| From a global perspective,resource depletion has become a common problem that all mankind has to face.After hundreds of years of development in the industrial age,the drawbacks of the traditional production model of consuming resources to promote development have become increasingly apparent,and have had many indelible effects on the environment.It also further restricted the development of human society.Under this severe background,the exploration of resource recycling methods is undoubtedly a good medicine to solve the problem of resource depletion,and it is also an effective way to treat the earth and promote sustainable development.From the perspective of sustainable resource utilization,this article uses 2017 data to explore the factors affecting the comprehensive utilization of urban construction waste in 292prefecture-level and above cities in my country.On the basis of investigating and understanding the status quo of construction waste treatment in my country,first analyze the comprehensive utilization status of construction waste in 292 prefecture-level and above cities across the country.The comprehensive utilization of construction waste in my country mainly presents three characteristics: First,the annual discharge of construction waste is large.And it has been increasing year by year.Second,the comprehensive utilization rate of construction waste is low and regional differences are obvious.Third,the construction waste treatment method is mainly by dumping and burying.Secondly,an empirical analysis of the influencing factors of the comprehensive utilization of construction waste in 292 cities above the prefecture level.Using a multiple linear regression model,select the number of construction waste-related companies in 292 prefecture-level cities across the country in 2017 as the dependent variable to measure the comprehensive utilization of urban construction waste;select the number of construction waste-related policies issued by each city,population density,and per capita roads Area,urban area,fixed asset investment of the whole society,gross regional product,and the proportion of tertiary industry in GDP are used as independent variables,which are substituted into the model for analysis.The samples are subdivided according to China’s three major economic regions and city scale levels,and the factors affecting the comprehensive utilization of construction waste in my country’s east,middle,and west regions and cities of different sizes are further analyzed.The research in this paper finds that the selected 7 independent variables all have a significant positive correlation with the dependent variable across the country;the sample is subdivided according to the three major economic regions and city scale levels,and it is found that cities of different regions and sizes The influencing factors of the comprehensive utilization of construction waste are different.Finally,based on the above research results,corresponding policy recommendations are given.One is to improve the relevant policies for the comprehensive utilization of construction waste,the other is to strengthen the construction of roads and other infrastructure,the third is to increase support for the development of the tertiary industry,and the fourth is to scientifically develop the urban population layout planning.In short,the comprehensive utilization of construction waste is an effective way to rationally utilize sand and gravel resources and comprehensively treat construction waste under the background of the shortage of sand and gravel resources,the increase in construction waste,and the aggravation of environmental hazards.The hazards of construction waste and the strengthening of environmental protection are of great significance. |
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