Study on Soil Remediation Effect of Copper Tailings Pond and Surrounding Vegetation Restoration Model

Abstract

Based on the poor soil and metal pollution of a copper tailings pond in southern Shanxi Province, a total of 36 survey plots of 20 m × 20 m were set up using the classic sample method to analyze plant diversity and important values, respectively, according to the physical and chemical properties of the soil. Propose different restoration methods, use ArcGIS to map the spatial distribution of nutrient elements and pollution elements, test the restoration effect, and evaluate the ecological suitability combined with the AHP analytic method. The results show that the shrub and grass layer in the study area is more abundant than the arbor layer, and the important plants are mainly corn, alfalfa, chrysanthemum and daisy; loose soil, deep plowing, extra soil and plant mulching have obvious effects on the improvement of soil physical properties , And planting legumes that grow all the year round with many deciduous leaves can significantly increase the organic matter, total nitrogen, total phosphorus and other nutrient content of the soil in the mining area; And planting red clover has good control effect on copper pollution. sampling and dumping sites within the study area are suitable for grass, the western region is suitable for forestry, the southern and eastern regions The area is suitable for farming. This study will provide a scientific basis for ecological restoration in the future according to local conditions and provide reference value for other similar mining areas.

Keywords

• copper tailings pond
• soil restoration
• vegetation restoration
• spatial distribution
• ahp tomographic analysis