Research On Evaluation And Improvement Of Ecological Carrying Capacity Of Coal Resource-based Cities In Heilongjiang Province

Coal industry is an important part of industry economics.Coal industry provides significant energy support to national economic development and social construction.In China’s primary energy production and consumption,coal accounts for absolute dominance.With abundant coal resources in Heilongjiang province,it is China’s important energy output province.Because of the decline in price and product the economy of the coal resource-based city in Heilongjiang province has faced greater downward pressure since 2014.Extensive way of coal resources mining destroys the soil and water resources.Not scientific way of burning coal and illegal discharge pollutants emissions,such as a large amount of SO2,solid waste,etc.The coal industry of high pollution emissions,causing serious environmental pollution and ecological destruction.This makes the ecological capacity of coal resource-based city facing bigger pressure.Under the transformation of resource-based city and the "big five" development "concept of 18 the fifth plenary session,promoting ecological capacity has great practical significance.By combing literature and research results at home and abroad,this paper uses system science method,the combination of theoretical analysis and empirical analysis methods to analyze ecological carrying capacity of the coal resource-based cities in Heilongjiang province and promote countermeasures.First of all,this paper uses ecological footprint method to analyze ecological capacity of coal resource-based city in Heilongjiang province.Ecological footprint method is a kind of measurement method,it depends on the productive land area determine the resource consumption of certain population,at the same time given waste absorption levels.We need to calculate certain population needs with production and absorb waste generated by the total area of land.By collecting relevant data,the formula for calculating the ecological footprint model of ecological footprint demand and ecological carrying capacity formula.Main coal resource-based cities in Heilongjiang,such as Jixi,Hegang and Shuangyashan ecological bearing capacity for data analysis.Use the lateral comparison and analysis of data,this paper provides empirical for ecological capacity pressure coal resource-based cities in Heilongjiang province.Second,the paper build a system dynamics model,used for promoting ecological capacity of coal resource-based cities in Heilongjiang province.The system of the ecological capacity is divided into three parts,economic subsystem,resources,environment subsystem and social subsystem.To analysis the relationship of the various system elements and flow path,selection of relevant indicators,construct the causal flow chart.This paper analyzes the relationship of the elements in each subsystem and feedback paths,selecting related index build causalfeedback chart and flow chart.Supply and demand of coal resources pressure index is used to measure the coal production pressure and the transformation of resources city urgent degree.Perform causal tree analysis important indicators to perfect the system dynamics model.Third,this paper uses the method of system dynamics to explore the ecological capacity increase in Jixi.According to the level of economic development and the coal development strength,this paper assessments indicators related to ecological capacity level in Jixi using the method of ecological footprint.Through the simulation scheme of three kinds of system dynamics model analysis,namely natural development model,attaching great importance to the coal industry development pattern,attaching great importance to the industry transformation and the development of science and technology,environmental protection mode this paper puts forward relevant countermeasures to improve the ecological carrying capacity,which applies to other cities.