Drivers of regeneration dynamics following salvage logging and different silvicultural treatments in windthrow areas in Slovenia

Gal Fidej (Avtor), Andrej Rozman (Avtor), Jurij Diaci (Avtor)

Povzetek

We studied regeneration dynamics in forests disturbed by three different windthrow events in 2008 in Slovenia to assess the success of natural regeneration vs planting and subsequent silvicultural treatments. Fifty-three plots with planted saplings of Norway spruce and sycamore maple and 50 plots with dominant naturally regenerated saplings were selected in a randomly stratified manner. Sapling characteristics (height, height increment, root collar diameter, free-to-grow score, browsing and micro-site) were assessed in 2012 and 2014. Herbs and seedling establishment were studied in two subplots within each plot. Average seedling density was 13,074 and 14,674 ha%1 four and six years after the windthrows, respectively. Seedlings were irregularly distributed, which suggests micro-site differences in regeneration dynamics. The results indicated lower seedling success on sites that were southerly exposed, farther from the forest edge and seed trees, on undisturbed micro-sites and at higher altitudes. On such sites planting was justified. While seedling density indicated a positive relation to herb coverage, sapling survival was negatively associated with it as well as with browsing. Initial sapling height was the strongest predictor of survival. Spruce saplings had the lowest mortality, while shade-tolerant silver fir and beech experienced high mortality. The study indicated a high density and species diversity of naturally regenerated seedlings within windthrow areas, which was reduced by planting, mowing of competing vegetation and protection measures favouring planted saplings. Recommendations for the improvement of silvicultural operations for post windthrow restoration are given.

Ključne besede

sanacije vetroloma;naravna obnova;saditev;ekspozicija;nadmorska višina;windthrow restoration;natural regeneration;planting;aspect;altitude;

Podatki

Jezik:	Angleški jezik
Leto izida:	2017
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL BF - Biotehniška fakulteta
UDK:	63023:63042(045)0111
COBISS:	4914598
ISSN:	0378-1127
Št. ogledov:	874
Št. prenosov:	831
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	sanacije vetroloma;naravna obnova;saditev;ekspozicija;nadmorska višina;
Vrsta dela (COBISS):	Delo ni kategorizirano
Strani:	str. 378-389
Zvezek:	ǂVol. ǂ409
Čas izdaje:	2017
DOI:	10.1016/j.foreco.2017.11.046
ID:	10915460