Fedaa Wanos*⁽¹⁾, Zuheir Shater⁽¹⁾ And Ali Thabeet⁽²⁾

(1). Department of Forestry and Ecology, Faculty of Agriculture, Tishreen University, Lattakia, Syria.

(2). Department of Forestry and Ecology, Faculty of Agriculture, Aleppo University, Aleppo, Syria.

(*Corresponding author. Fedaa wanos. E-mail: fedaawanos@gmail.com)

Received:  28/10/2021                   Accepted: 26/06/2022

Abstract: 

This research aimed to evaluate the relationships between climate factors and rings- width of Cupressus sempervirens var horizontalis. For that, One sample was selected throughout the natural distribution of Cupressus sempervirens in (Abo- klyfon village) in the eastern slope of Coastal Mountains in AL-ghab region in November 2019. Cores per 7 trees were sampled. Dendroclimatology techniques were applied on them. Ring – widths refer to the rings of  tree or annual rings, Ring – width results from new growth of active cambium, clear ring results from changing of growth in seasons, then one ring refer to one year of tree’s life. The results of this research showed length of the time–series of Cupressus sempervirens̛’s ring – width among trees ranging from 96 to 265 years. Average annual growth of the first period was 2.66mm, followed by 56 years of rapid growth, After that 43 years of stable growth. followed by 77years of slow growth. Then a greater slowdown has seen in the average of annual growth being 0.99mm and a large variation in Ring – widths, Sample’s Trees formed many missing and narrow rings, In addition, There are (9) positive and (5) negative Pointer years.

Keywords: Cupressus sempervirens, Dendroclimatology, Ring – Width , AL-Ghab, Eastern slope of the Syrian Coastal Mountain Chain.

Full paper in Arabic:  pdf