Environmental Regulation of CO2 Exchange Pattern in Facultative CAM Plants Effects of Artemisia gmelinii Shrub Patch to CO2 Exchange in the Grassland of Loess Plateau Carbon Exchange Characteristics of Fenced and Natural Grazed Grassland in Loess Plateau Multi-channel automated chamber system for continuously monitoring CO2 exchange between agro-ecosystem or soil and the atmosphere Recent development in the research of carbon cycle in coral reef ecosystem Carbon Dioxide Exchange Between the Atmosphere and an Alpine Shrubland Meadow During the Growing Season on the Qinghai-Tibetan Plateau Net ecosystem CO2 exchange and its controlling factors during the growing season in an inter-tidal salt marsh in the Yellow River Estuary, China