The influence on soil breathing by induce reformation of low-quality forest in Lesser Khingan Range

After respectively raising to Korean pine, Picea koraiensis and Manchurian ash in the low-quality forest of Lesser Khingan Range area, we measured soil CO2 flux by LI-8150 More-channel Soil Carbon Flux Automatic Measurement System, and analyzed the different influence of soil breathing made by different induce reformation of soil physical and chemical properties, temperature, water content and litter. The results show that average soil respiration rate of all the induce forest increases in a different degree, contrasting to the check plots, with the data of Picea koraiensis 88.24% > Korean pine 43.96% > Manchurian ash 31.58%. Soil respiration rate of no interferences check plots have a significantly positive correlation with the soil chemical properties (p<0.05), while soil respiration rate has a significantly positive correlation with half decomposition falling objects layer (p<0.05). The highest Q10 value of these induce forests is Korean pine and the value is 4.48 higher than other stand by 29.2% ∼ 54.24%.