Research Methods and Application of Ecological Efficiency

Abstract

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