Productivity dynamic of Festuca sinensis pasture built on‘bare soil land' degraded meadow during 5years on Tibetan plateau

In order to provide more technology support for restoring the degraded‘bare soil land'meadow on Qinghai-Tibetan plateau,the present study analyzed the aboveground biomass,underground biomass, height of community of monoculture Festuca sinensis pasture and mixture pasture of F.sinensis+Poa crymophila+Elymus nutans which built on‘bare soil land'degraded meadow.The results showed that both of these two kinds of pasture presented good productivity under appropriate management.However,the mixture pasture presented higher productivity and better community characteristics than monoculture F.sinensis pasture.The mixture pasture could accumulate more root biomass to support aboveground vegetation.These results revealed that F.sinensis was the best forage for restoring the degraded ‘bare soil land'if mixcultured with other grasses.At the same time,the recognition of local herders to establish pasture should be improved because it was critical to develop pasture establishing technology on QinghaiTibetan plateau,especially for restoring the‘bare soil land'degraded meadow.