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Vpliv suše leta 2003 na kamijevo aktivnost pri smreki (Picea abies Karst.) na Pokljuki in Sorškem polju = Effect of drought in the year 2003 on cambial activity in Norway spruce (Picea abies Karst.) in the Pokljuka and at Sorško poljeGričar, Jožica, gozdarka ; Oven, Primož ; Levanič, TomRaziskali smo sezonsko dinamiko nastanka lesa pri smreki (Picea abies Karst.) na Pokljuki (Pok - 1250 m n.m.) in Sorškem polju (SorP - 350 m n.m.) v letu 2003. V ta namen smo na obeh rastiščih ... izbrali po pet dreves in v tedenskih intervalih izvajali eksperiment pining. Ksilemski prirastek, nastal do trenutka poškodbe, smo določili na mikroskopskih preparatih prečnih prerezov. Po vsej Evropi so leta 2003 zabeležili nadpovprečno vroče in suho poletje. V tem letu se je kambijeva aktivnost pri smrekah na SorP začela konec aprila, približno dva tedna prej kot na Pok. Maksimalno celično produkcijo smo na SorPzabeležili tretji teden maja, na Pok pa v sredini junija. Delitve v kambiju so se na SorP zaradi visokih temperatur in suše nehale konec julija, na Pok pa v sredini avgusta. V povprečju je na SorP nastalo 0,41, na Pok pa 0,60 celice na dan, kar kaže na večjo stopnjo celičnih delitev na slednjem rastišču. Po koncu rastne sezone 2003 je bila ksilemska branika na SorP v povprečju široka 36 (1,1 mm), na Pok pa 46 celic (1,5 mm). Dolgoročne meritve širin ksilemskih branik so pokazale večjo variabilnost priraščanja pri smrekahna SorP v primerjavi s Pokljuko, kar povezujemo z večjo občutljivostjo rastišča na sušo. Nadpovprečno visoke temperature in podpovprečna količina padavin leta 2003 so pozitivno vplivale na rast smrek na hladnejših rastiščih na Pok, saj so bile ksilemske branike širše v primerjavi z drugimi leti, medtem ko je bilo na sušnejših in toplejših rastiščih SorP ravno obrnjeno.Source: Podnebne spremembe : vpliv na gozd in gozdarstvo = Climate changes : impact on forest and forestry (Str. 177-189)Type of material - conference contribution ; adult, seriousPublish date - 2007Language - slovenianCOBISS.SI-ID - 1862054
Author
Gričar, Jožica, gozdarka |
Oven, Primož |
Levanič, Tom
Topics
navadna smreka |
smreka |
Picea abies |
les |
ksilogeneza |
pining |
metoda pinning |
dendroklimatologija |
Norwey spruce |
wood |
xylogenesis |
pinning |
pinning method |
dendroclimatology
Shelf entry
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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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Gričar, Jožica, gozdarka | 22609 |
Oven, Primož | 11223 |
Levanič, Tom | 11595 |
Source: Personal bibliographies
and: SICRIS
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