[Seasonal dynamics in photosynthetic characteristics and growth of saplings and their response to soil warming].

In order to understand the response and adaptation mechanisms of photosynthetic characteristics and growth for saplings in the subtropical region to global warming, we conducted the root-box warming experiment (ambient, ambient+4 ℃) at the Sanming Forest Ecosystem National Observation and Research Station in Fujian Province to investigate the effects of soil warming on the photosynthetic characteristics and growth of saplings in different seasons. The results showed that the net photosynthetic rate () and stomatal conductance () of significantly decreased in summer compared with in spring and autumn. Soil warming had no effect on the and of .