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Sezonska variabilnost električne upornosti kambijeve cone izbranih drevesnih vrst v urbanem okolju : diplomsko delo - univerzitetni študij = Seasonal variability of cambial electrical resistance of selected tree speciesin urban environment : graduation thesis - university studiesJager, Dušan, gozdarPreučevali smo vitalnost mestnih dreves z merjenjem električne upornosti živihtkiv (CER) v drevesu z instrumentom, imenovanim Tree tester. Meritve smo opravljali enkrat mesečno med rastno sezono ... 2005, od meseca maja do meseca oktobra. Drevesa smo ocenili tudi vizualno in jih razvrstili v skupine po prizadetosti krošnje zaradi neustrezne nege (obglavljena drevesa) in prizadetosti krošnje zaradi posipnih soli ter zdrava oz. referenčna drevesa. Drevesa smo razvrstili tudi v razširjene debelinske razrede po premeru debla vprsni višini. Raziskava je potekala na najpogosteje zastopanih drevesnih vrstah, ki rastejo v MO Ljubljana. Te vrste so Acer platanoides L., Acer pseudoplatanus L., Acer saccharinum L., Aesculus hippocastanum L., Aesculus x carnea Hayne., Fraxinus excelsior L., Platanus x hispanica Mill. ex Muenchh., Populus nigra L., Salix x sepulcralis Simk., Tilia sp. Interpretacija vrednosti električne upornosti živih tkiv mestnih dreves je zahtevna zaradi vpliva številnih dejavnikov, ki delujejo vzajemno. Ti dejavniki so: drevesna vrsta, starost, rastne razmere, čas v letu, vitalnost dreves, debelina živih tkiv, mehanske poškodbe zaradi neustrezne nege, polucija in klimatski dejavniki. Zaradi zahtevne interpretacije vrednosti CER je potrebno dobro poznavanje drevesne biologije proučevanih drevesnih vrst. Učinek obglavljanja in neustrezne nege drevesa na zmanjšanje vitalnosti dreves se je v raziskavi potrdil, medtem ko učinka posipnih soli na zmanjšanje vitalnosti z metodo CER nismo zaznali. Pri določanju vitalnosti mestnega drevja je mogoče uporabiti metodo CER kot dopolnilo k ostalim diagnostičnim metodam za določevanje vitalnosti mestnih dreves.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [D. Jager], 2008Language - slovenianCOBISS.SI-ID - 2188710
Author
Jager, Dušan, gozdar
Other authors
Oven, Primož
Topics
mestna drevesa |
električna upornost živih tkiv |
kambijeva cona |
drevesna krošnja |
vitalnost dreves |
obglavljanje |
posipne soli
Library/institution |
City | Acronym | For loan | Other holdings |
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Slovenian Forestry Institute, Forestry Library, Ljubljana | Ljubljana | GIS |
outside loan 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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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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Jager, Dušan, gozdar | |
Oven, Primož | 11223 |
Source: Personal bibliographies
and: SICRIS
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