The global carbon cycle has drawn special attention by policy makers and scientists. In December 1997, the Kyoto Protocol has been proposed by Parties to Climate Change Frame of United Nations, in which 39 industrialized countries are asked to impletement the duties of reduction of CO 2 emission. Based on recent estimation of global carbon change in the atmosphere, and ocean, anthropogenic carbon emission to the atmosphere (7.1 Pg/a) is more than the sum of carbon accumulated in the atmosphere (3.3±0.2 Pg ...