Digital repository of Slovenian research organisations

Search the repository
A+ | A- | Help | SLO | ENG

Query: search in
search in
search in
search in
Research data

Options:
  Reset

Query: "author" (Polona Hafner) .

1 - 10 / 10
First pagePrevious page1Next pageLast page
1.
2.
Anatomical characteristics and hydrologic signals in tree-rings of oaks (Quercus robur L.)
Jožica Gričar, Martin De Luis, Polona Hafner, Tom Levanič, 2013

DiRROS - Published: 12.07.2017; Views: 922; Downloads: 258
URL Fulltext (0,00 KB)
This document has many files! More...

3.
Vpliv klime na maksimalno gostoto kasnega lesa v branikah smreke (Picea abies (L.) Karst.) na dveh rastiščih v Sloveniji
Polona Hafner, Tom Levanič, 2008

Abstract: Navadna smreka (Picea abies (L.) Karst.) je zaradi svoje razširjenosti, zgradbe lesa in dolge življenjske dobe razmeroma pogost objekt dendrokronoloških raziskav. Doslej objavljene slovenske smrekove kronologije so bile sestavljene na podlagi širin branik, prispevek pa predstavlja prve denzitokronologije v Sloveniji in opisuje metodo določanja maksimalne gostote kasnega lesa branike (MXD). Raziskava je potekala na dveh različnih smrekovih rastiščih - Pokljuki in Sorškem polju. Na obeh lokacijah smo v vzorec zajeli po 13 dreves. Rezultati, dobljeni na Sorškem polju, so pokazali višje vrednosti MXD in manjše število značilnih let. Analiza je pokazala tudi pozitivno korelacijo med MXD in temperaturami v avgustu in septembru.
Keywords: smreka, Picea abies, klima, gostota lesa, kasni les, denzitometrija
DiRROS - Published: 12.07.2017; Views: 901; Downloads: 80
URL Fulltext (0,00 KB)
This document has many files! More...

4.
Stable carbon isotopes in Norwey spruce (Picea abies (L.) Karst.) tree rings at two sites in Slovenia
Polona Hafner, Tom Levanič, 2009

Abstract: Stable isotopes in tree rings are an important tool in climate reconstruction and in studies of tree response on environmental factors in the past, similar like maximum latewood density, tree ring width and other tree ring parameters.In this article we present stable carbon isotopes physiology and the first two Slovenian d13C chronologies for Norway spruce (Picea abies (L.) Karst.) growing at two sites with different ecological conditions. Five trees were sampled at Pokljuka alpine site and three at Sorško polje lowland plantation. d13C values were compared with CRU TS 1.2 meteorological data-set,which provides information on climate in Europe for the 1901-2000 period at a 10ć spatial resolution. Results of correlation analysis for both sites revealed similar average d13C values, which are in strong negative correlation with amount of precipitation and positive correlation with temperatures in the growing period. Temporal stability of the correlation between precipitation and d13C values in July is significant for both sites, where as the stability of d13C - temperature relationship is significant only for the Sorško polje site.
DiRROS - Published: 12.07.2017; Views: 872; Downloads: 80
URL Fulltext (0,00 KB)
This document has many files! More...

5.
Začetek projekta ROSEWOOD
Jožica Gričar, Polona Hafner, 2018

Keywords: gozdarstvo, les, mednarodni projekti, Rosewood, gozdarji
DiRROS - Published: 16.04.2018; Views: 964; Downloads: 38
.pdf Fulltext (78,78 KB)

6.
7.
Razmišljajmo globalno, delujmo lokalno
Polona Hafner, Mitja Skudnik, 2019

Keywords: gospodarjenje z gozdom, trajnost, globalnost, lokalnost
DiRROS - Published: 08.08.2019; Views: 239; Downloads: 26
.pdf Fulltext (46,57 KB)

8.
Zaključek projekta FORESDA
Jožica Gričar, Polona Hafner, 2019

Keywords: gozdarstvo, projektno delo, bioekonomija, FORESDA
DiRROS - Published: 08.08.2019; Views: 259; Downloads: 14
.pdf Fulltext (123,01 KB)

9.
10.
Search done in 0 sec.
Back to top