Grassland, which occupied 40% of the terrestrial surface, is one of the most important terrestrial ecosystems on earth. Contributions of soil respiration in grassland ecosystems to global carbon cycle could not be neglected. Carbon storage in grassland ecosystems is huge, and its soil respiration is an important part of carbon cycle. Researches on responses of soil respiration to environmental change and human disturbance in grassland ecosystems play an essential role in estimation of global carbon budget a...