20.500.12556/DiRROS-6298
Vpliv vremenskih razmer na lesno-anatomske značilnosti pri puhastem hrastu s Podgorskega Krasa
Impact of weather conditions on wood-anatomical features in Pubescent Oak at Podgorski Kras
V okviru raziskave smo se osredotočili na vpliv vremenskih dejavnikov na lesno-anatomske značilnosti puhastega hrasta (Quercus pubescens Willd.), ki je ena od dominantnih domorodnih drevesnih vrst v slovenskem Submediteranu. V obdobju 2009%2014 smo raziskali povezave med različnimi lesno-anatomskimi parametri (končna širina branike, širina kasnega in ranega lesa ter premer, površina in število trahej ranega lesa) in vremenskimi dejavniki (padavine, temperatura in vsebnost vode v tleh). Zanimal nas je tudi potencial izbranih lesno-anatomskih parametrov ter komplementarnost oziroma enakovrednost le-teh za proučevanje podnebja na Podgorskem krasu. Preliminarni rezultati so pokazali, da so bili anatomski parametri povezani predvsem s temperaturo. Širina ranega lesa in površina trahej ranega lesa sta bili pozitivno povezani z maksimalno temperaturo, število trahej v ranem lesu in širina lesne branike pa pozitivno povezana s povprečno temperaturo v obdobju pred in na začetku kambijeve aktivnosti (januar%maj). To nakazuje, da vremenske razmere v navedenem obdobju pomembno vplivajo na hidravlične lastnosti ksilema. Pri širini kasnega lesa smo ugotovili največ povezav s temperaturo v poletnih mesecih, pri trahejah ranega lesa pa s temperaturo v obdobju januar%april. Vpliva padavin na razvoj ksilemske branike z našimi rezultati nismo potrdili. Ugotovili smo, da so širina kasnega lesa in značilnosti trahej ranega lesa primerni lesno-anatomski parametri, ki vsebujejo komplementarne informacije o vplivu vremenskih razmer na debelinsko rast puhastega hrasta. Poudariti je treba, da so bile naše analize opravljene v razmeroma kratkem časovnem obdobju in da bi bile za natančnejše rastno-podnebne zveze potrebne dodatne dolgoletne študije.
Our research focused on the influence of climatic factors on wood-anatomical features of pubescent oak (Quercus pubescens Willd.), which is one of the dominant native tree species in Slovenian sub-Mediterranean climate. In the period 2009%2014 we studied relationship between various wood-anatomical parameters (xylem ring width, early- and latewood widths, diameter, area and number of earlywood vessels) and climatic factors (precipitation, temperature and soil water content). In addition, we checked whether the studied wood-anatomical parameters contained complementarity or redundant climatic information in pubescent oak at Podgorski Kras. Preliminary results showed that studied parameters were mainly related to temperature. In period before and at the onset of cambial activity (i.e. January%May), earlywood width and earlywood vessel area were positively related to the maximum temperature, whereas number of earlywood vessels and xylem ring width were positively related to the mean temperature. This indicates that weather conditions in this period have a significant impact on hydraulic properties of xylem. For latewood width, we found significant correlation with temperature in summer months and for earlywood vessels with the temperature in period January%April. We could not confirm the impact of precipitation on xylem ring development. We concluded that latewood width and earlywood vessel characteristics are promising wood-anatomical parameters containing complementary information on the impact of weather conditions on radial growth of pubescent oak. However, it is necessary to emphasize that our analysis has been performed in a relatively short time period, therefore long-term data are needed for more reliable assessment of the applicability of the selected wood-anatomical parameters to dendroclimatological studies.
Quercus pubescens
kras
vreme
anatomija lesa
lesna branika
kasni les
rani les
traheja
Quercus pubescens
Karst
weather
wood anatomy
xylem ring
earlywood
latewood
vessel
true
false
false
Slovenski jezik
Angleški jezik
Delo ni kategorizirano
2017-03-06 18:20:19
2017-03-06 18:21:53
2022-08-12 10:15:16
0000-00-00 00:00:00
2016
0
0
str. 410-420
št. 10
Letn. 74
2016
0000-00-00
NiDoloceno
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
630*11:630*81(045)=163.6
0017-2723
4637094
3736834
Lavric&Gricar_GV_2016_stev_10_final-2.pdf
Lavric&Gricar_GV_2016_stev_10_final-2.pdf
1
8DADB3074C450798CC380FCB93A5C128
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20.500.12556/dirros/66fab97a-b593-4245-8358-a23bd401675b
https://dirros.openscience.si/Dokument.php?lang=slv&id=6454
Zveza gozdarskih društev Slovenije
Gozdarski vestnik
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