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Vybrané ekofyziologické parametry stromů použitých při rekultivacích degradovaných půd v Etiopii
 Velanová, Jana
Ecophysiological parameters, such as chlorophyll fluorescence and stomatal conductance (gs), provide a quantitative information on the effect of the stress factors on the plant physiological processes. Here we use gs and chlorophyll fluorescence as a proxy to assess the physiological vitality of 18 tree species used for the restoration of degraded land in Ethiopia. As for the fluorescence, we utilized parameters of yield upon full sunlight (QY) and ratio of variable to maximum fluorescence in darkness (Fv/Fm). Highest levels of gs and fluorescence were found in Sesbania bispinosa a Acacia saligna. These species were considered as least affected by the stress factors. The lowest levels of the above mentioned parameters were found at Podocarpus falcatus. Using these parameters we assessed actual physiological vitality of the trees. Other factors, considered before the use of these species were the invasiveness, wood properties and amelioration function. Suitable native species for the restorations may be Sesbania bispinosa and Acacia tortilis.
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