the soil, particularly during spring.
