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Dimenzije celic v branikah alepskega bora in njihova odvisnost od klimatskih dejavnikov : diplomsko delo - visokošolski strokovni študij = Dimensions of cells in annual rings of Aleppo pine and their dependence on climatic factors : graduation thesis - higher professional studies
Pečovnik, Marko, [1985-]
Na prečnih prerezih lesa alepskega bora (Pinus halepensis) z rastišč Jarafuel, Maigmo in Guardamar v Španiji smo v različnih datiranih branikah s pomočjo sistema za analizo slike raziskali dimenzije ...celic: dvojno debelino tangencialnih celičnih sten (merjenih v radialni smeri) in nato še radialno širino celotne celice (od srednje lamele do srednje lamele). Za vse omenjene branike smo izdelali traheidograme (grafe radialnih dimenzij traheid in dvojnih debelin celičnih sten v 3 radialnih nizih od začetka do konca posamezne branike). Tipične traheidograme smo predstavili skupaj z mikroskopskimi slikami merjenih nizov. Za branike rastišča Maigmo (MAI2003) in Jarafuel (JAL003), ki so nastale leta 2003, lahko rečemo, da so normalne z bolj ali manj normalnim ranim in kasnim lesom ter postopnim prehodom med obema. Na rastišču Guardamar so v letu 2005 vsa proučena drevesa vsebovala gostotno variacijo tipa L (ranemu lesu podoben pas celic v kasnem lesu). Pri oceni vpliva klimatskih dejavnikov na nastanek gostotne variacije tipa L se je izkazalo, da so na njen nastanek vplivale jesenske padavine, ki so sledile poletni suši.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [M. Pečovnik], 2012
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