Efficiency Differences And Its Influential Factors Across Provinces In China In The Presence Of Environmental Constraints

The existence of undesirable outputs has tremendous effect on efficiency evaluation.Economic efficiency which is calculated without considering the cost of environmental pollution is inaccurate and incomplete.This paper analyses the advantages and shortcomings of relevant theoretic and model which deal with undesirable outputs.It proves that the SBM model is a rational and preponderant measure to treat undesirable outputs from theory and demonstration two aspects. Then,it analyses the regional eco-efficiency conditions,differences and evolutional rules in china by this model.Some conclusions are as follows:As the environmental pollution variable is incorporated into this model,the mean eco-efficiency decreases obviously.The mid-western area has the greater sensitivity to environmental constraints and the western area is in a dilemma either to develop economy or to protect environment.Meanwhile,drawing support from the Tobit panel-data regression model,this paper detects some variables which influence the regional eco-efficiency,including variables relating to economy scale,openness,marketization,and so on.We also find that these variables have different effects on the three districts.In addition, policy implications are discussed.This article's conclusion is a beneficial supplement to current situation which lacks a set of reasonable and feasible evaluation criteria to eco-efficiency.As it is the crucial period to harmonize the development of economy and environment,the paper's policy implications will be helpful to take practical and feasible measures to achieve sustainable development of economic and environmental.