Figure 5.
The relationship between net photosynthetic rate (AS) and the ratio of intercellular CO2 concentration (Ci) to atmospheric CO2 concentration (Ca) for woody plants (a), and ferns (b). All data were obtained from the steady-state light response at 2000 μmol m−2 s−1 PPFD. □ is Alnus formosana; △ is Salix Warburgii; ▽ is Ficus microcarpa; ▲ is Ardisia crenata; ▼ is Ardisia cornudentata; ○ is Pyrrosia lingus; ⊕ is Asplenium antiquum; ● is Diplazium donianum; ◆ is Archangiopteris somai. AS for ferns and understory shrubs measured at 75% relative humidity were from [3].