TY - JOUR
T1 - The effects of logging on soil greenhouse gas (CO2, CH4, N2O) flux in a tropical rain forest, Peninsular Malaysia
AU - Yashiro, Yuichiro
AU - Kadir, Wan Rashidah
AU - Okuda, Toshinori
AU - Koizumi, Hiroshi
PY - 2008/5/15
Y1 - 2008/5/15
N2 - To evaluate the effects of logging on soil greenhouse gas flux in a tropical rain forest, we measured CO2, CH4, and N2O fluxes at logged and unlogged sites in Peninsular Malaysia (N = 7-27 at each site). Although soil temperature at the logged sites was higher than at unlogged sites, soil CO2 flux did not differ between sites. The CH4 consumption at the logged sites tended to be less than that at unlogged sites, and some soils at the logged sites emitted CH4. These results suggest that logging can decrease CH4 consumption or even convert CH4 sinks into sources. The increase in soil bulk density after logging might lowered the effective diffusivity of CH4 and O2 availability in soils, which might limit the CH4 consumption at the logged sites. N2O fluxes were increased significantly for at least 1 year after logging because of an increase in soil nitrogen availability. Logging decreased the CH4 absorption rate and increased the N2O emission rate of the soil. Based on these findings, we conclude that logging in tropical rain forests increases the emission of CH4 and N2O for at least 1 year after logging, thus potentially contributing to global warming.
AB - To evaluate the effects of logging on soil greenhouse gas flux in a tropical rain forest, we measured CO2, CH4, and N2O fluxes at logged and unlogged sites in Peninsular Malaysia (N = 7-27 at each site). Although soil temperature at the logged sites was higher than at unlogged sites, soil CO2 flux did not differ between sites. The CH4 consumption at the logged sites tended to be less than that at unlogged sites, and some soils at the logged sites emitted CH4. These results suggest that logging can decrease CH4 consumption or even convert CH4 sinks into sources. The increase in soil bulk density after logging might lowered the effective diffusivity of CH4 and O2 availability in soils, which might limit the CH4 consumption at the logged sites. N2O fluxes were increased significantly for at least 1 year after logging because of an increase in soil nitrogen availability. Logging decreased the CH4 absorption rate and increased the N2O emission rate of the soil. Based on these findings, we conclude that logging in tropical rain forests increases the emission of CH4 and N2O for at least 1 year after logging, thus potentially contributing to global warming.
KW - Carbon dioxide
KW - Greenhouse gases
KW - Logging
KW - Methane
KW - Nitrous oxide
KW - Tropical rain forest
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U2 - 10.1016/j.agrformet.2008.01.010
DO - 10.1016/j.agrformet.2008.01.010
M3 - Article
AN - SCOPUS:43549107262
VL - 148
SP - 799
EP - 806
JO - Agricultural and Forest Meteorology
JF - Agricultural and Forest Meteorology
SN - 0168-1923
IS - 5
ER -