Tree age is a significant inducer factor in the change of forest structure and composition and it greatly affects the growth dynamics and distribution pattern of forests. So, the study has very important scientific implications to forest protections and managements under the background of global climate change based on the responses of radial growth of trees to climate change on different age scales. Pinus tabulaeformis carr. is an endemic species to China and widely distributed in northwestern, northeastern and northern China. Mt. Funiu in western Henan Province is located in the sensitive zone of climate transition from north subtropical to south warm temperate in eastern China, which is considered as the southern boundary of Pinus tabulaeformis distribution in eastern China. Although some studies on the relationship between tree growths and climate change had been carried out in Mt. Funiu, there are few studies on the response of tree growths to climate change on different age scales. In this paper, tree rings of Pinus tabulaeformis from the southern slope of the primeval forest in Mt. Funiu were taken and the samples were divided into two age groups based on systematic cluster analysis. Finally, different tree ring-width standard chronologies (STD) for the whole and different tree-ages were developed. The study results showed that:(1) these standard chronologies had higher value of signal-to-noise ratio (SNR) and expressed population signal (EPS),so they indicated that these contained a variety of environmental information; (2) The main limiting factors for the radial growth of Pinus tabulaeformis in Longchiman were the hydrothermal factors in May of the current year; (3) The tree-ring width growths of both older and younger Pinus tabulaeformis showed a decreasing trend, but the decreasing amplitude of the tree ring width of younger trees was much greater than that of the older; (4) The growth models of different groups of Pinus tabulaeformis were established and the most significant limiting factor of each group was determined based on models. Also the study found that the radial growth of younger Pinus tabulaeformis was more sensitive response to climate factors and more inhibited. Hence, with the global warming increasing, the growth of younger Pinus tabulaeformis will be more unfavorable in the lower altitude area of Longchiman and affect the tending and regeneration and the status of Pinus tabulaeformis population in the ecological community of the low altitude area, at last even may cause Pinus tabulaeformis to migrate to higher altitude or colder area. The results also provide some scientific basis for forest management and tending and regeneration in Mt. Funiu.