This study aims to compare the ability of three plant species (Eucaleptus camaldulensis L., Acacia cyanophylla L. and Ricinus communis L.) on the accumulation of cadmium (Cd) resulting from the different existing pollution sources in the study area (
Abdul Qader Al Husseini Street - Latakia) especially resulting from traffic. The samples were collected from different parts (leaves, wood, bark) of the species mentioned in addition to samples of the soil, then the samples were processed and analyzed by atomic absorption spectrophotometer.
The results showed a difference in the content of cadmium in the studied species, ranged between (0.25 mg/kg) and (0.42 mg/kg) dry weight, where the highest content in Ricinus wood (0.42 mg/kg) and then Eucalyptus wood (0.4 mg/kg) and minimum content in Acacia wood (0.32mg/kg). Ricinus and Acacia showed high ability to accumulate cadmium reaching Bioconcentration factor (BF=1.33) for Ricinus and (BF=1.13) for Acacia
In this research, the occurrence of Glycaspis brimblecombei Moore (Hemiptera:
Psylloidea: Aphalaridae) was recorded for the first time on Eucalyptus camaldulensis
(Myrtaceae) leaves in Syria. Where collected from the leaves and shoots of young and
old
trees of eucalyptus from Lattakia province in June 2015 in three sites. The morphological
characters examined and compared with the specialized keys for this species. The results
showed that the highest average for psyllid egg masses was in Bustan AlBasha on the
lower surface of the leaves and amounted to 5.80±2.00 mass, had the highest average
number of eggs in the same location and on the lower surface also reached 65.80±47.97
eggs / Leaf. The highest average number of nymphs under the Lerp in Bustan AlBasha on
the lower surface of the leaves as stage as follows: L1: 18.4±9.51, and L2: 9.60±3.32, and
L3: 6.40±0.92, while L4: 2.80±1.74 on the upper and lower surfaces. The highest average
number of psyllid nymphs without white Lerp was for the first nymph L1: In Shahd
Alaasal site on the Lower surface 3.40±0.87, and L2: at the same previous location on the
upper surface of 5.80±2.43, and L3: in Bustan AlBasha site on the Lower surface
2.80±0.58, and L4: in Shahd Alaasal and Bustan AlBasha 0.20±0.20 on the upper and
lower surface. The highest average number of adult in the site Bustan AlBasha on the
upper surface of 1.40±1.16, and the lowest in the site Shahd Alaasal on the upper surface
of 0.20±0.20.
This study aims to recognize some growth characteristics of
Eucalyptus camaldulensis and the effect of climate factors on trees
growth and development. Negative trends were detected in annual
rainfall according to meterological data taken from Homs station.
القدرة التراكمية للأوكاليبتوس المنقاري والعفص الشرقي لبعض العناصر الثقيلة في شارع الشاطئ الاأزرق- مدينة اللاذقية
