Grasslands including wetlands are one of the most important ecosystem types over the globe, which provide important ecosystem services e.g. animal by-productions as well as water and soil conservation. However, grassland degradation has dramatically increased due to climate change and enhanced human activity in the past decades. It has been a big challenge how to maintain sustainable development of grasslands. A full understanding of grassland degradation caused by land use and climate change is beneficial to sustainable grassland development. Grassland degradation is more complicated process, which involves strong interactions between grazers (including livestock and wild animals), plants and soils over different spatiotemporal scales. This session will address grassland degradation within the context of pedological, hydrological, biological and geomorphological processes in different climates over the world.