Abstract:In order to scientifically evaluate the carbon sequestration capacity of the Grain for Green Project in China, the detailed afforestation data of the first phase of Grain for Green Project were collected. Combined with the growth curve of plantation volume (biomass) of Chinese tree species, the characteristics of soil organic carbon change before and after Grain for Green Project and the relevant parameters of carbon storage calculation of the main tree species, the carbon sequestration capacity and its changes of the Grain for Green Project from 1999 to 2050 were estimated. The results showed that the project's total carbon storage was 355.87 Tg when the project completed in 2010. When the project was implementing, the total carbon sequestration (trees and soil) of the former period was larger than that of the latter period, and the mean annual carbon sequestration was 29.66 Tg. The potential increment of carbon sink for the project increased. It is expected the potential increment of carbon sink of China's project are 1 234.04 Tg in 2050. Therefore, China's Grain for Green Project has produced huge carbon sink benefits.