This paper analyzes the current situation and accounting method of carbon reserves of the forest and grass ecosystem in China, and uses carbon fixation rate method to calculate the carbon sequestration capacity and gray prediction model of the forest and grass ecosystem. The results show that the annual carbon sequestration and total area of forest and grass ecosystem in China are increasing year by year, and the reasonable increase of forest and grassland area is conducive to increasing the carbon sequestration of forest and grass resources. It is expected that the carbon sequestration of China's forest and grass ecosystem will increase to 854.9 million tons by 2030 and the total area will increase to 646.7 million hectares. Then combined with China carbon sink market development status and the bottleneck, recommendations are presented in terms of reasonable planning forest area, carbon sink support system, construction of carbon sink market, and carbon sink law construction, in order to provide reference for China carbon sink accounting and carbon sink trading market development.

carbon sequestration and carbon sinks increase  /  carbon sequestration potential of forest and grassland  /  gray prediction model  /  trading mechanism