Research On The Direction Of Reclamation And Utilization Of Industrial And Mining Wasteland In The County

With the upgrading of industrial policies and the rectification of mining enterprises,the areas of desert land of industrial mining area in China have increased rapidly in recent decades,however,the land reclamation rate is relatively low.In order to eliminate the adverse effect of desert land of industrial mining area on the environment,it is necessary to conduct the contiguous features of industrial of desert land of industrial mining area.This paper collects relevant data of industrial and mining wasteland in Xuyi County,estimates the value of ecosystem services in Xuyi County,sets up reclamation scenarios based on the results,calculates the multi-scenario simulation results of the landscape pattern,and makes suitable directions for better simulation results To determine whether it is suitable for the rehabilitation direction.The main conclusions are as follows:(1)All townships in Xuyi County are distributed with different sizes and numbers of abandoned land,with a total area of 17.64 km2.Among them,Guiwu Town,Heqiao Town,and Gusang Town have the most abandoned land,and the total area of abandoned land accounts for a relatively large amount,all reaching 20 %the above.The reclamation direction of the reclaimed areas includes cultivated land,forest land,mine parks,squares and other reclamation directions,which relieves the pressure of occupation of cultivated land to a certain extent,increases food production,and forms a benign agricultural atmosphere.(2)Calculate the value of ecological services through the equivalent factor method,revise the equivalent through vegetation coverage and biomass,obtain the equivalent factor of service value in Xuyi County,and obtain the service value of each category based on this,and obtain cultivated land and garden land The service value of forest land,grassland and construction land are respectively 18.29,5.83,14.65,6.45,and 0.05 billion yuan.Cultivated land and forest land have higher service value,followed by grassland and garden land,and construction land has the lowest service value.According to the service value of each reclamation direction,the construction land with low value is eliminated,and the reclamation is set to be cultivated land,garden land,forest land and grassland.The landscape pattern after the reclamation in Xuyi County is analyzed.According to factors such as topography,soil texture and other factors,Xuyi County is divided into two areas,the southwest and the north.The Fragstats software is used to calculate the landscape pattern index of different scenarios in each district.From the multi-scenario simulation results of the landscape pattern of industrial and desert land of industrial mining area in Xuyi County,it can be concluded that the reclamation direction in the southwest area is forest land,and the reclamation direction in the northern area is cultivated land.This is conducive to improving the level of land intensive management in the study area,and its land use efficiency is also Higher than other scenarios.(3)According to the simulation results of the landscape pattern,the reclamation is cultivated land and forest land,so the suitability of reclamation is evaluated for these two land types,and 8 evaluations of slope,altitude,organic matter,p H,texture,phosphorus,potassium and nitrogen are selected.Factors,the weight is determined by the analytic hierarchy process,and Arc GIS is used for weighted overlay analysis to obtain the evaluation results of the suitability of industrial and mining abandoned land reclamation.Most areas of industrial and mining wasteland are second-class suitable for cultivated land and forest land,and a few areas are first-and third-class suitable.The industrial and mining wasteland in the southwestern district of Xuyi County can be reclaimed as forest land,and the northern area can be reclaimed as cultivated land.Express this reclamation suitability evaluation process through procedures.