Grazing intensity is key to global grassland carbon sequestration potential

Grasslands are coming under ever-increasing pressure worldwide. Many grasslands are degraded due to overgrazing and inappropriate land management. This is impacting belowground biology and soil biological processes. One aspect that deserves far greater attention is the intensity of grazing and how this impacts grassland soil ecosystems. Grazing intensity impacts soil organisms including their diversity and activity, and the soil carbon cycle. However, environmental characteristics determine in part the effects of grazing intensity on soil processes. In addition, many questions remain to be answered in relation to the type of livestock and grazing regime. Only with a fuller understanding of the impacts of grazing on the soil ecosystem will it be possible to advise farmers and land managers on optimal grazing choices for a sustainable future.