The aesthetic and environmental values of a street are greatly influenced by the
selection of an appropriate arboreal species and the relation between its planted trees with
the different engineering elements of a street . Street trees play a signi
ficant role in forming
the architectural and aesthetic texture of the city. They, forther more, enhance material,
environmental and cultural aspects of the city. This paper aimes to analyze arboreal rows
in HALAB Street and to study their relation with the service and structural engineering
components Of that street . Moreover, the optimal situation of these street trees was
evaluated using (Li et al, 2011) equation.Results of this paper revealed prominent breaks in
the arboreal rows, and that these rows contain four tree species (Jacaranda mimosaefolia
Don., Ficus nitida L., Eucalyptus rostrata S., Melia azedrach L.), which served to furnish
the street with monotonic beauty and humility in botanic diversity. Findings showed
decrease in the optimal value of the two used botanic species where (Jacaranda) attained a
mark of 6.22/10 and (Ficus nitidia) 7/10 and (Eucalyptus) 7.28/10 and (Melia) 7.53/10.
Corresponding to the relation of trees to some street engineering elements, results indicated
inobservance of standard dimensions between planted trees and service elements. which
negatively influenced the aesthetic and position value of buildings’ and stores’ facets and
guiding signs and billboards on the one hand, and risk increase on pedestrians and vehicles
due to blocking vision of traffic signs and overlap of tree crowns with electricity and
lighting posts on the other hand.
This study was conducted in Syria Street, which connects between Yemen Square
and Republic Square in Latakia City. This paper cares to analyze arboreal rows in SYRIA
Street and to study their relation with the service and structural engineering com
ponents Of
that street . Moreover, the ideal state of these street trees was evaluated .Results of this
paper revealed, that the arboreal rows contain two botanic species (Ficus nitida L,
Jacaranda mimosaefolia Don.), which served to furnish the street with monotonic beauty
and humility in botanic diversity,and prominent breaks in these rows. Findings showed an
ideal decrease in the value of the two used botanic species where (Ficus nitidia) attained a
mark of 6.8/10 and (Jacaranda mimosaefolia) 6.34/10 . Corresponding to the relation of
trees to some street engineering elements, results indicated inobservance of standard
dimensions between planted trees and service elements. which negatively influenced the
aesthetic and position value of buildings’ and stores’ facets and guiding signs and
billboards on the one hand, and risk increase on pedestrians and vehicles due to blocking
vision of traffic signs and overlap of tree crowns with electricity and lighting posts on the
other hand.
This research aims at evaluating the effect of fire on the erosion of burned forest soils
after rainfall. The research was carried out during (2010/2011) in a pine forest near the
village of Ein Al-Jaouz at an altitude of 900m, north east Tartous g
overnorate. The forest
had a fire in October 2009.
Ten metal plots (2m2 each plot) were used to evaluate soil erosion, five plots in the
burned part of the forest and another five plots in the unburned part.
The runoff coefficient, soil erosion rate, soil pH and rate of some mineral elements
(Ca++, K+ , Mg++) were estimated and compared in the two parts.
This study showed that the runoff coefficient was three times as great on the burned
part as on the unburned part, and the rate of soil erosion was 7.22 Mg/ha in the burned part
and 0.1Mg/ha in the unburned part. This shows the impact of fire in increasing soil erosion
and runoff. This study also showed the difference in cation concentrations in the runoff
water between the two parts.
The study reveals the importance of protecting forests against fire. This is to limit
soil erosion and its economic and environmental consequences.
