我国北方温带草原碳循环研究进展

The research progress of carbon cycle in temperate grassland of north China

首先分析了我国北方温带草原在我国草地生态系统碳循环研究中的地位和重要性,进而从碳的固定、碳的贮存和碳的释放3个方面阐述了我国北方温带草原碳循环的特征和研究现状,探讨了影响碳循环3个环节的主要因素,重点对北方温带草原初级生产力、土壤有机碳、土壤呼吸及其对环境因子和人类活动的响应进行综述,为我国北方温带草原碳循环的研究提供参考。

The importance of temperate grassland in northern China in carbon cycle researches of grassland ecosystem was discussed. The characteristics and research status of carbon cycle of temperate grassland in northern China was expatiated at three aspects such as carbon fixation, carbon storage and carbon emission, as well as the main factors affecting these 3 aspects. It emphasized the primary productivity of grassland, soil organic carbon, soil respiration and their responses to the environmental factors and the human activities, and provided reference for the study of carbon cycle of temperate grassland in northern China.