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Register a new userStudying Natural Vegetation after 1991 Fire in Kassab – North of Lattakia - Syria
دراسة الغطاء النباتي الطبيعي بعد حريق 1991 م في منطقة كسب شمال اللاذقية – سورية
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هدف هذا البحث إلى دراسة تغيرات الغطاء النباتي الطبيعي و تجدد الأنواع النباتية في منطقة كـسب شمال اللاذقية بعد حريق عام 1991م. تقع منطقة الدراسة في الجزء الشمالي الغربي من سورية وسـط غابات الباير و البسيط شمال اللاذقية. أُجري 35 كشفاً جردياً اجتماعياً نباتياً Relevé خلال عـام 2009 وفق طريقة Blanquet-Braun ،شملت المنطقة المحروقة و مواقع قريبة غير محروقـة مـن غابـات كسب. بمقارنة الكشوف النباتية أظهرت النتائج تجدد معظم الأنواع النباتية التي كانت سائدة قبل الحريق، و تم تمييز ثلاثة أشكال للغطاء النباتي في منطقة الدراسة: 1 -مناطق تكون فيها السيادة مشتركة ما بين Quercus cerris L. subsp. العـزري شـبه و الـسنديان Pinus brutia Ten. البروتي الصنوبر Chalabi.) Boiss (pseudocerris ، و 2 -مناطق يسود فيها الصنوبر البروتي مع مرافقاته من الطابق المتوسطي الحقيقي و العلوي، و 3 -مواقع يغيب فيها الصنوبر البروتي و السنديان شبه العـزري كليـاً أو جزئياً و تسود فيها شجيرات و أنواع عشبية.
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 forests 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.
References used
Agee, J. K. (1993). Fire ecology of Pacific Northwest forests. Island Press, Washington, DC
Barbero, M., Chalabi, M. N., Nahal, I., Quezel, P. (1976). Les formations a conifers mediterraneen en Syrie littorale. Ecologia Mediterranea II, Marseille, PP. 87-99
Barton, A. M. (1998). Pines versus oaks: effects of fire on the composition of Madrean forests in Arizona. Forest Ecology and Management 120, 143-156
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The research aimed to study vegetation change detection of Lattakia province by
using remote sensing techniques, By applicating Normalized Differences Vegetation Index
(NDVI) due to what these techniques had from quickly, accuracy, and completely.
In
addition to saving efforts and money. that change detection methods have showed by
applicating it on Sentinel2 images the plant situation, it's area and distribution in the
studied area.
In addition to knowing plant's cover changes through time passing. Putting geo
databases which benefit in knowing plant situation, and the periodicity supervision for it's
changes.
The yearly and monthly changes of vegetation cover have been studied in Lattakia
province, By making change detection for plants cover of march between (2016-2017).
Then making change detection between march and august of 2017. It was observed that
there were no big changes, Whether increasing or decreasing for plants cover when
studying the yearly changes. While there was big decreasing of plants cover at western
plain areas of province when studying the monthly changes between march and august due
to raising of temperatures. And big increasing of vegetation in high areas.
The Libyan pastures have been subjected to continuous overgrazing, which
inflicts a great deal of damage to the vegetation cover, on both quantitative and
qualitative levels, as well as to the live-stock production.
To clarify the effect of protection on some characteristics of the natural
vegetation cover, two regions have been studied: A protected region and
another adjacent unprotected region, which is subjected to irregular grazing.
The landslides and avalanches formations represent serious
danger on the constructions. They interfere with Tectonic conditions
to constitute a constructive system in some cases. Therefore appear
the importance of this study, which focused on the
tectonic role of
these phenomenon in Al Bassit area, NW. Syria, where different
deposits, mostly volcano- sedimentary of Ophiolitic complex. The
field executed studies and their analysis have permit to determine
the lithological and tectonic factors which have affecting the region.
Also the study of slope slip and characterizations have been studied
and an important comparative tables are proposed to study globally
and locally these landslides, and serve as a model for future studies
to prevent the risks of these slips.
This research was conducted in laboratory of Nematology in the Center of Scientific
Agricultural Research in Lattakia, to detection of Entomopathogenic Nematodes (EPNs) in
Citrus Orchards soils in Lattakia governorate.
A total of 66 composite soil
samples were collected from Citrus orchards during (2016-
2017). Entomopathogenic nematodes (EPNs) were recovered from soil samples by the
insect baiting technique, using seventh instar larvae of the Greater wax moth Galleria
mellonella (Lepidoptera: Pyralidae). Infective juveniles (IJs) were collected from G.
mellonella cadavers using the method of White (1927).
EPN isolates were identified based on morphometric methods. Eight isolates were
identified as Heterorhabditis bacteriophora Poinar 1976 (Ord. Rhabditida: Fam.
Heterorhabditidae) .
Positive soil samples ratio was 12.12% of total samples, where EPNs isolates were
extracted from regions (Al-Bassa, Al-Magreet, Al-Shamia, Gio, Al-Kharnoba, Al-Sorsokia,
Fideo, Borj Al-Qasab)0 The soil textures of the EPNs positive samples were (sandy loam,
silt loam, loamy sand, loamy clay sand, clay) with ( pH 6.34- :0.5) and (1.99- 4.82) g\100g
organic content. The electrical conductivity of the nematode positive soils varied from 0.33
to 0.82 ds/m.
Climate change is the major global challenge facing water resources managers
because of its impacts on many life fields beginning with agriculture activities to economic
- social regions. In this study, drought in the eastern north of Syria have be
en investigated
(Hasake, Rakka, DerAzzor, Bokmal, Kameshli) using a set of data containing precipitation
data for period from 2000 to 2010, and MODIS time series images for the same period.
This study assure that 2008/2009 described as drought period in the study area, and the
NDVI maps ,which we have, give us an idea about the vegetation status and patterns in the
study area. The study clearly show that NDVI and rainfall was found to be highly
correlated in Rakka with P- Value= 0.003; and medium correlated in the other stations with
P- Value > 0.05.
Results of this study verify needing to use this index (NDVI), along with
precipitation data, in drought monitoring in the eastern north region of Syria. So that,. It
would help managers in making decisions to face drought in this area.
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