Presoja varovalnega učinka gozda pred snežnimi plazovi na delu ceste na Vršič

diplomsko delo - univerzitetni študij

Simon Pintar (Author), Jurij Diaci (Mentor)

Abstract

Cesto na Vršič ogrožajo snežni plazovi, gozdovi nad njo pa opravljajo zaščitnoin varovalno funkcijo pred njimi. Nad delom ceste v bližini ruskega križa smo analizirali potencialno ogroženost ceste in gozda nad njo pred snežnimi plazovi, opravili presojo zaščitne funkcije gozda pred snežnimi plazovi ter določili smernice in ukrepe za nadaljnji razvoj gozda in krepitev njegovega varovalnega učinka. Ovrednotili smo tudi aktualno prostorsko razporejenost varovalne in zaščitne funkcije znotraj objekta raziskave. Na objekt raziskave smo postavili mrežo 21-ih raziskovalnih ploskev na katerih smo popisali vsa živa drevesa s prsnim premerom ?10 cm. Po modificirani metodiNaiS (Frehner in sod., 2005) smo izločili in opisali sestoje ter primerjali njihovo dejansko stanje s ciljnim, ki zagotavlja zaščito pred snežnimi plazovi. Glede na naklon in pokritost z gozdnim rastjem smo naredili tudi karto, ki kaže najbolj ogrožena območja pred snežnimi plazovi. Delež bukve v lesni zalogi je znašal 55 %, delež smreke 32 %, delež macesna pa 11 %.Ugotovili smo, da noben sestoj ne zagotavlja popolne in trajne zaščitne funkcije. Največji problem predstavlja pomlajevanje in zagotavljanje raznomerne strukture sestojev. V dveh sestojih so potrebni tudi tehnični ukrepi. Najpomembnejše smernice za nadaljnji razvoj gozda so: pospeševanje raznomerne in raznodobne strukture, zagotavljanje pomladka, čim večje število nosilcev stabilnosti, zagotavljanje dobre vitalnosti dreves, zagotavljanje zadostne gostote dreves, delež smreke v lesni zalogi naj znaša do 30 %, delež bukve naj ne bo manjši kot 60 %.

Keywords

varovalni gozdovi;varovalna funkcija;zaščitna funkcija;varovalni učinek;snežni plazovi;naravne nevarnosti;gospodarjenje z varovalnimi gozdovi;Vršič;NaiS;

Data

Language:	Slovenian
Year of publishing:	2012
Source:	Bled
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[S. Pintar]
UDC:	630*26(497.4 Vršič)=163.6
COBISS:	3520166
Views:	947
Downloads:	321
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Unknown
Secondary title:	Assesment of protective effect of forest against snow avalanches on the section of the Vršič road
Secondary abstract:	The Vršič road is threatened by snow avalanches, and the forests above it are performing a protective function against them. We analysed potential hazard tothe road and forests above it from snow avalanches, and evaluated the protective function of the forest. We defined guidelines and measures for further development of the forests to enhance its protective effect, and evaluated the actual spatial distribution of formalized protective function area of the forest within management plans. We set a network of 21 sample plots on the research area and measured all living trees with DBH ? 10 cm. Using the modified method NaiS (Frehner et al., 2005) we defined the stand boundaries, analysed them and compared the actual state of the stands to the target state. With regard to the slope and forest cover we made a map of the areas that are most prone to formation of snow avalanches. The share of beech in growing stock was 55 %, the share of spruce 32 % and the share of larch 11 %. We concluded that none of the stands provided complete and permanent protective function against snow avalanches. The largest problems are poor regeneration and ensuring uneven-aged stand structure. Technical measures are needed in two stands. The most important guidelines for the future developmentof the forest are: favouring heterogeneous stand structure and regeneration, safeguarding good stability and vitality of the trees, ensuring sufficient density of the trees, the share of the spruce in growing stock should not exceed 30 %, while the share of the beech should not be less than 60 %.
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univerza v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo in obnovljive gozdne vire
Pages:	IX, 74 str.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;silviculture;gojenje gozdov;silvikultura;
ID:	57043