Study On Sustainable Development Evaluation Of County Based On PCA And DEA Method

Since the concept of sustainable development proposed study on sustainable development around the economy,the coordinated development of resources,environment and society from the theory and practice of deepening.How to determine whether the sustainable development of the county,as well as how to quantify the level of development of the county,the paper have launched a series of studies.On the basis of research at home and abroad,based on a literature study and reliability analysis method as the way to build a sustainable development indicators Tongshan County system.Principal component analysis(PCA)and data envelopment analysis(DEA)model,Tongshan County 2009--2013 years of sustainable development comprehensive evaluation results showed that:From 2009 to 2013,the Sustainable Development of Tongshan County level rise fluctuations.Where in 2010 and 2013,?=1,S1-=S2-=S1+ = S2+=0,indicates that this year the decision unit C2R model DEA effective,indicating that economic development and environmental quality on the harmonization,effectiveness,and input and output at its best,and to achieve the benefits of scale and technology are valid.In 2009,2011 and 2012,9<1,the evaluation results indicate that three DEA relatively ineffective,indicating that the,three-year investment of resources and outputs directly benefit not reached the best condition,there may be a deficit this output decision unit 3 or enter the remaining states.But S1-=S2-=S1+ = S2+=0,which indicates that an effective technique,described in the help of technology,inputs and outputs have a certain validity.Ecological footprint method validation Tongshan County Sustainable Development Assessment As a result,2010-2013,per capita ecological footprint Tongshan County was less than the per capita ecological carrying capacity,ecological surplus presented,indicating excellent Tongshan County,the overall ecological environment,sustainable development in good shape,with PCA-DEA analysis and evaluation of the results are consistent.Overall,from 2009 to 2010,the development trend of Tongshan County,sustainable upward trend.2011 and 2012 fluctuated downward trend,indicating the presence of decoupling and the contradiction between economic development and environmental quality.In 2013,the development trend of sustainable Tongshan County in turn tends to a good level,which is inseparable from the local environmental protection,stable economic development,environmental quality has been improved.