A kind of vegetation restoration method of acid coal gangue hill

Abstract

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. The method includes: selecting different vegetation community configuration schemes and mountain surface covering soil thicknesses according to the greening requirements of the coal gangue hill, planting shrubs in holes and artificially sowing grass seeds for greening, and regularly tending and managing during the growth period. The method of the present invention combines 7 kinds of herb plants and 3 kinds of shrubs, and obtains 3 sets of vegetation restoration models suitable for coal gangue hills with different greening standards, which can effectively improve the ecological environment of coal mining areas, beautify local landscapes, and achieve social, economic and environmental benefits. high. The method of the present invention proposes the optimal amount of grass species and the planting density of shrubs for the vegetation restoration project of coal gangue hills, reduces the treatment cost of acidic coal gangue hills, improves the comprehensive benefits of greening and treatment of coal gangue hills, and is a technical field of coal gangue vegetation restoration A practical method that is easy to promote is provided.

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