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Dendrokronološka in dendroekološka analiza propadajočih vladajočih in sovladajočih jelk (Abies alba Mill.) v dinarski fitogeografski regiji : doktorska disertacija = Dendrochronological and dendroecological study of dominant and co-dominant declining silver firs (Abies alba Mill.) in dinaric phytogeographic region : dissertation thesisLevanič, TomV dinarski fitogeografski regiji smo izbrali 7 raziskovalnih objektov z najmanj 15 drevesi na objekt. V raziskavo so bile vključene samo odrasle vladajoče in sovladajoče jelke ne glede na osutost ... krošnje. Sušic in umirajočih jelk nismo upoštevali. Na dveh izvrtkih ali enem kolobarju na drevosmo izmerili širine branik. Več zaporedij širin branik smo združili v lokalno kronologijo za objekt. Slovenska dinarska kronologija pokriva obdobje 1790-1995 in vizualno dobro sovpada z nemškimi. Rastni trendi lokalnih kronologij za različno prizadeta drevesa se po letu 1960 obrnejo strmo navzdol. Depresija doseže najnižjo točko leta 1976, nato pa se začne prirastekpovečevati. Obdobje depresije je najmanj prizadelo navidezno zdrave jelke, najbolj pa močno prizadete. V zadnjih 100 letih smo identificirali 20 značilnih let (11 negativnih in 9 pozitivnih). Topli spomladanski meseci in poletni z več padavinami so najbolj ugodni za prirastek jelke. Z odzivnimi funkcijami smo pojasnili od 30 do 60% variabilnosti širin branik, kar pomeni, da metoda ne daje vedno zadovoljivih rezultatov. Z debelno analizo smo identificirali tudi do 11 izpadlih branik, ki smo jih s pomočjo regionalne kronologije postavili v čas. Negativni vpliv gospodarjenja se kaže v stalnem zniževanju lesne zaloge in s tem povezanim upadanjem širine branike. Lesna zaloga pod 450 m3/ha ne zagotavlja več ugodne sestojne klime za jelko. Poseki visoke jakosti povzročijo pri jelki stres, na katerega se odzove z upadom prirastka. Po nekaj letih se, pri ne prehudem posegu, prirastek povrne na nivopred posegom. Delež kasnega lesa z višino debla upada, vendar lahko to zakonitost modificira sekundarna krošnja. Prirastna ritmika odziva juvenilnegain adultnega lesa je primerljiva.Type of material - dissertation ; adult, seriousPublication and manufacture - Ljubljana : [T. Levanič], 1996Language - slovenianCOBISS.SI-ID - 66185
Author
Levanič, Tom
Other authors
Torelli, Niko |
Kotar, Marijan |
Eckstein, Dieter |
Čufar, Katarina
Topics
gozdovi |
Slovenija |
dinarsko fitogeografsko območje |
propadanje gozdov |
jelka |
dendrokronologija |
ekologija |
disertacije |
disertacije
Library/institution |
City | Acronym | For loan | Other holdings |
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Slovenian Forestry Institute, Forestry Library, Ljubljana | Ljubljana | GIS |
outside loan 2 cop.
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BF, Central Biotechnical Library, Ljubljana | Ljubljana | BFCBK |
outside loan 1 cop.
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BF, Department of Wood Science and Technology, Lj. | Ljubljana | BFLES |
reading room 2 cop.
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National and University Library, Ljubljana | Ljubljana | NUK |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
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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Levanič, Tom | 11595 |
Torelli, Niko | 01641 |
Kotar, Marijan | 05845 |
Eckstein, Dieter | |
Čufar, Katarina | 02937 |
Source: Personal bibliographies
and: SICRIS
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