Degradation mechanism and applicability of several rehabilitation techniques on Xilamuren Grassland

The process of degradation on Xilamuren grassland and artificial recovery measures were carried out such as enclosure, irrigation, soil loosen and reseeding, hay covering. Vegetation investigation, soil fertility assay and germination of soil seed bank were conducted to compare the recovery effects on degraded grassland in this region and the advantages and disadvantages among these techniques. Results showed that irrigation had most obvious effects on degraded grassland recovery; enclosure was also effective, but just 50% of irrigation effectiveness in generally. Soil loosen, reseeding and hay covering interfered the vegetation recovery.