Study On Ecological Restoration Of Mining Slope In Wuxue City

Wuxue City is rich in mineral resources and has a long mining history.To a certain extent,the economic improvement of Wuxue City is achieved through large-scale mining,which results in a large number of bare slopes.At the same time,the bare slope of the mining area has caused a series of ecological problems,such as soil erosion,air pollution,landscape degradation,environmental quality decline,and so on.Therefore,it is of great theoretical significance and practical value to select dominant plants suitable for slope growth in mining area for ecological restoration and environmental quality improvement of slope in mining area.The purpose of this paper is to solve the problems of slope ecological restoration and long-term vegetation growth,improve the current situation of slope greening "one year green,two years yellow,three years and four years can not be found",and provide a reference for the ecological restoration of bare slope formed in abandoned mining areas or mining areas in the future.Through on-site investigation and analysis and practical engineering application,this paper mainly does the following work for the ecological restoration of mining slope:(1)Preliminary screening of slope protection plants.Through investigating the basic situation of the sample plot in the mining area and the species of native slope protection plants,the species of slope protection plants were screened.Finally,19 kinds of trees,22 kinds of shrubs,13 kinds of herbs and 13 kinds of vines were preliminarily screened out as reference plants for slope ecological restoration in the mining area.(2)The determination of slope protection plants.Through the ecological adaptability evaluation and comprehensive analysis of the primary plant species,the high-quality slope protection plant species suitable for the region were screened out.The results showed that Lespedeza bicolor Turcz,Rhus chinensis Mill,Indigofera amblyantha Craib,Amorpha fruticosa Linn.,Elaeagnus pungens Thunb;Cynodon dactylon,Festuca elata Keng Alexeev,Poa annua L,Medicago sativa,Kummerowia striata;Argyreia seguinii Van.ex Levl,Ivy,Mucuna,which are more suitable for slope ecological restoration in the mining area.(3)The practical application of slope protection plants.The selected high-quality slope protection plants combined with slope ecological restoration technology were applied in mining area to evaluate its ecological restoration effect.The results showed that After six months,small shrubs such as Lespedeza bicolor Turcz,Rhus chinensis Mill,Indigofera amblyantha Craib and so on had also survived and the plant height was about 25-50 cm.Cynodon dactylon,Festuca elata Keng Alexeev,Poa annua L and Argyreia seguinii grow vigorously.The grass-shrub plant community has basically formed,and the coverage of vegetation has reached 90%.Species show abundant,vegetation concrete soil layer does not fall off,and there are no signs of erosion,the overall ecological restoration effect is better.In this paper,the selected high-quality slope-protecting plants combined with vegetation concrete technology are applied to the ecological restoration of the slope of the mining area.Through the analysis of the on-site repair effect,the vegetation grows prosperous and the overall ecological restoration effect is better.This can provide reference for the ecological restoration of the slope of the mining area in the future.