Progress of Carbon Cycle Research in China Grassland Ecosystem

The carbon cycle research in grassland ecosystem was of crucial importance in revealing the function of carbon source or sink and improving carbon management in grassland ecosystem.The significance of the carbon research was expounded;the evaluation results of carbon storage and emissions in China grassland were compared;the impacts of engineering construction,grassland reclamation,grazing,fertilization,climate change and grassland recovery technology on the grassland carbon cycle were discussed;the research methods and its significance of grassland ecosystem carbon evaluation were summarized and evaluated.At last,it pointed out the main problems of the carbon cycle research in grassland ecosystem of China,and the future research trends in carbon cycle research in China grassland ecosystem.