Characteristics of CO2 flux in an old growth mixed forest in Tianmu Mountain, Zhejiang, China. Periodic characteristics of soil CO2 flux in mangrove wetland of Quanzhou Bay, China. Effects of conversion of natural broad-leaved forest to Chinese fir plantation on soil respiration in subtropical China. Variation characteristics of CO2 flux in Phyllostachys edulis forest ecosystem in subtropical region of China Effects of biological soil crust at different succession stages in hilly region of Loess Plateau on soil CO2 flux.