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Arboristična ocena drevesnih naravnih vrednot na območju novomeške območne enote Zavoda Republike Slovenije za varstvo narave
Erjavec, Tilen (Author), Oven, Primož (Mentor) More about this mentor... This link opens in a new window

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Abstract
Cilj magistrske naloge je bila arboristična analiza drevesnih naravnih vrednot v novomeški območni enoti ZRSVN, z namenom preverjanja, ali drevesne naravne vrednote v trenutnem stanju ogrožajo okoliško infrastrukturo in ljudi. Analiziranih je bilo 41 naravnih vrednot oz. 48 posameznih dreves v 11 občinah, v mesecu maju leta 2018. Prevladujoča drevesna vrsta analiziranih dreves po številčnosti je bila navadna lipa (Tilia platyphyllos Scop.) (67 %), sledi ji hrast graden (Quercus petraea (Matt.) Liebl.) (7%), hrast dob (Quercus robur L.) (4 %), beli gaber (Carpinus betulus L.) (4 %), navadna hruška (Pyrus communis L.) (4 %) in druge. Povprečna višina dreves znaša 21,3 m, povprečni obseg 469 cm in povprečni prsni premer 149,3 cm. Rezultati kažejo, da so drevesa v neugodnem oz. slabem zdravstvenem stanju. 52 % dreves ima omejeno rastišče, 18 % dreves je imelo deblo poraščeno z mahom, 11 % dreves je imelo na deblu bule oz. mehanske poškodbe ali pa je bilo žlebato. Deblo brez posebnosti je imelo le eno drevo. 29 % dreves je imelo v krošnjah mehanske poškodbe, 28 % jih je imelo v krošnjah suhe veje in 17 % dreves je imelo asimetrično krošnjo. Na vseh dreves je bila v vsaj enem delu drevesa prisotna mehanska poškodba. Ugotovljeno je bilo, da drevesa zaradi svojega slabega zdravstvenega stanja ogrožajo okoliške objekte kot tudi ljudi. Izpostavljeno je bilo 5 dreves, ki so v kritičnem zdravstvenem stanju in so potrebna takojšnega ukrepanja. Posameznim drevesom smo po potrebi predlagali arboristični ukrep skladno z evropskimi navodili za obžagovanje dreves. Z arborističnimi ukrepi bi se zdravstveno stanje dreves dalo bistveno izboljšati, hkrati pa bi zmanjšali stopnjo nevarnosti, ki jo ta drevesa predstavljajo za infrastrukuro in ljudi.

Language:Slovenian
Keywords:arboristika/naravna vrednota/stanje drevesa/mehanska poškodba
Work type:Master's thesis/paper (mb22)
Organization:BF - Biotechnical Faculty
Year:2018
COBISS.SI-ID:5293990 Link is opened in a new window
Views:451
Downloads:145
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Secondary language

Language:English
Title:Arboricultural assessment of natural value trees in the Novo mesto regional unit of Institute of the Republic of Slovenia for nature conservation
Abstract:
The goal of this masters thesis was to make an arboricultural assessment of natural value trees in the Novo mesto IRSNC regional unit, with the purpose of finding out if the natural value trees in their current condition pose any kind of safety threat to surrounding infrastucutre and human lives. In total 41 natural values or 48 individual trees were examined in 11 municipalities in may 2018. The most common assessed tree species was the largeleaved lime (Tilia platyphyllos Scop.) (67 %), followed by cornish oak (Quercus petraea (Matt.) Liebl.) (7 %), european oak (Quercus robur L.) (4 %), European cornbeam (Carpinus betulus L.) (4 %), European pear (Pyrus communis L.) (4 %) and others. The average tree height measured was 21,3 m, the average circumference 469 cm and the average breast height diameter 149,3 cm. The results show that the trees are in bad condition. 52 % of the trees have a limited growing site. 18 % of trees had its trunk covered in moss and 11 % of trees had either growths or mechanical wounds on the trunk or their trunk was vertically ribbed. Only one tree had zero wounds or special features on the trunk. 29 % of the analyzed trees had mechanical wounds in the tree crown, 28 % had dead branches in the tree crown and 17 % had an asymmetrical tree crown. Of all the analyzed trees we detected atleast one mechanical wound, in at least one part of the tree. The results show that because of their bad condition, the trees pose a significant threat to surrounding infrastrucure. 5 trees were observed to be in critical condition and require immediate attention. Each Individual tree was also given a recommended arboricultural course of action if needed, based on the European tree pruning guide. With proper arboricultural procedures, the health condition of the trees could be greatly improved, which would in turn also greatly reduce the threat that they pose to surrounding infrastrucure and also human lives.

Keywords:Arboriculture/natural value/tree condition/mechanical injury

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