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Dinamika zaraščanja planinskih pašnikov na Belski planini in Rebru : diplomsko delo (visokošolski strokovni študij)
Klinar, Klemen (Author), Hladnik, David (Mentor) More about this mentor... This link opens in a new window

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Abstract
Planinski pašniki so del tradicionalne kmetijske rabe prostora v alpskem svetu, ki se zaradi zmanjševanja števila tivine na kmetijah zaraščajo. Digitalni ortofoto posnetki ločljivosti 0,5 m iz let 1995 in 2006 so bili s pomočjo GIS programa Feature Analyst analizirani s postopkom objektne klasifikacije. Na podlagi spektralnih odbojev različnih tipov rabe tal je klasifikacija razločila pašnik od ostalih površin. S primerjavo kart rabe tal v obravnavanih letih smo ugotovili dinamiko zaraščanja pašnikov in drugih prostorskih procesov na Belski planini in Rebru. Ugotovitve katejo, da lahko z uporabljeno metodologijo brez dolgotrajnega vizualnega razmejevanja rabe tal zanesljivo določimo spremembe na ravni najmanjših površin, to je posameznih grmov, večjih od 4 m2. Tako so bili zaznani procesi zaraščanja v obdobju 11 let ter na drugi strani identificirane krčitve grmovnega in gozdnega rastja, ki jih izvajajo kmetje na planinah. Na Belski planini, ki leti na nadmorski višini 1500-1900 m in je prevladujoča zaraščajoča vrsta rušje, je bilo na 60,26 ha pašnih površin leta 1995 v 11-letnem obdobju ugotovljenih 11,81 ha zaraščenih in 5,99 ha izkrčenih površin. Na Rebru, ki leti na nadmorski višini 750-950 m, kjer v zaraščanju prevladujejo termofilne grmovne vrste in smreka, je bilo na površini 18,88 ha pašnikov zaraščenih 5,26 ha in izkrčenih 1,52 ha.

Language:Slovenian
Keywords:planine, pašniki, zaraščanje, ruševje, objektna klasifikacija, ortofoto, GIS
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2010
Publisher:[K. Klinar]
Number of pages:X, 75 f.
Place:Ljubljana
UDC:630*91(043.2)=163.6
COBISS.SI-ID:3052966 This link opens in a new window
Views:1025
Downloads:298
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Secondary language

Language:Unknown
Abstract:
Alpine pastures are part of the traditional agricultural use of land in the Alpine region but they are becoming overgrown due to the reduced number of livestock on farms. Digital ortophotos from the years 1995 and 2006 with a 0,5m pixel resolution were analysed by feature extraction with Feature Analyst, a GIS programme. Pastures were distinguished from other surfaces on the basis of the various types of spectral reflectance of different types of land use. By comparing land use maps for the analyzed period the dynamics of pasture overgrowth and other spatial processes in Belska planina and Reber were established. The findings show that changes at the level of the smallest surfaces, i.e. individual shrubs larger than 4 m2, can be reliably identified with the methodology used without long-term visual land use delineation. The processes of overgrowth over a period of 11 years were observed and, on the other hand, the clearing of shrub and arboreal vegetation performed by alpine farmers was identified. In Belska planina, located at an altitude of 1500-1900m, where dwarf pine stands are the prevailing overgrown type, 11,81 ha of overgrown and 5,99 ha of cleared surfaces were observed on 60,26 ha of pastures in 1995 for an 11-year period. In Reber, located at an altitude of 750-950 m, where thermophilic species of shrub and spruce are the prevailing overgrown type, 18,88 ha of overgrown and 1,52 ha of cleared surfaces were observed on 18.88 ha of pastures.


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