Research Methods and Application of Ecological Efficiency

In recent years, the frequent occurrence of extreme weather is a global problem facing all countries. With excessive consumption energy and massive emission carbon dioxide represented by energy-intensive industries, it has caused serious negative impacts on social economic development ecological environment, environment. Therefore, very important to deal with relationship among development, resource input Eco-efficiency an tool for quantitative analysis ratio between output input, which closely related sustainable economy, environment resources. By reviewing domestic foreign literature, this paper summarizes concept, evaluation method application efficiency, concludes that (1) The core concept efficiency obtain more benefits less input; (2) Evaluation methods efficiency: Mainly include data envelopment (DEA), index method, footprint single SBM in measurement DEA model widely used; (3) eco-efficiency mainly involves enterprises, industries regions, there are few researches enterprise eco-efficiency.