关键词: 镉污染, 摩西斗管囊霉, 富集, 芦苇, 狼尾草, 根内根孢囊霉

Abstract: To promote the vegetation recovery in gold mining area, different measures wereapplied in the abandoned field of the gold mining area in Altai Mountain, which is a conservation region for the source of Irtysh River and Ulungur River. We evaluated the effects of these measures on the restoration of soil and vegetation. The results showed that: (1) Gold mining altered topography. The altitude difference of the gold mining area increased from 2-3 m per 100m long to approximately 5 m after the destruction of gold mining. The parent material of soils was seriously damaged. Compared with the natural grassland, the soil/gravel ratio decreased by 98.5% and plant aboveground biomass decreased by 96.8% in the abandoned filed. Soil and vegetation factors were the key factors for ecological restoration. (2) Under covering soil treatment, the number of plant species was increased. The vegetation diversity index under the treatment of basin irrigation and corralling flock was significantly higher than that under drip irrigation and mud spraying treatment. The soil/gravel ratios under basin irrigation measure were 19.1 and 5.8 times as high as that of drip irrigation and mud spraying. (3) Under the measures of covering soil + basin irrigation and covering soil + corralling flock, plant biomass was significantly higher than that of other combined measures (P<0.01) and the soil/gravel ratio was relatively high. Consi dering the recovery effect and the cost of the basin irrigation measure, we concluded that the basin irrigation is of great significance to the ecological restoration of the gold mining area.

Key words: enrichment coefficient., Rhizophagus intraradices, Funneliformis mosseae, Pennisetum alopecuroides, cadmium pollution, Phragmites communis