The Qinghai-Tibetan Plateau is a key genetic resource region for plant flora and river resources in China, and has the largest and most species-rich alpine grassland ecosystem. Grassland plays a very important role in animal production, biodiversity and water conservation. Changes to grassland communities resulting from degradation of frozen soil and highway construction affect the processes of ecology. To gain insight into the contribution of biodiversity to the stability of this grassland ecosystem, there...