| The heavy metal pollution not only causes the soil quality to degenerate, reduces the agricultural product quality and the output, also endangers the animal and the human health by the way of immediate contact, food chain, what is more serious is the virulent heavy metal has the confidentiality, the long-term characteristic in soil system pollution process, the accumulation, the irreversibility and the region different characteristic, at present the traditional heavy metal pollution treating method investment is expensive, the repair cost is extremely high, which needs to disturb the soil structure, can treats only the small pollution areas, and there are very difficult in big areas promotion application. Under this situation, in recent years phytoremediation technology arising at the historic moment which the repair cost is low could apply the big areas, and provide the new way for the heavy metal pollution treatment, there is a broad applying prospect.The prerequisite which applying Phytoremediation technology of soils contaminated by heavy metals is to screen hyperaccumulators, but the current domestic hyperaccumulators are rare, which greatly restricts Phytoremediation technology applications,.Based on a comprehensive investigation about the heavy metal pollution of Fujian metal mines, Datian Pb-Zn ore, Fe, Mn ore in Longyan, Liancheng Pb-Zn ore, Liancheng Mn ore, Youxi Pb-Zn ore, Youxi Pb, Zn Smelter were selected as the survey objects, mastering pollution of the heavy metal by comprehensive investigation, the plants growing the heavy metal tailings, near the production workshop, sewage drains and the surroundings of the mines were Collected, to research the plants of heavy metal enrichment plant effect which grow in Fujian metal mines, laying a foundation for screening out of hyperaccumulators. At the mean time measuring and analysing the total amounts of Mn, Pb, Zn, Cd in the soils, DTPA, HCl extract the effective amounts and the correlative between the two, Comparing the difference among four kinds of elements' DTPA, HCl extracting rate, Analysing the correlative between the the enrichment of heavy metals in the up-grond part of plants and the effective amounts ertracted by the extractant DTPA, HCl, to providing a scientific basis for studying the form of heavy metals and assessing soil environmental risk of mines areas . The main conclusions as follow:1. There were obvious differences in the content of heavy metals because of the Ore types and the different sampling sites in fujian ores, and the heavy metal content in the ore soils wererelatively high. the highest contents of Mn, Zn, Pb and Cd of the metal mine soils respectively reach 200004.56 mg·kg-1, 24717.05 mg·kg-1, 30431.86 mg·kg-1 and 438.28 mg·kg-1, which were more 10 times the soil several times or even 100 times than those in control soils.2. There were serious heavy metal pollution of single compound pollution in Fujian metal mines . the single pollution index of Zn, Pb and Cd of the six ore soils investigated were much more than 1, which indicate that the heavy metals had an impact on the growth of plants; N.L.Nemerow comprehensive pollution index were more than 3, which indicated that the ore soils had suffered from the Zn, Pb and Cd pollution, and the order of the pollution level was: Youxi smelter> Datian Pb-Zn ore > Liancheng Pb-Zn ore > Youxi Pb-Zn ore > Liancheng Mn > Fe, Mn ore in Longyan.3. The potential ecological enrichment coefficients of single heavy metal mean value in all the ore areas reached more than 6, which indicated that Cd, Zn, the Pb single heavy metal pollution achieved the extremely high level, among those the Cd pollution was most serious, and these mines potential ecological risk had achieved the very serious level, which had already posed the serious threat to the plants grow in the mines, It should be paid more highly attention.4. In the regions such as mines spots, production workshop, tailings, the sedimentation pond and the nearby regions which was the high level of heavy metal, we selected 58 kinds of plants altogether, 23 kinds of gramineae, 11 kinds of compositae, 4 kinds of cyperaceae, 2 kinds of malvaceae, there were Isachne globosa (Thunb.) Kuntze, Equisetum ramosissimum Desf. subsp. Debile, Miscanthus sinensis whose up-ground parts' heavy metal absolute contents surpassed the Pb hyperaccumulator's critical standard value of 1000 mg·kg-1. These plants might apply to repair the soils polluted by heavy metal Pb.5. The Cd content of up-ground part's of Erigeron annuus (Linn.)Pers. achieved 119.51 mg·kg-1, surpassed Cd hyperaccumulator's critical standard, and it had the strong ability of transportating Cd, the transportation coefficient achieved 1.3, was the hyperaccumulator of Cd. Mallotus apelta (Lour.) Muell.-Arg. had a great enrichment of Mn, Cd, Zn, Pb, and it could apply to repair soils compound polluted by several kinds of heavy metal.6. It was more suitable for HC1 extraction agent than DTPA extraction agent in extracting heavy metals in Fujian ore soils, the effective state of Pb extracted by the two extraction agents was significantly related to the total amounts in the soils, For Zn, the amounts of effective state of Zn extracted by the extraction agent HC1 was significantly related to the total amounts in the soils, but the effective state of Zn extracted by the extraction agent DTPA was not significantly related to the total amounts in the soils; For Mn, the effective state of Mn extracted by the two extraction agents was not significantly related to the total amounts in the soils of heavy metals.7. The heavy metal contents of the up-ground parts of most of plants were significant correlative to the effective states extracted by the extraction agents HC1, which were not significant correlative to the total amounts in the soils. For Pb, the heavy metal contents of the up-ground parts of only 4 plants like Mallotus apelta (Lour.) Muell.-Arg, Pueraria lobata (Willdenow) Ohwi, Bochioe dactyloides, Equisetum ramosissimum Desf. subsp. debile were significant correlative to he total amounts in the soils. For Zn, the heavy metal contents of the up-ground parts of only Mallotus apelta (Lour.) Muell.-Arg were significant correlative to he total amounts in the soils. The heavy metal contents of the up-ground parts of the 17 plants were not significant correlative to the total amounts in the soils.
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