关键词: 锡林郭勒盟, 露天煤矿, 排土场, 生物笆措施, 沙障措施

Abstract: Effective vegetation restoration in the soil stacking area will contribute to the restoration of ecological functions in the mining area and its surrounding areas. Different restoration measures have different effects on vegetation restoration. Different restoration measures provide different environments for vegetation restoration,resulting in differences in vegetation community succession. Taking the soil stacking area of the West No. 2 open-pit coal mine in Shengli Coalfield,Xilinguole League as the research object,restoration work was conducted in 2007. This study investigated the plant communities under three different restoration measures in the 13th year of restoration. The three different restoration measures were respectively the straw coverage measure (SW),the sand barrier coverage measure (SZ),and the manual strip sowing measure (RT). The slopes under different measures were divided into four heights:upper slope (PS),middle slope (PZ),lower slope (PX),and platform (PT). The results showed that (1) the restoration effect of the coverage measures was obvious,and species diversity was significantly higher than the RT measure,with the SW measure having better effect. (2) As for the height under the same restoration measure,the PT had the best restoration effect,and slope gradient had a certain impact on plant growth. (3) The annual herb Brassica rapa var. oleifera,the perennial herb Elymus dahuricus,and the shrubs Caragana microphylla and C. korshinskii had good adaptability to the ecological environment of the soil stacking area in Shengli Coalfield.

Key words: Xilingol league, Open-pit coal mine, Soil dumping site, Biological fence measures, Sand barrier measures