Shoot morphology and leaf gas exchange of Fagus sylvatica as a function of light in Slovenian natural beech forests

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Opis

Tytuł:: Shoot morphology and leaf gas exchange of Fagus sylvatica as a function of light in Slovenian natural beech forests
Autorzy:: Cater, M.
Powiązania:: https://bibliotekanauki.pl/articles/41573.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: shoot
plant morphology
leaf
gas exchange
Fagus sylvatica
light
Slovenia
natural beech forest
beech forest
plant growth
Źródło:: Dendrobiology; 2010, 64
1641-1307
Język:: angielski
Prawa:: Wszystkie prawa zastrzeżone. Swoboda użytkownika ograniczona do ustawowego zakresu dozwolonego użytku
Dostawca treści:: Biblioteka Nauki
: Artykuł

Przejdź do źródła

Five plots with young beech trees of the same age (13–15 years) were established to study the threshold, where plagiotropic growth becomes evident as the consequence of the reduced light intensity. Trees were equally distributed along the light gradient and were divided according to light conditions (Indirect Site Factor, ISF) into three groups of stand conditions: close canopy stand (ISF<20), edge (2025). Morphological and physiological responses of young beech were studied between managed and old growth forest and between different forest complexes (Pohorje and Kocevje region) on natural beech sites. Criteria for the plagiotrophic growth was the relation between tree length and tree height (l/h) under various light conditions. Under controlled conditions (temperature, flow and CO2 concentration, RH, light intensity) light saturation curves of leaf net photosynthesis were measured on same trees to compare both responses between different light categories and different plots within comparable light conditions. Our study confirmed different thresholds for morphologic response between two forest complexes as well as between old growth and managed forest. Results were in accordance with physiological responses: the value of limiting light for a plagiotropic response was lower in Kocevje (17% ISF) than on Pohorje (25% ISF).

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