草地生态系统碳循环研究在揭示草地碳源/汇功能,提高草地碳管理水平上至关重要.阐述了碳科学的重要意义；对我国草地生态系统碳储量及碳排放量评估结果予以总结比较；探讨工程建设、草原开垦、放牧管理、施肥、草地恢复技术和气候变化及其他自然因素对草地生态系统碳循环的影响；概括并评价目前我国草地生态系统碳评估的研究方法及意义.指出目前我国草地生态系统碳循环研究中存在的主要问题,及未来中国草地生态系统碳循环的研究趋势.%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 e-valuated. 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.
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