Study On Soil Physical And Chemical Properties And Enzyme Activities Of Different Species Plantation In Sihe Coal Mine

The discharge of coal gangue has caused serious damage to the ecological environment of the mining area.The restoration of the ecological environment is a topic that accompanies coal mining from beginning to end.Vegetation restoration is a common method for ecological restoration.The study of vegetation restoration can guide the future restoration of gangue in the area.In this paper,the changes of soil physicochemical properties and enzyme activities under four vegetation restoration modes(locust,locust,locust,locust,locust,cypress and torch)in the lvniao mountain of the temple river mine were studied,and the variance analysis was carried out,and the following conclusions were drawn.After the vegetation restoration,the physical properties of the soil changed obviously,the soil weight decreased,the soil water content and porosity increased,which was conducive to plant growth.The improvement effect of the four modes was most significant.Soil p H has increased to varying degrees through vegetation cover improvement.The soil has changed from the weak acid soil gradually to neutral soil,the soil nutrient content has also increased to varying degrees.In each soil layer of the Robinia pseudoacacia cv.Idaho-Amorpha fruticosa Linn.model and Robinia pseudoacacia cv.Idaho-Hus Typhina,the soil p H value is greater than 6.5,and the soil is modified to be neutral.The effect of the torch pure forest model on soil improvement is general,only 0-20 cm in the soil layer is neutral,and other soil layers are still acidic.The accumulation of organic matter,available nitrogen,available phosphorus and available potassium in soil of the Robinia pseudoacacia cv.Idaho-Amorpha fruticosa Linn.Model is the most obvious.The activity of catalase and protease in soil was higher than that of the control group in the vegetation recovery mode.In the same recovery mode,the activity of catalase and protease decreased with the increase of soil depth,and the same change trend was maintained with the control group.In summary,vegetation restoration model of the Robinia pseudoacacia cv.Idaho-Amorpha fruticosa Linn.model has the best effect on soil improvement,followed by locust-torch model.