Dynamic of ecological footprint and its driving mechanism are of great significance for the regional sustainable development.In this study

the productive ecological footprint per capita of Shaanxi Province during 1990-2007was calculated according to modified ecological footprint theory by Xiong Delong.Driving factors of per capita ecological footprint was analyzed by using the principal component analysis

and driving model was constructed by using the multivariate linear model.The results showed that:the ecological footprint per capita in Shaanxi Provincial increased from 0.818hm2 in 1990to 2.854hm2 in 2007

while ecological carrying capacity per person decreased slightly

and regional development showed ecological deficit.Compared with the traditional consumptive ecological footprint

Shaanxi Province occupied ecological resources of other areas before 2003

but relied on resources outputting for development after 2003.Factors such as population

economy

environment

technology and land use were closely related to ecological footprint per capita. The development of economy and increasing of heavy industry were the main factors that drive the dynamic changes of ecological footprint.