Analysis of Soil As Pollution and Investigation of Dominant Plants in Abandon Gold Mining Area

Soil arsenic (As) pollution in mining areas have seriously affected the surrounding environment and human health. To explore degree of soil As contamination phytoremediation strategies, a study was undertaken to identify suitable native plants for area. Geo-accumulation index potential ecological risk were sed assess degree. content dominant analyzed by enrichment coefficient. The results show that (1) pulp deposition area had most serious largest index. (2) composition plant community dominated herbaceous plants, among which gramineous, composites legumes are types vegetation restoration (3) species diversity lower polluted (4) with strong ability Erigeron annuus (L.) Pers., Periploca sepium Bunge, Setaria viridis Beauv., can be considered as As-repair plants. This provide basis reference areas.