Zveza med širino branike in električno upornostjo živih tkiv pri jelki (Abies alba Mill.) na Ravniku

Levanič, Tom (author), Torelli, Niko (author), Zupančič, Martin (author)

Na Ravniku smo sistematično raziskali 40 različno prizadetih jelk (Abies alba Mill.). Ugotovili smo, da je zveza med električno upornostjo živih tkiv (ER) in širino branike, nastale v istem letu, obratnosorazmerna in ni tesna. Višina odčitka se med leti spreminja in je v veliki meri odvisna od klime v preučevanem letu. S poškodovanostjo se je variabilnost odčitkov povečevala in to neodvisno od klimatskih razmer v preučevanem letu. Velika variabilnost odčitkov vodi ob nepoznavanju ekoloških dejavnikov v preučevanem letu k napačni ocenitvi fiziološkega stanja drevesa.

• Language: Slovenian
• Keywords: jelka, Abies alba, širina branike, električna upornost, Ravnik, Slovenija
• Work type: Not categorized
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publisher: Gozdarski inštitut Slovenije, Oddelek za gozdarstvo in oddelek za lesarstvo Biotehniške fakultete
• Year: 1997
• Number of pages: Str. 125-140
• Numbering: št. 54
• PID: 20.500.12556/RUL-69667
• UDC: 630*81+630*17Abies alba (Mill.)(497.4)
• ISSN on article: 0351-3114
• COBISS.SI-ID: 162185
• Publication date in RUL: 10.07.2015

Record is a part of a journal

• Title: Zbornik gozdarstva in lesarstva. forest and wood science & technology
• Shortened title: Zb. gozd. lesar.
• Publisher: Gozdarski inštitut Slovenije, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire, Biotehniška fakulteta, Oddelek za lesarstvo
• ISSN: 0351-3114
• COBISS.SI-ID: 6206978

Secondary language

• Language: English
• Title: Relationship between electrical resistence of the living tissue and tree-ring width in silver fir (Abies alba Mill.) on Ravnik (Slovenia)

Abstract

On the research plot Ravnik 40 systematically selected silver firs (Abies alba Mill.) were analysed. It was established that the relationship between electrical resistance of living tissues (ER) and tree-ring formed in the year of measuring was negative and not high (r2=0,47). Year to year variation of ER is highly variable and is strongly influenced by climate. The variability of ER measurements increases with decreasing tree vitality and is independent of the climate. High variability together with improper interpretation of ecological factors can lead to false assessment of physiological tree condition.

• Keywords: electrical resistance of living tissues, forest decline, silver fir (Abies alba Mill.), dendrochronology, Slovenia