Study On Sustainable Development Of Construction Industry In Yangtze River Economic Belt Based On The Perspective Of Technological Progress

The construction industry is a pillar industry of our nation,but it also consumes a large energy and causes environmental pollution.In order to realize the development strategy of efficient economy and sound ecology in the Yangtze River Economic Belt,the construction industry of this region must transform its production model and achieve sustainable development.Technological progress is a decisive factor in the economic growth of construction industry,and it is also a key measure for energy conservation and carbon emission reduction.Therefore,this paper investigates its impact on the sustainable development of construction industry.Study is conducted from following three aspects.First,after analyzing the connotation of sustainable development of construction industry,an evaluation index system for the sustainable development of construction industry was established from the perspective of social economic environmental benefits and ecological costs of construction industry.And the entropy weight TOPSIS method with time variables was adopted to evaluate the sustainable development level of construction industry in the Yangtze River Economic Belt.Second,constructs a theoretical model of the impact of technological progress on the sustainable development of construction industry.Among them,from the perspective of total factor productivity of construction industry,the DEA-Malmquist index model is used to measure the impact of technological progress on the economic sustainability of construction industry.And from the perspective of “rebound effect” of carbon emissions,a decomposition model is constructed to measure the impact of technological progress on the environmental sustainability of construction industry.Finally,an empirical study was conducted based on the data of construction industry of the Yangtze River Economic Belt from 2005 to 2015.Results show that:(1)Over the past ten years,due to the improvement of social economic and environmental benefits of construction industry,the sustainable development level of construction industry in most provinces of the Yangtze River Economic Belt has been improved.The sustainable development level of construction industry in the middle reaches of the Yangtze River Economic Belt has the best performance.In terms of each indicator,the average salary of employees and the number of employees of construction industry have constantly increased,but the rate of output value and the energy efficiency of construction industry are not optimistic.(2)Overall,total factor productivity of construction industry in the Yangtze River Economic Belt has increased significantly.However,in recent years,it has shown a downward trend.From the trend of total factor productivity of construction industry,there is a significant catch-up phenomenon among the provinces in the Yangtze River Economic Belt.The upper and middle reaches of the Yangtze River Economic Belt play a role of “catch-up” among them.The technological progress can reduce the carbon emissions of construction industry in the Yangtze River Economic Belt,but there is no significant gap in carbon emission reduction between the upstream and downstream.This is mainly due to the rebound effect of carbon emissions that largely offsets the carbon emissions reduction from the increase in carbon emissions efficiency of construction industry.Finally,combined with the research conclusions,put forward targeted recommendations to promote the sustainable development of construction industry in the Yangtze River Economic Belt.