Figure 4
From: Simulating the carbon balance of a temperate larch forest under various meteorological conditions
Simulated annual variations in forest production; (a) gross primary production (GPP), (b) net primary production (NPP), (c) net ecosystem production (NEP), (d) autotrophic respiration rate (Ra), (e) heterotrophic respiration rate (Rh) and (f) leaf area index (LAI) with the decrease in tree density (forest stand development). Eight simulations were conducted under the following conditions: (1) the present climate conditions (control; see Fig. 7), (2) 3°C increase in air temperature (+3°C), (3) 5°C increase in air temperature (+5°C), (4) 10°C increase in air temperature (+10°C), (5) doubled CO2 concentration (2 × CO2), (6) combined effect of (2) and (5), (7) combined effect of (3) and (5), (8) combined effect of (4) and (5).