The sloping-land with purple soils in Hengyang of Hunan Province,South-central China covers1.625×10^5 hm2.It is the most severe region of eco-environment,and at the same time,the most representative eco-catastropie region in South China.Therefore,ecosystem restoration of the present problem area has been focused.Since,re-vegetation is the first of any restoration program conducted,by which,land cover will be safe for further wastage.Thus,to comprehend the soil seed bank properties under different soil-usedmodels,we investigated the soil seed b...