Research on the Efficiency of Building Waste Resource Utilization in China:Based on SBM-Malmquist Index Model
The production of construction waste in China has reached 3.5 billion tons,and improving the efficiency of construction waste resource utilization has received widespread attention.This article is based on the Undesirable Slacks-Based Measurement Malmquist(SBM-Malmquist)model of unexpected output and calculates the efficiency and spatiotemporal evolution trend of construction waste resource utilization in 30 provinces from 2013 to 2021.The results show that the efficiency of construction waste resource utilization in various provinces of China is still at a relatively low level,with some provinces in the northwest region having higher efficiency than economically developed provinces in the east,with Shaanxi Province having the highest resource utilization efficiency.The amount of construction waste generated is the main reason for the difference in resource utilization levels between the East and the West,indicating insufficient investment in industry resource utilization technology and related policies.From the perspective of growth trends,the efficiency of construction waste resource utilization in China steadily increased from 2013 to 2020,and fluctuated in 2021.Chongqing,Shaanxi,and Jiangsu provinces rank among the top three in terms of development speed,with growth mainly coming from the improvement of industry technology level.Based on this,it is proposed to increase the investment in the construction waste resource utilization industry,improve the level of scientific and technological innovation,and formulate relevant policies according to local conditions.
construction wasteresource technologySBM modelMalmquist index
NETL
NSTL
万方数据
