Figure 6

Schematic diagram of the seasonal courses of LAI, radial growth and the carbon reserve ratio with phenological events for a deciduous tree. t ₀ , t _b and t _f are the onset of bud dormancy, the timing of bud burst and the completion of leaf fall, respectively. (i) is the combined duration of autumn and winter dormancy. The duration of (ii) is the ontogenesis development stage toward bud burst. In addition, the duration of (iii) and (iv) are the stages of LAI increment from bud burst to its maximum and LAI decrement from the maximum to the completion of leaf fall. The timings D _s and D _e mean the onset and end, respectively, of carbon reservation in the storage pool of woody nonphotosynthetic organs. For simplicity, D _s was assumed to be identical to D _e (i.e., D _s = D _e = D _x ) in this study.