Research On The Key Technology Of Ecological Restoration Of Coal Gangue Storage Yard In Jiufeng Mountain,Inner Mongolia Autonomous Region

Ecological restoration in mining area is a major measure to practice the concept that clear water and green mountains are gold and silver mountains,which is of great significance to promote the construction of ecological civilization.This thesis discusses the ecological restoration technology of coal gangue pile in the mining area,which mainly includes the analysis of the ecological environment status and the research on the restoration technology of coal gangue pile.Firstly,the existing problems of the ecological environment and the ecological environment in the study area are found;secondly,the vegetation growth condition in the study area is suitable for vegetation reconstruction;then the indoor potted orthogonal experiment on the coal gangue pile in the area;finally,the outdoor landscape ecological reconstruction test is conducted to study the ecological restoration technology.Explore the feasible and effective way of suitable for coal gangue pile treatment in this area.Main conclusions of the study are as follows:By using the "habitat quality" module in the In VEST model,analyzing the change of habitat quality in Jiufeng Mountain from 1990 to 2018,it is known that the main reason for the decline of habitat quality in this area is the abandonment of cultivated land and the expansion of industrial and mining land.According to the vegetation survey around the study area,it can be seen that the plants in the study area are mainly compositae,gramaceae and legumes.Therefore,for the reconstruction process of plants in this area,perennial herbs with grasses and legumes and drought and barren resistance should be selected.According to the analysis of variance of orthogonal experiments of plant growth,the best economical formula combination is A2B1C2D3: the ratio of soil and straw addition is1:1,watering once a week,adding 75 g of fertilizer,and adding 15 g of water retaining agent.In the reconstruction experiment of coal gangue plants,the most effective plant reconstruction scheme is: only adding fertilizer and auxiliary materials are three mixed,and mud spraying;The most economical and effective plant reconstruction scheme of coal gangue ecological restoration is: adding appropriate fertilizer,fine straw,water retaining agent,and mud spraying.The above reconstruction methods can achieve the remarkable effect of plant reconstruction.