China's population continues to grow,the proportion of the aged is getting larger,and the pressure on employment and social security is mounting. 人口總量繼續增加，老齡人口比重上升，就業(yè)和社會(huì )保障壓力增大。
The Chinese population time series models have been formulated, but the Shaanxi population time series model has not been researched into. 對全國人口總量時(shí)間序列模型，已進(jìn)行了一定的研究，對陜西省人口總量時(shí)間序列模型尚未研究。
