Greenhouse gas emissions from grassland ecosystems have severely impacted on the global climate changes and have become one of the key issues of science. Grassland ecosystems are important terrestrial ecosystems and are intensively affected by human activities. In this study, the Loess Plateau was choosing as the study site and five agrosystems were selected as objects of study. We determined the soil respiration dynamics, soil organic carbon, soil total nitrogen, soil total phosphorus and soil water conten...