Abstract:

Although reform and opening up in China over the past 30 years has made remarkable economic achievements,China pay heavy ecological and environmental costs.Environmental pollution not only causes huge economic losses,but also severely restricts the comprehensive development of society.Therefore,scientific evaluation of the status quo of the environmental quality in different region of China is the premise of improving environment quality.It’s the foundation to construct resourcesaving and environmentfriendly society.
The issue,from the six dimensions of air,water,waste,garbage,noise,soil and so on,constructed a comprehensive evaluation system for environmental quality which contained 11 indicators（carbon dioxide emissions;industrial waste gas emission;the total emission of sulfur dioxide emissions;soot emissions;industrial dust emission;industrial waste water discharge;sewage discharge;industrial solid wastes discharged;noise level;living garbage transport volume;the amount of chemical fertilizer） and employed a evaluation method called “vertical and horizontal scatter” based on the overall differences.From different perspectives,this paper also evaluated the environmental quality synthetically and dynamically for over 30 provinces and regions during 20032010,and tested the convergence to study its internal evolution.The results are as follows.(1)From the perspective of environment pollution（ENindex1）,the environment quality of the West was the best,the East was better than the Middle,but the index of pollution in the West showed the tendency of rising.(2)From the perspective of environment cost for economic development（ENindex2）,the East was the lowest and occupied the first,the Middle was second,and the West was the worst.Shanxi,Qinghai,Guagnxi,Neimenggu were the most environmental cost regions,while Beijing,Shanghai,Tianjin,Guangdong were the least environmental cost provinces.(3) From the perspective of per capita pollution emission（ENindex3）,the East was the least and occupied the first,the Middle was second.The West was the worst and rose since 2008.(4) It was different for σ convergence.There was divergent of ENindex1 in overall country,the East,the Middle and the West,but was convergent since 2005.ENindex2 was convergent since 2007 in the East and the Middle.ENindex3 was convergent in the East and the Middle,but the overall country was divergent.(5)In the test results of absolute β convergence,ENindex1 was convergent in overall country,but ENindex2 and ENindex3 were not.The ENindex1,ENindex2 and ENindex3 in overall country were not club convergence.The ENindex1,ENindex2 and ENindex3 were club convergent in the Middle since 2007.The ENindex1 was club convergent in the West,but the others were divergent.(6) As for the tests of conditional  β convergence,ENindex1 and ENindex2 in overall country were convergent,the ENindex3 was divergent.The pattern of economic growth and human capital had significant effects on the convergence in ENindex1 of overall country,and human capital was helpful for convergence in ENindex2.All indexes in the East,the Middle and the West were not convergent.
On this basis,this paper could provide some policy suggestions for energy conservation and emission reduction in sustainable development in our country