Abstract: Taking Shaanxi Province as the research object, the coupling coordination degree model was used to analyze the temporal evolution of the economy-ecology-resource coupling coordination degree in Shaanxi Province from 2005 to 2017, and its spatial heterogeneity and polarization effects were analyzed by combining GIS and TW index. The results showed that from a time-series perspective, the evolution of the economy-ecology-resource complex system in Shaanxi Province had achieved a gradual upgrade from transitional reconciliation to high-quality coordination. From the perspective of spatial differentiation, the coupling coordination state of Shaanxi Province gradually evolved into the circle state, the growth of Guanzhong region was prominent, and the fluctuation of northern Shaanxi and southern Shaanxi was obvious. From the perspective of polarization effect, the province overall effect had changed from polarization effect to diffusion effect. Xi’an was a single-core growth pole, Guanzhong area was the main contribution area of polarization effect, and northern Shaanxi first inhibited polarization effect and then promoted it. Southern Shaanxi first promoted polarization effect and then inhibited it. Combining the results of urban coupling coordination of spatial differentiation and polarization effects, Shaanxi Province was subdivided into four categories： Powerful provincial capital city Xi’an, economy-led area Guanzhong, resource-led area northern Shaanxi, environment-led area southern Shaanxi, and policy recommendations were put forward separately.

Key words: economy-ecology-resource system, coupling coordination, TW Index, polarization effect, Shaanxi Province