Anatomske posebnosti alepskega bora in pinije zaradi klimatskih anomalij

diplomsko delo - visokošolski strokovni študij

Miladin Jokić (Author), Željko Gorišek (Reviewer), Katarina Čufar (Mentor)

Abstract

Kambij dreves na semiaridnih območjih ima v enem letu lahko več obdobij aktivnosti in mirovanja, zato les lahko vsebuje zgradbene posebnosti kot so razlike v debelini celičnih sten znotraj branike. Preučevali smo branike v lesu in pogostost anatomskih anomalij pinije (Pinus pinea) in alepskega bora (Pinus halepensis) 2 semiaridnih rastišč (Guardamar in Daroca v Španiji). Predlagali smo naslednje tipe rastnih anomalij: (1) tip E (kasnemu lesu podobne celice se nahajajo v ranem lesu), (2) tip E+ (kasnemu lesu podobne celice se pojavijo ob začetku rastne sezone), (3) tip L (ranemu lesu podobne celice se pojavijo v kasnem lesu), (4) tip L+ (ranemu lesu podobne celice se pojavijo ob koncu rastne sezone, (5) tip M (lažna večkratna/multipla branika) in (6) tip N (nepopolna branika). Proučili smo tudi prehod med ranim in kasnim lesom, razločnost meje med branikami in prisotnost smolnih kanalov. Anomalije smo prikazali v slikovnem atlasu in v obliki diagramov frekvenčnih porazdelitev. Analiza odzivnih funkcij med kronologijami širin branik, širin ranega in kasnega lesa ter klimatskimi podatki (povprečne mesečne temperature in mesečne vsote padavin) je pokazala predvsem visok pozitiven vpliv padavin od predhodnega decembra do tekočega junija na širino branike ter na širino ranega in kasnega lesa pri obeh vrstah na obeh rastiščih. Ugotovili smo tudi nekaj odvisnosti, specifičnih za posamezno vrsto in rastišče. Delo je nastalo v sodelovanju med Univerzo v Ljubljani in Univerzo Alicante v Španiji, v okviru bilateralnega sporazuma o študentskih izmenjavah ERASMUS LLP.

Keywords

anatomija lesa;rani les;kasni les;Pinus pinea;Pinus halapensis;dendrokronologija;klima;

Data

Language:	Slovenian
Year of publishing:	2009
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[M. Jokić]
UDC:	630*811.1
COBISS:	1760905
Views:	1104
Downloads:	316
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Anatomy specifics of aleppo pine and stone pine related to climate anomalies
Secondary abstract:	In semiarid conditions, the cambium in trees may have several periods of activity and dormancy in the same year. This results in wood anatomical anomalies like intra-annual density fluctuations (IADF). Tree-rings and wood anomalies in stone pine (Pinus pinea) and Aleppo pine (Pinus halepensis) growing at two semiarid sites, Guardamar and Daroca in Spain, were studied. Based on the structure of growth rings the following types of wood anomalies were proposed: (1) type E (latewood-like cells within earlywood), (2) type E+ (latewood-like cells between earlywood and latewood of the previous tree-ring), (3) type L (earlywood-like cells within latewood), and (4) type L+(earlywood-like cells between latewood and earlywood of the next tree-ring),(5) type M (false multiple ring) and (6) type N (incomplete ring). In addition, the transition from early- to latewood, clearness of the tree-ring boundary and the presence of resin canals were investigated. The pictures of wood anomalies were presented and their frequencies in different calendar years shown for both sites and species. Response function analyses showed that tree-ring, early- and latewood widths were strongly positively correlated with precipitations from December to June in both species and sites. Some species and site-specific responses to climate were recorded. The work was completed in cooperation between the University of Ljubljana and the University of Alicante, Spain, in the frame of ERASMUS LLP bilateral agreement on student exchange.
Secondary keywords:	wood anatomy;earlywood;latewood;Pinus pinea;Pinus halapensis;dendrochronology;climate;
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Biotehniška fakulteta, Odd. za lesarstvo
Pages:	XV, 81 f., [13] f. pril.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;agriculture and related sciences and techniques;forestry;farming;wildlife exploitation;kmetijstvo ter sorodne vede in tehnologije;forestry;gozdarstvo;forest products and their utilization;gozdni proizvodi in njihova uporaba;
ID:	21705