Study on vegetation restoration of mountain shrubtussock in Yunnan province

The paper studied vegetation restoration of mountain shrubtussock in Yunnan province, and concluded that all of the three treatments including fencing, shallow plough and scarification reseeding could promote vegetation restoration, increase grassland yield and quality, improve soil and enhance effects of water and soil conservation on degenerated mountain shrubtussock. The effect of scarification reseeding was better than fencing and shallow plough. In the scarification reseeding treatment, three years average of stand height was 54.0 cm, the vegetation coverage was 95.4%, plant density was 2 250.1 branches/m2 and fresh yields was 7 701.1 kg/hm2, increased 210.34%, 147.12%, 123.60% and 93.25% than control, respectively. The soil total N (2.05 g/kg) and organic matter (62.61 g/kg) increased by 79.82%, 109.82%, and volume weight (0.83 g/kg) reduced by 25.89%. The surface runoff (5.73 m3/hm2) and soil erosion (6.32 kg/hm2) dropped by 93.59% and 78.85%.