Vpliv prahu na optične lastnosti listov pri bukvi

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Jezik:	Slovenski jezik
Leto izida:	2013
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[Ž. Grobelšek]
UDK:	581.5(043.2)
COBISS:	9654089
Št. ogledov:	1048
Št. prenosov:	390
Ocena:	0 (0 glasov)
Metapodatki:

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Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	ǂThe ǂinfluence of dust on optical properties of beech leaves
Sekundarni povzetek:	We studied the influence of dust on optical properties of beech tree leaves (Fagus sylvatica L.). We were assessing the influence of dust particles at two locations in the vicinity of a quarry and compared it with the reference location. We measured the anatomical characteristics of the leaf (thickness, thickness of the cuticle, and of the lower and upper epidermis, and the thickness of the spongy and palisade tissue, specific leaf surface, the number and size of leaf stomata, the structure of the leaf). We also performed biochemical analyses, comparing the content of pigments (chlorophyll, carotenoids and anthocyanians) and UV-absorbing substances (UV-A and UV-B), and measured the reflection spectra of leaves covered with dust particles and of leaves where the dust particles were removed. We wanted to estimate the influence of dust particles on measured parameters and the relation of properties of leaves are related to the presence of dust. We also wanted to point out how dust cover affects reflectance spectra. The results showed that differences occur mainly in certain anatomical features, pigment content and reflectance, while in the amount of UV-absorbing substances the impact of dust was not detected. Redundancy analysis revealed that the most of variability of spectra was explained by structure of the leaf (the thickness of the palisade tissue and the specific leaf surface), as well as the amount of dust.
Sekundarne ključne besede:	botany;botanika;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. Ljubljana, Pedagoška fak., Biotehniška fak., Fak. za kemijo in kemijsko tehnologijo, Naravoslovnotehniška fak.
Strani:	XI, 50 f., [2] f. pril.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	The influence of dust on optical properties of beech leaves
Ključne besede (ePrints):	optične lastnosti
Ključne besede (ePrints, sekundarni jezik):	optical properties
Povzetek (ePrints):	Proučevali smo vpliv prahu na optične lastnosti listov bukve (Fagus sylvatica L.). Vpliv prašnih delcev smo ugotavljali na dveh lokacijah ob kamnolomu in ga primerjali z referenčno lokacijo. Primerjali smo anatomske značilnosti lista (debelino lista, debelino kutikule, debelino spodnje in zgornje povrhnjice ter debelino gobastega in stebričastega tkiva, specifično listno površino in število ter velikost listnih rež). Opravili smo tudi biokemijske analize in primerjali vsebnost barvil (klorofili, karotenoidi in antociani), UV-absorbirajočih snovi (UV-A- in UV-B-absorbirajoče snovi) ter izmerili odbojne spektre listov s prahom in tistih, katerim smo prah odstranili. Zanimalo nas je, kako se s količino prahu spreminjajo merjeni parametri ter kako so med seboj povezani prisotnost prahu, lastnosti listov in odbojni spektri. Rezultati so pokazali, da se razlike pojavljajo predvsem v določenih anatomskih značilnostih, vsebnosti barvil in odbojnosti, medtem ko pri UV-absorbirajočih snoveh vpliva prahu ni zaznati. Ugotovili smo tudi, da na odbojnost v največji meri vpliva struktura lista (debelina stebričastega tkiva in specifična listna površina) ter količina prahu.
Povzetek (ePrints, sekundarni jezik):	We studied the influence of dust on optical properties of beech tree leaves (Fagus sylvatica L.). We were assessing the influence of dust particles at two locations in the vicinity of a quarry and compared it with the reference location. We measured the anatomical characteristics of the leaf (thickness, thickness of the cuticle, and of the lower and upper epidermis, and the thickness of the spongy and palisade tissue, specific leaf surface, the number and size of leaf stomata, the structure of the leaf). We also performed biochemical analyses, comparing the content of pigments (chlorophyll, carotenoids and anthocyanians) and UV-absorbing substances (UV-A and UV-B), and measured the reflection spectra of leaves covered with dust particles and of leaves where the dust particles were removed. We wanted to estimate the influence of dust particles on measured parameters and the relation of properties of leaves are related to the presence of dust. We also wanted to point out how dust cover affects reflectance spectra. The results showed that differences occur mainly in certain anatomical features, pigment content and reflectance, while in the amount of UV-absorbing substances the impact of dust was not detected. Redundancy analysis revealed that the most of variability of spectra was explained by structure of the leaf (the thickness of the palisade tissue and the specific leaf surface), as well as the amount of dust.
Ključne besede (ePrints, sekundarni jezik):	optical properties
ID:	8311431