Impact of land preparation methods on grassland communities in southern Ningxia

The study on the dynamic plant community characters of recovering degraded steppe under different land preparing methods was studied in southern Ningxia by surveying the fixed sample plots. The results indicated that the heterogeneity of habitat affected the plant community structures with land preparing method of fishscale pit at certain temporal scale. The rest land preparing methods had a little effect on plant community structures. The order of plant diversity in 3 sample plots was fishscale pit 88542 level furrow enclosed natural steppe. As for the enclosed natural steppe for 5 years, the fishscale pit and level furrow methods had a little effect on the plant community and the natural ecological factors had a greater effect.