Brutia pine tree grows radially and gives one ring per year, the width of
this ring is determined by environmental conditions especially by climatic
ones. Dendroclimatology concerns with studying the response of tree rings
to climatic conditions.
In order to study the radial growth of brutia pine
planted 1975 in Heir Brafa, Tartous, Syria.
This study aimed to estimate the level of air pollution in some portable heavy metals
in dust quarries by needles of Pinus brutia Ten. as biomonitor In site of Kfardabeel Stand-
Jableh. The samples of dust and leaves were collected at the end of Ju
ly in 2016, Atomic
absorption spectrophotometer was used to determine the amounts of Lead, Zinc, Nickel
(ppm, dry weight).
The average of accumulated metals in the needles were estimated: (Pb= 45.57 ppm,
Zn= 13.64 ppm, Ni= 7.64 ppm), while their amounts in the dust were done as following:
(Pb= 66.1 ppm, Zn= 15.8 ppm, Ni= 19.6 ppm). The results showed that the studied site is
polluted with Pb and Ni whereas Zn is in the natural range. a strong correlation between
heavy metals amounts in the needles and their amounts in the trapped dust (r= 0.98) was
detected, also regression equations have explained the variations in accumulation of
studied metals in relation to the accumulated dust on needles as following: 40% Pb, 40%
Zn, 20% Ni. Consequently results confirmed the possibility of detecting the atmospheric
Pb, Zn, Ni pollution in the studied site using P. brutia Needles as a biomonitor.
This research aimed to study the natural regeneration of Pinus brutia in Qurdaha
region, and to determine the most important factors affecting the regeneration. 42 circular
samples were taken, the area of each sample was 400m2. The following measur
ements were
taken: geographic coordinates of each sample's centre, altitude, aspect, the slope, forest
litter thickness, the proportion of gravels, stones and rocks, tree, bushes and herb cover.
Forest inventories were achieved using Braun-Blanquet method. Which, the number of
sample seedlings, the seedling height, seedling diameter, the seedling age, burning trees
and alive trees of Pinus brutia were registered. The results showed a significant negative
effect of slope and a significant positive effect of herb cover, where the percentage of data
classification by the model was reached 74.4%, while the Nagelkerke R2value was 37%.
The negative effect of the slope comes from increasing the risks of soil erosion and the loss
in their nutritional elements. In contrast, the positive effect of herbal coverage is the
contribution to reducing the risks of summer drought that can be affect the seedlings.
This study aimed to estimate the height of the Pinus brutia trees in Kafardabeel
forested area- Jableh. Eight mathematical forms (Michailoff, Prodan, Petterson, Parabel,
Korsun, Logarithmic, Freese, Chapman-Richards) were used.
In 2015, the diamet
er of 330 trees at breast height (dbh) were measured, and only
heights of 165 of them were taken. Measurements were carried out in 15 sample plots all
over the study area to cover site variations in altitude, exhibition, gradient and density.
Data were split into two parts: 116 tree (70%) were used for model constrction, while the
remaining trees 49 tree (30%) were used for model validation.
The Results showed that, Parabel had the highest value for the Coefficient of
Determination (R²=0.53) and the lowest value of the relative accuracy (mx%) (17.665%).
That means it was the the best model to calculate tree height using diameter at breast
height. This model can help foresters in forest management planning for study area and
similar sites.
The aim of this study was to determine some physical, chemical properties and
microbiological density (fungi –bacteria) of a Pine forest soil in the coastal region
(Mehwarti forest, Banias), where Pinus brutia is the main dominant plant.
Three soi
l profiles were carried out and their morphological characteristics were
determined, the thickness of accumulated organic residues and GPS data were also
recorded.
For physical and chemical analysis, samples from each profile horizon were taken
and air- dried, whereas for the microbial diversity analysis, samples were taken twice in
autumn and spring, and transported and stored at 4C.
The results showed that the studied soil belongs to Alfisol Order with A -Bt – C
profile types. Our results also showed that the soil depth was (85-100cm) and the texture
was clay with a high porosity in all studied soil horizons.
The content of calcium carbonate in the studied horizons was closely similar and
increased with soil depth, whereas the pH ranged between 6.8 and 7.9. The results
indicated that the organic matter decreased significantly with soil depth that affected the
microorganisms density which behave in the same manner. This decreas was very clear in
the first horizon especially in spring.
The aim of this research was to investigate the changes of vegetation and
regeneration of plant species in Kassab forests after 1991 fire. The study area is
located in the North western part of Syria in the middle of Al-Baier and Al-
Bassit forest
s to the North of Latakia. Thirty five plant surveys (Relevé) were
carried out in the study area during 2009 according to Braun-Blanquet method
included the burned area and the nearby locations of non-burned forest. By
comparing the plant surveys (Relevé), results showed good regeneration of
most plant species that were in the study area before the fire. Three forms of
vegetation were distinguished in the study area: 1 - The areas where dominance
is shared between Pinus brutia Ten. and Quercus cerris L. subsp. pseudocerris
(Boiss.) Chalabi. 2 - Areas dominated by Pinus brutia Ten. with accompanying
species from Eu-Mediterranean zone and supra Mediterranean zone. 3 – Areas
where Pinus brutia Ten. and Quercus cerris L. subsp. pseudocerris (Boiss.)
Chalabi are partly or completely absent, and dominated by shrubs and grass
species.
