Dynamics of Grassland Vegetation Composition across different Land-use Types on the Qinghai Tibet Plateau: Implications to Combat Grassland Degradation

The constant biotic and abiotic interventions on the Qinghai Tibet Plateau (QTP) are seriously degrading grasslands and, at same time, restricting active ecosystem function grassland vegetation distribution plateau. This research analyses dynamics of composition across three land uses counties. degree degradation was divided into four land-use types based, i.e., healthy (HG), restored (RG), moderately degraded (MD) grassland, severely (SD) grassland. About 32 plant species were recorded in Tiebujia county, 28 Maqin 18 Maduo county. Results showed Poa crymophila, Polygonum sibiricum, Leontopodium nanum Oxytropis falcatabunge as most abundant all land-uses richness ranged from 8 to 12 per land-use, suggesting low diversity A positive non-significantly mean change (p<0.05) detected for evenness indices while a negative Simpson Shannon alpine meadow steppe both results imply that affects vegetation, health, QTP. Plant total cover covered far more areas than other land-uses. Urgent mitigation measures halt decline plateau should be adopted.