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  • Usporedna analiza utjecaja ...
    Dukić, Vojislav; Bilić, Srđan; Kazimirović, Marko; Petrović, Danijela; Stajić, Branko; Mirković, Miroslav

    Šumarski list, 08/2022, Letnik: 146, Številka: 7-8
    Journal Article, Paper

    In central Bosnia and Herzegovina, in the Zavidovići-Teslić area, the study of the radial growth of Austrian and Scots pine (autochthonous pine species) trees was conducted using the dendrochronological method in order to identify the differences between the species in terms of the influence of climatic variables on the tree ring formation. Trees were sampled in five experimental areas or five sites. The first site had a Scots pine stand, while the second had an Austrian pine stand, and the other three sites had mixed stands of Scots and Austrian pine. Cross-dating was conducted using visual on-screen techniques of CDendro software and statistical methods using Cofecha software. The tree ring series were standardized using the Arstan program and cubic smoothing spline. It produced Scots pine regional chronology, 145 years long (1870-2014), and Austrian pine regional chronology, 180 years long (1835-2014). Correlation analysis of the relationship between the index of tree-ring width and precipitation and temperature in the characteristic periods of the year showed a negative effect of temperature (except in winter months) and a positive effect of precipitation on the tree ring formation. The statistically significant dependence of the tree-ring width index on the SPEI indices indicates a significant impact of moisture deficiency on the tree ring formation in the period from June to August (r = 0.33 in June, r = 0.45 in July and r = 0.47 in August) for Scots pine and in the period from June to September (r = 0.36 in June, r = 0.43 in July, r = 0.47 in August and r = 0.30 in September) for Austrian pine. The analysis of the relationship between climatic parameters and the chronologies of Scots and Austrian pine shows similar relationships between radial growth and climate but the influence of climate is somewhat more pronounced in Austrian pine. In the study area, the radial growth of both tree species is significantly determined by climate conditions. In other words, the chronology of these species has a good climatic signal, especially the drought signal in the summer months. U Zavidovićko - Teslićkom području, u središnjoj Bosni i Hercegovini, dendrokronološkom metodom je proučavan radijalni rast stabala crnog i bijelog bora, autohtonih vrsta u pomatranom području. Cilj je bio identifikacija razlika između spomenutih vrsta glede utjecaja klimatskih čimbenika. Uzorci su uzeti iz stabala s pet lokaliteta. Na prvom lokalitetu je sastojina bijelog bora, na drugom crnog bora, a na ostala tri lokaliteta su mješovite sastojine. Standardizacija serija širina godova (radijalnih prirasta) obavljena je primjenom Arstan programa. Dobivena je regionalna kronologija bijeloga bora dužine 145 godina (od 1870. do 2014.) i regionalna kronologija crnoga bora dužine 180 godina (od 1835. do 2014.). Ispitivanje zavisnosti između indeksa širine goda i oborina odnosno temperature u pojedinim karakterističnim periodima godine, pokazalo je negativan utjecaj temperature (osim u zimskim mjesecima) na formiranje goda i pozitivan utjecaj oborina. Statistički značajna zavisnost indeksa širine goda od SPEI indeksa ukazuje na značajan utjecaj nedostatka vlage u periodu lipanj – kolovoz (r = 0,33 u lipnju, r = 0,45 u srpnju i r = 0,47 u kolovozu) za bijeli bor i periodu lipanj - rujan (r = 0,36 u lipnju, r = 0,43 u srpanju, r = 0,47 u kolovozu i r = 0,30 u rujnu) za crni bor na formiranje godova. Analiza odnosa klimatskih parametara i formiranih kronologija bijeloga i crnoga bora pokazuje slične odnose između širine goda i klime, ali je utjecaj klimatskih čimbenika nešto više izražen kod crnog bora, kojemu više odgovaraju uvjeti staništa na promatranom području. U promatranom području radijalni prirast stabala obje vrste drveća značajno je uvjetovan klimatskim čimbenicima, odnosno kronologije navedenih vrsta imaju dobar klimatski signal, a posebno signal suše u ljetnim mjesecima.