Taking the Sheila Muren grassland as the research object

based on the comparision of soil mechanical composition

moisture content

density

porosity

organic matter content

alkaline hydrolysis nitrogen

available phosphorus

available potassium and other indicators in degraded grassland with different terms of enclosure

the effects of enclosure on degraded grassland soil properties was explored. The results showed that with the increase of enclosed years

0-20 cm layer soil clay content and porosity increased

but the bulk density and moisture content gradually reduced year by year in grassland. As the enclosed time going on

the soil available potassium content reduced

but soil organic matter

available phosphorus and alkaline hydrolysis nitrogen content increased gradually. Regression analysis results indicated that the change in soil organic matter

alkali-hydro nitrogen

available phosphorus and available potassium content had significant correlation with enclosed years. Thus

it can be seen that enclosure is an effective measure to promote soil improvement and vegetation restore in degrded grassland.