Screening method for arid and semi-arid lead and zinc mining area remediation plants

A technology for repairing plants and screening methods, which is applied in the field of screening for repairing plants in arid and semi-arid lead and zinc mining areas. It can solve the problems of complicated screening process, long screening period, and wide target range, and achieve shortened screening period, short screening period, Vibrant effect

Active Publication Date: 2016-08-24
CHINA UNIV OF MINING & TECH
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Problems solved by technology

The above-mentioned heavy metal remediation plant screening method has poor controllab

Method used

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  • Screening method for arid and semi-arid lead and zinc mining area remediation plants
  • Screening method for arid and semi-arid lead and zinc mining area remediation plants
  • Screening method for arid and semi-arid lead and zinc mining area remediation plants

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0024] Such as Figure 1 to Figure 4 Shown, a kind of screening method of arid and semi-arid lead, zinc mining area restoration plant comprises the following steps:

[0025] (1) Preliminary screening and determination of restoration plants

[0026] Combined with the climate characteristics of arid and semi-arid areas, local plants with strong vitality and short growth cycles, and plants of the same family that already have soil heavy metal lead and zinc remediation plants, the heavy metal remediation plants in arid and semi-arid lead mining areas were initially screened and determined to be alfalfa and Groundnut, heavy metal restoration plants in zinc mining area are Sedum rosea and Sedum chinensis.

[0027] (2) Field planting and field potting of restoration plants

[0028] Two field experiment sites with a size of 5m×5m were selected. Site No. ...

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Abstract

A screening method for arid and semi-arid lead and zinc mining area remediation plants comprises the steps of conducting preliminary screening and determination of the remediation plants; conducting field planting and field potting of the remediation plants; rapidly detecting the content of heavy metal in soil through a portable instrument; collecting samples, preparing sample liquids and detecting the sample liquids through a traditional chemical method in a laboratory; and determining the screened remediation plants. By the adoption of the screening method for the arid and semi-arid lead and zinc mining area remediation plants, the field potting experiment and the field control experiment are combined to ensure that the growth environments of the plants in an experimental group and a control group are similar; and the plants which are high in drought resistance, exuberant in vitality and short in growth cycle, belong to the same family and genus with the existing remediation plants and are suitable for local plantation are selected, the content of heavy metal in surface soil is rapidly detected through the portable heavy metal content determining instrument, and therefore the screening period of the remediation plants is greatly shortened. The screening method for the arid and semi-arid lead and zinc mining area remediation plants has the beneficial effects of being high in controllability and comparability, short in screening period and high in practical application value. Through the screening method, the arid and semi-arid lead and zinc mining area heavy metal remediation plants can be efficiently screened out, so that soil heavy metal pollution in the area and similar areas is effectively controlled and soil purification is achieved.

Description

technical field [0001] The invention belongs to the technical field of resources and environment, and in particular relates to a method for screening plants for repairing heavy metals in mining areas, in particular to a method for screening plants for repairing arid and semi-arid lead and zinc mining areas. Background technique [0002] Lead (Pb) and zinc (Zn) mines in the world are mainly distributed in Australia, Canada, South Africa, Mongolia and other countries. The development and utilization of lead and zinc mines have led to dramatic evolution and rapid degradation of regional ecology, especially in arid and semi-arid areas where water resources are scarce, plant coverage is low, and the ecological environment is fragile. Among them, soil heavy metal pollution is one of the most serious problems. Heavy metal pollution in soil in mining areas will not only cause changes in soil composition, structure and function, lead to land degradation, reduce soil quality, inhibit ...

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 董霁红戴文婷严网林许吉仁王辉
Owner CHINA UNIV OF MINING & TECH
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