Fig. 4 Over-winter changes in non-structural carbohydrate (NSC)
concentrations (post-winter values minus pre-winter values) and the
sugar/starch ratio in shoots and roots of oak (Quercus petraea )
and beech (Fagus sylvatica ) saplings treated with four drought
durations during the previous growing season. D0 (watering weekly), D1
(watering biweekly), D2 (watering monthly), and D3 (watering bimonthly)
represent the drought duration.