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Age dependence of xylogenesis and its climatic sensitivity in Smith fir on the south-eastern Tibetan Plateau
ID
LI, Xiaoxia
(
Avtor
),
ID
Liang, Eryuan
(
Avtor
),
ID
Gričar, Jožica
(
Avtor
),
ID
Prislan, Peter
(
Avtor
),
ID
Rossi, Sergio
(
Avtor
),
ID
Čufar, Katarina
(
Avtor
)
URL - Predstavitvena datoteka, za dostop obiščite
http://treephys.oxfordjournals.org/content/early/2012/11/25/treephys.tps113.full.pdf+html
Galerija slik
Izvleček
An age effect on growth trends and climate/growth relationships of trees can possibly be discovered by analysing the seasonal dynamics of xylem development. The aims of this study, therefore, were to compare xylem formation of young (43 ± 4 years) and old (162 ± 26 years) Smith fir (Abies georgei var. smithii (Viguie & Gaussen) W. C. Cheng & L. K. Fu) trees in the Sygera Mountains, south-eastern Tibetan Plateau and, to identify the association between wood formation and climate. The seasonal radial growth dynamics of young and old trees was monitored on microcores collected at weekly intervals during two growing seasons. Transverse sections through phloem, cambium and outermost xylem of 9–12 µm thickness were observed with a light microscope under bright field and polarized light to follow the cambial activity and differentiation of the developing xylem. Young trees were characterized by an earlier onset of xylogenesis, a longer growing season and a higher growth rate, resulting in a higher number of xylem cells. Both young and old trees responded fast to changes of the minimum air temperature, confirming that this factor was dominant by controlling Smith fir growth on the south-eastern Tibetan Plateau.
Jezik:
Angleški jezik
Ključne besede:
dendroklimatologija
,
rast lesa
,
Abies georgei var. smithii
Vrsta gradiva:
Znanstveno delo
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
BF - Biotehniška fakulteta
Leto izida:
2013
Št. strani:
Str. 48-56
Številčenje:
Vol. 33, št. 1
PID:
20.500.12556/RUL-69767
UDK:
630*561.24:630*630*111.8
ISSN pri članku:
0829-318X
COBISS.SI-ID:
2076553
Datum objave v RUL:
10.07.2015
Število ogledov:
1719
Število prenosov:
399
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Tree physiology
Skrajšan naslov:
Tree physiol.
Založnik:
Heron Pub.
ISSN:
0829-318X
COBISS.SI-ID:
27866624
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