Orange fruits contain many materials such as oils in seeds which
have biological and nutritional values, due to that, physical and
chemical properties of orange seed oil (OSO) have been
determined, which extracted from two samples collected from two
areas (Al-ssisanyah and Al-jma'ashyah) which are different in
environmental factors.
The main aim of this study was to determine the effect of slope position on some
soil physico-chemical properties .The study was conducted on a pine forest soil , Tartous.
Soil samples were collected from top , mid and bottom slope positions at hor
izon- A and C
of top and mid slope positions and at horizon A,(B)and C of bottom slope positions .
Results showed a significant difference among the physico-chemical properties of top ,
mid and bottom slope soils . Bulk density of the top - slope (1.34 gcm-3) was the highest
followed by mid ( 1.31 gcm-3) and bottom slopes (1.27 g cm-3) .Conversely ,Organic
matter content (2.86%) ,electrical conductivity EC(0.20mmos/cm) , calcium(28.3
meq/100g) , magnesium(6.80 meq/100g) , Potassium (0.21 meq/100g), Soil pH ( 7.95) ,
clay content (38.43 %) and silt content (34.70%) were the highest at bottom slope followed
by mid and top- slopes , respectively . Soil A and C horizon of top and mid slope positions
and A ,(B)and C horizons of bottom slope positions were also significantly different in
their physical and chemical properties . Horizon A had the highest organic matter
,electrical conductivity , calcium , magnesium , silt contents and lower bulk
density,CaCO3, sand contents than both the (B) and C horizons of bottom slope and the C
horizon of top and mid slope .The deterioration in physico-chemical properties of top slope
as compared to mid and bottom slopes and that of A horizon as compared to C horizons
were presumed to be due to past soil erosion effect that removed the finer soil particles
including soil organic matter and other plant nutrient.
This research aims to study the distribution of Phytoplankton in four locations which have different environmental specifications, in addition to study some environmental factors of Alhaffeh Dam water that affect the distribution of the phytoplankt
on (Temperature ,BOD, DO, pH, NO3, NO2, NH4, PO4). Samples were collected from different locations of the Dam basin from June 2011 to May 2012 once or twice a month. (84) species of Phytoplankton were identified and were distributed as: (38) species of Chrysophyta, (36) species of Diatomophyceae, (2) species of Chrysophycea, (25) species of Chlorophyta, (20) species of Cyanophyta, (2) species of Pyrrhophyta, and (5) species of Euglenophyta. The results show apparent changes in physical and chemical properties of water during this study. This is the first study of the phytoplankton on the water of Alhaffeh Dam.
