Correction to: Comparison of automatic and manual chamber methods for measuring soil respiration in a temperate broad-leaved forest

Correction to: Journal of Ecology and Environment (2018) 42:32

https://doi.org/10.1186/s41610-018-0093-0

Following publication of the original article (Lee, 2018), it was reported that a mismatch occurred between the online HTML article and the PDF version. In the PDF version of the article, text was missing on page 3 between “Rs was calculated from the rate of increase in CO2 concentration measured per unit of time (Eq. (1)):” and the equation “Rs (mg CO₂ m^-2 h^-1) = a · ρ · V · S^-1” (2)

The text from the beginning of page 3 should read as follows:

… AOCC system. Also, AOCC can minimize the artificial disturbance caused by the measurement because there is little access of the measurer around the measuring point. A detailed description of this type of system can be found in Suh et al. (2006) and Eom et al. (2018). Rs was calculated from the rate of increase in CO₂ concentration measured per unit of time (Eq. (1)):

$$ \mathrm{Rs}\ \left(\mathrm{mg}\ {\mathrm{CO}}_2\ {\mathrm{m}}^{-2}\ {\mathrm{h}}^{-1}\right)=a\cdotp \rho \cdotp L\cdotp {A}^{-1} $$

(1)

where a is the increasing rate of the CO₂ (ppm min^− 1) in the closed chamber system, ρ is the density of CO₂, L is the total volume of the closed chamber system (m³) included in chamber, tube, IRGA, pump etc., and A is the surface area in the chamber.

In the MCM, the CO₂ concentration was measured using a closed chamber cap of approximately 15 cm high that was installed with a CO₂ sensor (GMP343, Vaisala, Finland) at the top inner section. When the chamber cap was installed on the collar top, the CO₂ concentration in the closed space between the ground and the chamber cap increased with time (Lee, 2018). In the MCM, the Rs was calculated using the following Eq. (2):

$$ \mathrm{Rs}\ \left(\mathrm{mg}\ {\mathrm{CO}}_2\ {\mathrm{m}}^{-2}\ {\mathrm{h}}^{-1}\right)=a\cdotp \rho \cdotp V\cdotp {S}^{-1} $$

(2)

The original article (Lee, 2018) has been updated.