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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F14%3A10281638%21RIV15-MSM-11310___
rdf:type
skos:Concept n18:Vysledek
rdfs:seeAlso
http://dx.doi.org/10.1016/j.jag.2013.09.009
dcterms:description
Forests play an important role in regulation of the global climate; moreover, they provide human beings with a whole range of ecosystem services. Forest health and ecosystem functioning have been influenced by anthropogenic activities and their consequences, such as air pollution, surface mining, heavy metal contamination, and other biotic and abiotic stress factors, which had an especially serious effect on central Europe. Many aspects of the physiological state of trees are more or less related to the concentrations of two main groups of leaf photosynthetic pigments: chlorophylls and carotenoids. Therefore, their contents can be used as non-specific indicators of the actual tree physiological status, stress and the pre-visible tree damage. Variations in leaf biochemical composition affect foliar optical properties and can be assessed remotely using high spectral resolution data (hyperspectral data). These data were successfully used in earlier studies to detect vegetation stress and damage. However, only a few approaches have dealt with the use of hyperspectral remote sensing to assess vegetation physiological status on a regional scale. Moreover, little or no research has been done on assessing vegetation health while utilizing multi-date hyperspectral images. In this study, the method for assessing forest health conditions using optical indices retrieved from hyperspectral data was applied to the two temporal HyMap date sets acquired in 07/2009 and 08/2010 to detect stress for the Norway spruce forests in Sokolov, NW Bohemia, a region affected by long-term extensive mining. The classification results were validated by ground truth data (total chlorophyll-Cab, carotenoids-Car and carotenoid to chlorophyll ratio-Car/Cab) and were associated with the geochemical conditions of the forest stands. Forests play an important role in regulation of the global climate; moreover, they provide human beings with a whole range of ecosystem services. Forest health and ecosystem functioning have been influenced by anthropogenic activities and their consequences, such as air pollution, surface mining, heavy metal contamination, and other biotic and abiotic stress factors, which had an especially serious effect on central Europe. Many aspects of the physiological state of trees are more or less related to the concentrations of two main groups of leaf photosynthetic pigments: chlorophylls and carotenoids. Therefore, their contents can be used as non-specific indicators of the actual tree physiological status, stress and the pre-visible tree damage. Variations in leaf biochemical composition affect foliar optical properties and can be assessed remotely using high spectral resolution data (hyperspectral data). These data were successfully used in earlier studies to detect vegetation stress and damage. However, only a few approaches have dealt with the use of hyperspectral remote sensing to assess vegetation physiological status on a regional scale. Moreover, little or no research has been done on assessing vegetation health while utilizing multi-date hyperspectral images. In this study, the method for assessing forest health conditions using optical indices retrieved from hyperspectral data was applied to the two temporal HyMap date sets acquired in 07/2009 and 08/2010 to detect stress for the Norway spruce forests in Sokolov, NW Bohemia, a region affected by long-term extensive mining. The classification results were validated by ground truth data (total chlorophyll-Cab, carotenoids-Car and carotenoid to chlorophyll ratio-Car/Cab) and were associated with the geochemical conditions of the forest stands.
dcterms:title
Using multi-date high spectral resolution data to assess the physiological status of macroscopically undamaged foliage on a regional scale Using multi-date high spectral resolution data to assess the physiological status of macroscopically undamaged foliage on a regional scale
skos:prefLabel
Using multi-date high spectral resolution data to assess the physiological status of macroscopically undamaged foliage on a regional scale Using multi-date high spectral resolution data to assess the physiological status of macroscopically undamaged foliage on a regional scale
skos:notation
RIV/00216208:11310/14:10281638!RIV15-MSM-11310___
n3:aktivita
n15:I n15:P
n3:aktivity
I, P(7E10042), P(GA205/09/1989)
n3:cisloPeriodika
B
n3:dodaniDat
n12:2015
n3:domaciTvurceVysledku
n6:7380992 n6:9597018 n6:2361825 n6:5783267
n3:druhVysledku
n13:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
52446
n3:idVysledku
RIV/00216208:11310/14:10281638
n3:jazykVysledku
n14:eng
n3:klicovaSlova
Tree stress; Carotenoids; Chlorophyll; Image spectroscopy; Forest monitoring; Foliar biochemistry
n3:klicoveSlovo
n4:Tree%20stress n4:Image%20spectroscopy n4:Foliar%20biochemistry n4:Forest%20monitoring n4:Chlorophyll n4:Carotenoids
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[C36924E79B7C]
n3:nazevZdroje
International Journal of Applied Earth Observation and Geoinformation
n3:obor
n10:ED
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
5
n3:projekt
n16:7E10042 n16:GA205%2F09%2F1989
n3:rokUplatneniVysledku
n12:2014
n3:svazekPeriodika
27
n3:tvurceVysledku
Kopačková, Veronika Albrechtová, Jana Oulehle, Filip Lhotáková, Zuzana Mišurec, Jan
n3:wos
000329386000006
s:issn
0303-2434
s:numberOfPages
18
n17:doi
10.1016/j.jag.2013.09.009
n8:organizacniJednotka
11310