Characteristics of soil seed bank,such as species composition,density and diversity in semiarid grassland on loess plateau under fencing and grazing conditions were investigated.The main inclusions were: 1) fencing greatly increased plant species and density of soil seed banks,palatable grass and perennial plant increased;2) with the increasing soil depth,seeds decreased quickly;3)Slope direction and position had a tremendous effect on soil seed banks.Density followed the order of southern slope > northe...
修改评论