BF, Forestry Library, Ljubljana (GIS)
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Poškodbe mladih sadik navadnega divjega kostanja (Aesculus hippocastanum L.) zaradi sončevega ožiga : diplomsko delo - univerzitetni študij = Sunscorch injuries on young horse chestnut (Aesculus hippocastanum L.) trees : Denis ŽitnikŽitnik, DenisPri pregledu zdravstvenega stanja drevoreda navadnih divjih kostanjev (Aesculus hippocastanum L.) na Cesti v mestni log v Mestni občini Ljubljana smo opazili številne neprerasle poškodbe na deblih ... dreves zaradi sončevega ožiga. Za potrebe nadaljnjih raziskav je bilo meseca aprila 2009 iz drevoreda odstranjenih sedem dreves. Drevesa so bila podrobno preiskana, nato pa smo jihrazžagali na kolute iz katerih smo pridobili posamezne vzorce za naše raziskave. Vlažnost lesa smo določili gravimetrično. Vitalnost parenhimskih celic smo dokazovali z jodovico. S pomočjo sistema za analizo slike smo na kolutih izvedli meritve površin živih oz. mrtvih tkiv. Raziskava je pokazala, da je v drevoredu zaradi sončevega ožiga poškodovanih 97 % dreves. Ugotovljenoje bilo, da se pri tovrstnih poškodbah na deblu drevesa pojavljata dva tipa poškodb. Prvi tip poškodbe predstavljajo odprte (neprerasle) rane na deblu, zaradi katerih je les neizogibno podvržen razkroju. Pri drugem tipu poškodbe pa se neprerasle rane pojavljajo v kombinaciji s poškodbami skorje. Poškodbe skorje je mogoče razdeliti na nekaj značilnih morfoloških tipov, ki najverjetneje predstavljajo tudi razvojne faze poškodbe skorje. Obseg poškodovanosti se stopnjuje od krošnje proti bazi drevesa. Delež mrtvega lesa na prečnem prerezu debla je znašal tudi do 60 %. Zaznali smo izjemno visoko variabilnost vlažnosti lesa pri poškodovanih tkivih.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [D. Žitnik], 2010Language - slovenianCOBISS.SI-ID - 2989734
Author
Žitnik, Denis
Other authors
Oven, Primož
Topics
sončev ožig |
navadni divji kostanj (Aesculus hippocastanum L.) |
poškodbe dreves |
drevo |
skorja |
les |
simptomi
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Gozdarska knjižnica enota BFGO |
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BFGO Knjižnica DN 0000001185 IN: 12010000076 BFGO Knjižnica DN 1185 IN: 12010000076 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Žitnik, Denis | ![]() |
Oven, Primož | 11223 |
Source: Personal bibliographies
and: SICRIS
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