调查锡矿区生态恢复中的优势植物,在莱里山的锡尾矿区进行了现场调查,云南普罗旺斯,收集了15种优势植物和相应的根际土壤。植物根菌根感染率;铜(Cu),镉(Cd),砷(As),镍(Ni),铅(Pb),和锡(Sn)含量;并确定了根际尾矿的化学性质。计算了15种植物中6种重金属的转移和富集系数,以综合评价原生植物的应用潜力。根草尾矿的平均pH值为3.13,呈酸性。有机物,总氮,总磷,总钾,碱性水解氮气,土壤有效磷含量分别为6.07g·kg-1、5.74g·kg-1、0.62g·kg-1、8.66g·kg-1、30.84mg·kg-1和2.08mg·kg-1,表明土壤营养相对贫乏。平均Cu,Cd,Ni,Pb,As,土壤的锡含量分别为347.40、1.02、1.34、168.47、25.81和2299.02mg·kg-1。在重金属中,Cd含量达到三级污染预警值。土壤中还含有大量的Cu和Pb,表现出不同的空间分布。这个区域似乎有很高的铜风险,Pb,Cd污染。此外,OleaeuropaeaL.和EuryajaponicaThunb的根。菌根感染率高。AlnuscremastogyneBurk.,Bambusa多路复用(Lour。)Raeusch。前Schult.\'Alphonse-Kar\'R.A.Young,JuncuseffususL.,和CyperusRotundusL.var.具有较强的重金属吸收和运输能力。其他植物也适应了锡尾矿的生长环境,有可能恢复矿区。
To investigate the dominant plants in ecological restoration of tin mining areas, field investigations were conducted in a tin tailings area in Lailishan, Yunnan Provence, and 15 dominant plants and corresponding rhizosphere soils were collected. The plant root mycorrhizal infection rate; the copper (Cu), cadmium (Cd), arsenic (As), nickel (Ni), lead (Pb), and tin (Sn) contents; and the chemical properties of the rhizosphere tailings were determined. The transfer and enrichment coefficients of six heavy metals were calculated for each of the 15 plants to comprehensively evaluate the application potential of native plants. The rhizophere tailings had an average pH value of 3.13, which was acidic. The organic matter, total nitrogen, total phosphorus, total potassium, alkaline hydrolyzed nitrogen, and available phosphorus content of the soils was 6.07 g ·kg-1, 5.74 g ·kg-1, 0.62 g ·kg-1, 8.66 g ·kg-1, 30.84 mg ·kg-1, and 2.08 mg ·kg-1 respectively, indicating relatively nutrient-poor soil. The average Cu, Cd, Ni, Pb, As, and Sn contents of the soils were 347.40, 1.02, 1.34, 168.47, 25.81, and 2299.02 mg ·kg-1, respectively. Among the heavy metals, the Cd content reached a third-level pollution warning value. The soil also contained a large amount of Cu and Pb which exhibited a different spatial distribution. This area appears to have a high risk of Cu, Pb, and Cd pollution. In addition, the roots of Olea europaea L. and Eurya japonica Thunb. had a high rate of mycorrhizal infection. Alnus cremastogyne Burk., Bambusa multiplex (Lour.) Raeusch. ex Schult. \'Alphonse-Kar\' R. A. Young, Juncus effusus L., and Cyperus rotundus L. var. had a strong ability to absorb and transport heavy metals. The other plants were also adapted to the growth environment of the tin tailings, with the potential to restore the mining area.