[Objective] In order to provide the basis for vegetation restoration and management in mining area

Heidaigou opencast coal mine dump north in Zhunge'er Banner

Inner Mongolia was selected as the research object.[Methods] We investigated soil profile and collected soil samples by field surveys. Soil physical and chemical properties were analyzed and compared under 9 different vegetation restoration patterns and control plot. Soil quality was evaluated by calculating soil quality index(SQI) under different vegetation restoration patterns.[Results] All vegetation types effectively improved soil quality. Soil bulk density was the minimum in Hippophae rhamnoides Linn. shrub

which was 1.35 g/cm3. Soil moisture content was the maximum in forest composed of Pinus tabulaeformis Carr. +H. rhamnoides Linn.+Caragana korshinskii Kom.

which was 13.32%. Soil organic content was the maximum in forest composed of P. tabulaeformis Carr. +Populus sp +Salix babylonica L

which was 9.42 g/kg. Soil available N and available K contents were the highest in forest composed of P. tabulaeformis Carr.+H. rhamnoides Linn.+C. korshinskii Kom.

which was 21.32 and 90.21 mg/kg

respectively. Soil available P was the highest in C. korshinskii Kom shrub

which was 6.47 mg/kg. The best soil quality occurred in mixed vegetation composed of H. rhamnoides Linn. and C. korshinskii Kom. Single cropping H. rhamnoides Linn. shrub or C. korshinskii Kom. Shrub also improved soil quality.[Conclusion] Mixed forests of trees and shrubs composed of H. rhamnoides Linn.

C. korshinskii Kom.

H. rhamnoides Linn. and C. korshinskii Kom. play important role in soil reclamation.