The rising of greenhouse gas concentration caused global warming, which has become a challenge for human. Forests as the main terrestrial ecosystem, play an important regulatory role in global carbon cycle. However, because of the complexity of forest ecosystems and the limitations of human cognition, now on the study of forest carbon, there are still many uncertainties. In order to explore the effects of stand age on forest carbon pool, Chinese pine (25a,65a and 105a) and Oriental arborvitae (12a,32a and 5...