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Query: "keywords" (Fagus sylvatica) .

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31.
Reliefne značilnosti tal in objedanje mladja s strani velikih rastlinojedih parkljarjev v jelovo-bukovem gozdu
Dušan Roženbergar, Robert Klevišar, Jurij Diaci, 2019, original scientific article

Abstract: Veliki rastlinojedi parkljarji (VRP) različno vplivajo na razvoj gozdnih ekosistemov. Eden izmed najbolj negativnih vplivov, ki ga imajo na dolgoročni razvoj gozdov, je posledica kroničnega čezmernega objedanja mladja. Namen raziskave je bil s pomočjo analize objedanja v delu dinarskih jelovo-bukovih gozdov ugotoviti, kakšen vpliv na intenzivnost objedanja imajo habitatne značilnosti prostora in relief. Povprečna objedenost mladja je bila 70 %, analiza višinske strukture mladja pa je pokazala, da ni prehajanja gorskega javorja in jelke v zgornje višinske plasti. Potrdili smo vpliv stopnje kritja za VRP in reliefa na stopnjo objedenosti. Največ poškodb smo zabeležili na grebenih in v vrtačah. Glede na rezultate naših analiz v prihodnje v jelovobukovih gozdovih na območju naše raziskave ne bo mogoče zagotoviti primesi jelke in gorskega javorja v zgornjih sestojnih položajih. Če želimo v tem delu Slovenije vzgojiti pestre gozdove, bo poleg gozdno-gojitvenega ukrepanja nujno nadaljevanje intenzivnega gospodarjenja z VRP v smislu zmanjševanja njihovih gostot.
Keywords: objedanje, gojenje gozdov, veliki rastlinojedi parkljarji, relief, pomlajevanje, Abies alba, Fagus sylvatica, Acer pseudoplatanus
Published in DiRROS: 08.07.2019; Views: 6948; Downloads: 2899
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Poročilo o preskusu št.: LVG 2018-174 : opis vzorca: Fagus sylvatica, listi : namen testiranja: sum na: Pseudodidymella fagi
Nikica Ogris, 2018, expertise, arbitration decision

Keywords: varstvo gozdov, navadna bukev, Fagus sylvatica, Pseudodidymella fagi, listi
Published in DiRROS: 05.06.2019; Views: 2599; Downloads: 150
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Poročilo o preskusu št.: LVG 2018-173 : opis vzorca: Fagus sylvatica, listi : namen testiranja: sum na: Pseudodidymella fagi
Nikica Ogris, 2018, expertise, arbitration decision

Keywords: varstvo gozdov, navadna bukev, Fagus sylvatica, Pseudodidymella fagi, listi
Published in DiRROS: 05.06.2019; Views: 2127; Downloads: 126
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Poročilo o preskusu št.: LVG 2018-171 : opis vzorca: Fagus sylvatica, listi : namen testiranja: sum na: Pseudodidymella fagi
Nikica Ogris, 2018, expertise, arbitration decision

Keywords: varstvo gozdov, navadna bukev, Fagus sylvatica, Pseudodidymella fagi, listi
Published in DiRROS: 05.06.2019; Views: 1875; Downloads: 122
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Growth response of different tree species (oaks, beech and pine) from SE Europe to precipitation over time
Dejan Stojanović, Tom Levanič, Bratislav Matović, Stefan Stjepanović, Saša Orlović, original scientific article

Abstract: Changing climatic conditions can have various consequences for forest ecosystems, from increasing frequencies of forest fires, ice and windstorm events to pathogen outbreaks and mass mortalities. The Standardized Precipitation Index (SPI) was chosen for the evaluation of drought impact on the radial growth of trees after extensive preliminary testing of various calculated monthly climate parameters from the CARPATCLIM database. SPI was calculated for periods between 3 and 36 months for different sites (lowland and mountainous parts of Serbia, Southeast Europe), from which Quercus robur, Q. cerris, Fagus sylvatica and Pinus sylvestris samples were acquired. Bootstrapped Pearson%s correlations between SPI monthly indices and radial growth of tree species were calculated. We found that 12-month SPI for summer months may be a good predictor of positive and negative growth of different species at different sites. The strongest positive correlations for five of six tree-ring width chronologies were between 12-month June and 14-month September SPI, which implies that high growth rates can be expected when the autumn of the previous year, and winter, spring and summer of the current year, are well supplied with precipitation, and vice versa (low precipitation in given period/low growth rates).
Keywords: standardized precipitation index, SPI, climate change, tree mortality, Quercus sp., Fagus sylvatica, Pinus sylvestris
Published in DiRROS: 18.04.2018; Views: 2919; Downloads: 1670
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