Comparison of CO2 Net Exchange between Different Plant Communities in Typical Steppe of Inner Mongolia Plateau

作者：Jing Hou, Yong Li Wang, Li Xin Wang, Hua Min Liu, Cheng Jia · 发表于：Advanced materials research · 年份：2012 · DOI：10.4028/www.scientific.net/amr.518-523.1492 · 研究领域：Peatlands and Wetlands Ecology、Climate change and permafrost、Soil Carbon and Nitrogen Dynamics

To measure the carbon exchange of two different plant communities in typical steppe, we used dynamic chamber method improved from static chamber method, and compared it with the regional eddy-covariance method. Results showed that: 1) Biomass of plant community with enclosed restoration was higher than that with free grazing; 2) After 6 years enclosed restoration, the plant community had become a CO2 sink though the region was still a CO2 source while the free grazing plant community had turned into a CO2 source in contrast with its regional CO2 sink, and 3) Net ecosystem exchange (NEE) of enclosed restoration plant community was significantly higher than that of typical steppe.