Vegetation recovery method for acidic gangue hill

Abstract

The invention relates to a vegetation recovery method for an acidic gangue hill, and belongs to the technical field of environment, ecology and solid waste disposal and utilization. The method comprises the steps of selecting different vegetation community configuration schemes and hill surface soil-covering thickness according to the requirements on greening of the gangue hill, carrying out greening by means of shrub hill-planting and artificial sowing of grass seeds, and carrying out regular rearing management in the growing period. According to the method, seven herbaceous plants and threeshrubs are combined to obtain three gangue hill vegetation recovery modes suitable for different greening standards, so that the ecological environment of a coal mine area can be effectively improved,the local landscape is beautified, and the social, economic and environmental benefits are high. The method provided by the invention has the advantages that the optimal grass seed usage and shrub planting density for the gangue hill vegetation recovery project are provided, the treatment cost of the acidic gangue hill is reduced, the comprehensive benefit of greening treatment for the gangue hill is improved, and the practical method convenient to popularize is provided for the technical field of gangue vegetation recovery.

Description

technical field [0001] The invention relates to a vegetation recovery method for acidic gangue hills, and belongs to the technical fields of environment, ecology and solid waste disposal and utilization. Background technique [0002] Coal is one of the main energy sources in my country, accounting for about 75% of primary energy consumption. Although it has declined in recent years, the dominant position of coal in the composition of primary energy consumption in my country will remain for a considerable period of time in the future. Coal gangue is an inevitable product in the process of coal mining and washing, accounting for about 10-30% of coal mining. At present, the comprehensive utilization rate of coal gangue in my country is still at a low level, and most of them are stacked nearby, forming coal gangue hills of different sizes, occupying land, and damaging the landscape. According to statistics, there are more than 5,000 coal gangue dumps in the country, with a cum...

AI Technical Summary

Problems solved by technology

However, coal gangue site conditions are poor, the medium layer for vegetation growth is thin and barren, and the water retention of gangue below is extremely poor. Therefore, the results of vegetation restoration using traditional methods are generally unsatisfactory, prone to alopecia areata, low greening rate, and even large areas of vegetation. withered

At present, in terms of vegetation restoration technology for coal gangue hills, Chinese Patent Application No. 201010580086.1 discloses a method for ecological restoration of coal gangue hills composed of plants such as sedum, brocade, and crape myrtle. However, the plant community configuration in this method is single and cannot According to different governance requirements, the plants are adjusted, and there is a lack of detailed methods for planting and maintenance

[0004] The current problems in the vegetation restoration technology of spontaneous combustion coal gangue are: how to choose different standard vegetation restoration models according to the greening needs; First, choose the plant species that are most suitable for the site conditions of the coal gangue hill; what site preparations need to be done before the vegetation is restored, and how to maintain it after the completion