Study on vegetation rebuilding of "black soil type" degraded grassland with Poa pratensis in the riparian areas of rivers
The six-year "black soil type" degraded grassland revegetated with wild Poa pratensis was used to carry out the vegetation rebuilding experiment. The results showed that the seeds of Poa pratensis were curing under natural and cultivating conditions in the region where the altitude was around 4 000 m;the potency of sexual propagation and asexual propagation were excellent and it could form a fine sod and vegetable cover; the total capacity of soil and water conservation of Poa pratensis artificial grassland was increased and the soil physical characteristic was improved as well; the aboveground phytomass was higher than native vegetation and could reach the level of Elymus nutans artificial grassland; the cold resistance of Poa pratensis was strong. It could be concluded that it was a superior species for vegetation rebuilding of the "black soil type" degraded grassland in the riparian areas of the Changjiang River,Lantsang River and Yellow River.
Poa pratensisthe"black soil type" degraded grasslandvegetation rebuildingChangjiang RiverLantsang RiverYellow River
NETL
NSTL
万方数据
