Uspešnost saditve v gozdnogospodarski enoti Mokronog v letih 1996-2015

Vavtar, Niko (author), Diaci, Jurij (mentor)

V Sloveniji je vsako leto posajenih vse manj sadik, obenem je saditev v porastu v letih po naravnih ujmah, ki so vse pogostejše. V delu je obravnavana uspešnost saditve v Gozdnogospodarski enoti Mokronog v letih od 1996 do 2015. Izmed 175 nasadov v enoti jih je bilo 40 (20 s površino manjšo ali enako 0,1 ha in 20 s površino večjo od 0,1 ha) naključno izbranih v vzorec in analiziranih. Mnenja revirnih gozdarjev so bila zbrana z vodenim intervjujem. Na obravnavanem območju so največ sadili navadno smreko, sledili so ji gorski javor, veliki jesen in divja češnja. Uspeh saditve je bil največji pri rdečem boru, sledili sta mu navadna smreka in divja češnja. Sušne vremenske razmere, vpliv divjadi, zastrtost in ujme so bili glavni vzroki mortalitete sadik. Preživetje sadik je izboljšala redna nega. Delež živih osebkov v mlajših nasadih je znašal 44 %, v starejših pa 27 %, kar je z upoštevanjem spontano doseljenega mladja in gozdnogojitvenih ciljev zadovoljivo. Revirni gozdarji ocenjujejo, da so potenciali za naravno obnovo precejšnji. Izbor drevesnih vrst, primernih za saditev, je zahteven. Upoštevati je potrebno rastiščno primernost, lokalne ekološke razmere, podnebne spremembe in druge dejavnike ter se izogibati enovrstnim sestojem, poskrbeti za čim večjo vrstno pestrost gozdov in redno izvajati nego mladega gozda.

• Language: Slovenian
• Keywords: obnova gozda, saditev, umetna obnova
• Work type: Bachelor thesis/paper
• Organization: BF - Biotechnical Faculty
• Year: 2017
• PID: 20.500.12556/RUL-94252
• Publication date in RUL: 21.07.2017

Secondary language

• Language: English
• Title: Planting success in Forest Management Unit Mokronog in years 1996-2015

Abstract

Overall, the number of yearly planted seedlings in Slovenia is decreasing, while planting is increasing in years following natural disturbances, which occur more and more often. The paper deals with the planting success in Forest Management Unit Mokronog in years 1996–2015. Forty out of 175 plantations (20 with an area smaller or equal to 0.1 ha and 20 with an area larger than 0.1 ha) were randomly selected with the sample and analyzed. Opinions of local foresters were collected by guided interviews. The largest area was planted with spruce, followed by sycamore maple, European ash and wild cherry. Drought, game impact, excessive canopy coverage and natural disturbances were the main causes of seedling mortality. Seedling survival was improved by regular tending. The proportion of survived seedlings was 44% and 27% within younger and older plantations, respectively. This seems acceptable considering spontaneously developed natural regeneration and silvicultural goals. Foresters estimate the potential for the natural regeneration as significant. The selection of the tree species suitable for plantations is demanding. It is necessary to: take into account site suitability, local ecological conditions, climate change and other factors, avoid monocultures to ensure species diversity and stand stability and to carry out tending on a regularly.

• Keywords: forest regeneration, planting, artificial regeneration