Soil and vegetation characteristics during the formation of typical degraded grassland.

To understand the formation process of typical poisonous plant degraded grassland, we studied the cha-racteristics of vegetation and soil during the gradual expansion of into the native grassland of Qinghai-Tibet Plateau. The results showed that population density, plant height, coverage, and biomass of increased during the formation of degraded grassland. In comparison with native grassland, the degraded grassland had higher total aboveground biomass (113.