depths of 5 cm and 20 cm in dry dipterocarp forest at DFR site and mixed deciduous forest at MKL site. We found that soil CO2 concentration at the depth 20 cm was higher than at the depth of 5 cm at both sites. 20000 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 at 20cm (MKL) at 5cm (MKL) 30 25 20 15 10 5 CO2 effluxes (MKL) at 5cm (MKL) 60 50 40 30 20 10 40 35 30 25 20 15 10 5 60 50 40 30 20 10 Air temp. (DFR) Soil temp_5cm (DFR) Air temp. (MKL) Soil temp_5cm (MKL) Fig.1 Seasonal variations with 15 minute-intervals at DFR site for 181 days and DFR site for 365 days; a) Soil CO2 Concentration; b) Soil CO2 Efflux; c) Soil Volumetric Moisture; d) Rainfall; and e) Soil Temperature 154 Proceedings of the International Conference on Climate Change, Biodiversity and Ecosystem Services for the Sustainable Development Goals (SDGs): Policy and Practice 27-29 June 2016, Cha-am, Phetchaburi, Thailand Soil CO2 Concentration (μmol mol-1) Months at 20cm (DFR) at 5cm (DFR) Months 0 Soil CO2 Efflux (μmol m-2 s-1) Months CO2 effluxes (DFR) Months Months 0 Soil Volumetric Moisture (%) Months at 5cm (DFR) Months Rainfall (MKL) 0 Rainfall (mm) Months Rainfall (DFR) 0 Temperature ( C) Months Months a) b) c) d) e) Comparing between both sites, we found that the averages of soil CO2 concentration and their variations at the two depths in mixed deciduous forest at MKL site were higher than in dry dipterocarp forest at DFR site (as shown
Proceedings of International Conference on Climate Change, Biodiversity and Ecosystem Services for the Sustainable Development Goals : Policy and Practice 27-29 June 2016 at the Sirindhorn International Environmental Park, Cha-am, Phetchaburi, Thailand
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