Guanzhong Economic Development Model Under Water Environment

There is close relationship between economic development and water environment.A large amount of researches on the relationship between water environment and economic development have been carried out,in which "Environmental Kuznets curve"(inverse U-shaped curve) theory is a classic and important result.However, at present most of the studies only verified the inverted U-shaped relationship between the indicators of water environment and economy, in which the in-depth study and discussion lacked. Environmental total factor productivity reflects the relationship between economy and environment from economic development model. The researches mainly focus on national scope, the provinces, industry and agriculture in China. There is less research about municipal. And there are different environmental efficiency values due to the different undesirable outputs, so it is necessary to choose the specific pollutants to study environmental efficiency and Environmental total factor productivity according to the area. There is serious water pollution in Guanzhong. This dissertation took Guanzhong region as the study area. Here we select Xi’an as the representative area to study further the relationship between the quality of the water environment and economic development.On the basis of rigorous selecting and treatment for the water environmental indicators and economic indicators, a derivative constraint to reduce the arbitrary of the formulais presented, and the water quality-economic experiential formula of Xi’an is then constructed.For comparative analysis, the water quality-economic experiential formulas ofTongchuan, Baoji,Xianyang and Weinanare constructed as well. We obtain the environmental efficiency and environmental total factor productivity value under water environment constraints, and discuss the influencing factors by PLS. Not only has important scientific significance for the study the relationship between the economic development and the water environment, but also has certain of application value. Themain conclusions can be summarized as the following:(1)First we construct the water quality-economic experiential formulas of Xi’an. Based on the method and step, we construct the water quality-economic experiential formulas of Tongchuan,Baoji,Xianyang and Weinan.(2) We choose labor, capital and energy as input, GDP as desirable output, the quantity of chemical oxygen demand and ammonia nitrogen emission as undesirable output. The environmental efficiency value under water environment constrainare calculated by using SBM. We find that the utilization of input will be higher with the time going on, and the relationship of economic development and water environment achieve a high degree of balance. Also the environmental efficiency value of Xian and Baoji is1, the relationship of economic development and water environment of Xian and Baoji is much balance than three cities.(3) We calculate the environmental total factor productivity under water environment constrain. The environmental total factor productivity values of five cities become larger with the time going on (except for a certain years); the technology improvement is the important factor. The environmental total factor productivity value of Tongchuan is the biggest in the five cities. The economic development models of the five cities change from extensive to intensive.(4) We choose economic factor, populationfactor, environment factor and international economics to analysis the gap between the environmental efficiency and environmental total factor productivity of five cities. The results indicate that the quantity of ammonia nitrogen emissions becomes more and more important; capital deepening contributes to promote management innovation and technology innovation; the role of electric power is gradually increasing to environment protection; the high of economic development level benefits to the improvement of environmental efficiency and environmental total factor productivity.