Study On The Accumulation And Tolerance In Plants Growing Around A Mine

Based on a field survey and analysis on habitats and vegetation and soil of Sha Ba Pb/Zn mined wastelands in Hui Xian of Gan Su province. In this paper, a mine of Hui County District composed of natural recovery of vegetation surveys and the advantages of heavy metal accumulation in plants and biological characteristics of migration of the characteristics of selected wild plants polymetal argyi patience, and a more systematic study of the field of Heavy Metal Uptake argyi and Enrichment characteristics. Mine revealed the natural recovery of vegetation in the state, the dominant plants on the accumulation of heavy metals; study of a mineral soil and wild plants argyi the distribution of heavy metals; evaluation of vegetation restoration and soil improvement goals of the plants to absorb heavy metals in the situation. The main results are as follows:(1)The results showed that 20 species belonging to 12 families and 15 genera of higher plants were found on the Sha Ba Pb/Zn mined wastelands. In vegetation composition of compositae in most gramineous times, a few species superiority, the contribution of the ecological function of community. Artemisia vulgaris,Tripolium vulgare,Erigeron annuu,Puccinellia chinampoensis,Herba Artemisiae Annuae,Digitatia ssp,Lexeris denticulata,Plantago asiatica comprehensive advantages of eight kinds of plants than accounted for more than 90% performance advantage for the mining plant.(2)8 kinds of advantages on the ground part of plant accumulation of heavy metals and biological factors vary migration. Judging from the accumulation of heavy metals,Artemisia vulgaris,Tripolium vulgare,Puccinellia chinampoensis Pb and Zn belong to the patience of plants, Artemisia vulgaris,Erigeron annuu,Herba Artemisiae Annuae,Lexeris denticulata patience are Cu plants, Artemisia vulgaris,Tripolium vulgare,Erigeron annuu,Puccinellia chinampoensis plant belonging to Cd patience. Heavy metals from the body of the biological plant migration coefficient shows that Erigeron annuu,Puccinellia chinampoensis patience are Pb plants, Artemisia vulgaris,Puccinellia chinampoensis,Lexeris denticulata are Zn plants, Artemisia vulgaris,Tripolium vulgare,Herba Artemisiae Annuae are Cu tolerance of plants, Artemisia vulgaris,Tripolium vulgare,Erigeron annuu,Lexeris denticulata belonging to Cd patience.(3)Taken together, Puccinellia chinampoensis Pb and Zn are patience plants, Tripolium vulgare and Erigeron annuu are Cd punta patience grass plant, Herba Artemisiae Annuae patience for Cu plants, and Artemisia vulgaris are Pb, Zn, Cu, Cd patience polymetal plants, can serve as a potential mining area restoration species, its mechanism of accumulation potential and patience there is a need for further exploration and study.(4)The concentrations of heavy metals in soils decreased with increasing abandoned times. Artemisia vulgaris had a better absorption capacity for zinc and lead. Correlation is significant at 0.01 level between concentrations of Cu,Zn and Pb in plants and soils.The percentage composition of heavy metals in plant increased with their amounts in soils.(5)Artemisia vulgaris in different parts of the same ground in the ability of different metals accumulated. Besides old tailings Artemisia vulgaris spoils the amount of lead in the field of underground part, other than the environment for heavy metal content is greater than the underground sections. Part Artemisia vulgaris field of 4 kinds of metals have different degrees of Zn, transport capacity in different period of biological enrichment coefficients spoils for maximum, Cu, Artemisia vulgaris Cd to transfer coefficient is larger, it can absorb enrichment of heavy metals and resistance properties.(6)Showing by comprehensive analysis that, Artemisia vulgaris is not a hyperaccumulator is a plant-rich. However, under the conditions of complex pollution, the absorption of Pb Artemisia vulgaris to 1 000 mg/kg, have more summarized.the features and potential, and biomass, fast growth, as heavy metal pollution repair plant has a good application prospect.