Abstract: Based on researches on the model of environmental Kuznets curve conducted by domestic and foreign scholars, per capita GDP and environmental pollution data of Tongchuan City, Shaanxi Province, China during 2001-2013 as main research object, the model of environmental Kuznets curve was established, and the regression analysis were performed with SPSS. On that basis, this paper collected the optimal environmental Kuznets curve models of suitable for the per capita GDP and pollution characteristics about Tongchuan during, and environmental Kuznets curve was produced, and analyzed them. The results show that environmental improvements will not happen automatically with economic growth. The economic growth is a necessary and not a sufficient condition for environmental improvements. The data between per capita GDP and pollution characteristics for Tongchuan did not produce an inverted-U curve. The per capita GDP grow synchronously with industrial wastewater discharge and industrial COD emission. It presented the left of inverted-U curve between the industrial emissions of NH3-N, waste gas, SO₂, smoke and solid waste produced volume and per capita GDP, and promising reaching the inflection point. There is still a great environmental pressure in Tongchuan. With the efforts from all the respects, the environmental and economic development could progress in coordination. The discusses on economic and environment in Tongchuan will be helpful to elaborate the quantitative relationship between economic growth and environmental pollution, and to analyze the changing regularity between the economic growth and environmental quality. Moreover, it provides policy-making reference and management measures for coordinated development of environment and economy in Tongchuan, also it sets up scientific foundation for the comprehensive implementation of "Ecological and Leisure City".

Key words: TongChuan City, environmental Kuznets curve, economic growth, environmental pollution