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Razširjenost in gospodarski pomen jesenov (Fraxinus sp.) v območni enoti Kranj : diplomsko delo - univerzitetni študij
Sever, Anže (Author), Brus, Robert (Mentor) More about this mentor... This link opens in a new window

URLURL - Presentation file, Visit http://www.digitalna-knjiznica.bf.uni-lj.si/dn_sever_anze.pdf New window

Abstract
Najbolj razširjena vrsta jesena v OE Kranj je veliki jesen. Manj zastopan je mali jesen, medtem ko prisotnost poljskega jesena v raziskavi ni bila potrjena. Veliki jesen največje deleže dosega v odsekih, ki se nahajajo ob večjih rekah in po nižinah. Raste na vlažnih in svežih rastiščih, na silikatnih in karbonatnih podlagah. Mali jesen pa je izrazito vrsta suhih, južnejših rastišč na karbonatni podlagi. Nabrani primerki so pokazali precejšno variabilnost listov pri vseh vrstah. Zato je pri določanju jesenov, predvsem to velja za veliki in poljski jesen, potrebno upoštevati več znakov. Zaradi tega so za določevanje jesenov primernejši določevalni ključi, ki upoštevajo večje število znakov. Veliki jesen je hitro rastoča drevesna vrsta,pri kateri lahko s primernim in pravočasnim gojenjem pridelamo visoko kakovosten les. Zato so v diplomski nalogi podane nekatere smernice za gojenjevelikega jesena. Mali jesen pa je pomembna vrsta varovalnih gozdov.

Language:Slovenian
Keywords:veliki jesen, Fraxinus excelsior L., mali jesen, Fraxinus ornus L., poljski jesen, Fraxinus angustifolia Vahl., območna enota Kranj, razširjenost, gospodarski pomen, določevalni ključi, gojenje gozdov
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2005
Publisher:[A. Sever]
Number of pages:61 str.
Place:Ljubljana
UDC:630
COBISS.SI-ID:1565350 Link is opened in a new window
Views:605
Downloads:153
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Secondary language

Language:Unknown
Abstract:
Common ash is the most widely spread ash species in Regional unit Kranj. Flowering ash is less present, while the presence of narrow-leaved ash was notconfirmed in the research. Common ash reaches the highest shares in compartments located near bigger rivers and on lowlands. It grows on moist andfresh sites, on silicate and carbonate grounds. Flowering ash is distinctlya species of dry, southern sites on carbonate grounds. Collected speciments showed considerable variability of leaves by all three species. Forthis reason by ash determination, especially by common and narrow-leaved ash, the consideration of bigger number of signs is necessary. That is why thedetermination keys, which consider a bigger number of signs, are more appropriate for determination of ash species. Common ash is a fast growing tree species, which can with appropriate and timely silviculture grow high quality wood. Therefore the graduation thesis includes some guidelines for silviculture of common ash. Flowering ash is an important tree species of protective forests.


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