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Register a new userدور نسب الخلط الفيزيائي للترب كطريقة لاستصلاح الترب الملوثة بالنفط الخام وأثره في بعض خواص التربة
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جامعة الفرات رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
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يعتبر النشاط الحيوي أهم المؤشرات الحيوية التي تتأثر في حالات تلوث التربة بالكيماويات بأشكالها المختلفة
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موقع جمعية حماية البيئة والتنمية المستدامة
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This research studies some soil properties formed on calcareous rocks under a natural plant cover of wide leaves (mainly: Quercus calliprinos and Quercus infectoria) in Banias region (63 – 234) meters height above sea level.
Firstly, 3 soi
l profiles in the studied area were done, then morphological characteristic, type of plant cover and Geographic Position System (GPS) were accomplished.
Samples were taken from profile horizons, then, physical and chemical properties were determined (structure, bulk and real densities, total calcium carbonate percent, organic matter content, action exchange capacity, exchangeable calcium and magnesium, and pH).
The profile depth ranged between low and medium (60 – 137) cm, the pH ranged between neutral and alkaline (7.1- 8.2), there was an increase in calcium carbonate content in the whole profile (17- 88%), and also increase of organic matter contents in the horizon (8- 12%). Due to high clay (18-74) % and organic matter content (8-12) %, the soils showed high cation exchange capacity (CEC) (21- 92 meq/100g). Exchangeable calcium was dominant on the surface of adsorption complex (17- 74 meq/100g), then magnesium in second stage (0.2- 6 meq/100g).
From a classification point, the soils were classified under the following orders:
Entisols, Mollisols, Inceptisols, which have profile types: A – AC – C, A – AR – R, and A – (B) – C.
Soil depth and its content of rocky pieces were varied according to relief degree, plant cover intensity, and parent rocks hardness. Most of soil properties are a parent material descendible, and the soils were slightly developed and recently formed.
This research aimed to study the impact of electronic promotion in
rising percentages of hotels occupancy.
Compacting hot mixes asphalt (HMA) at low temperatures or mixing it in the asphalt at high temperatures is a constant source of concern to researchers, as compacting and mixing at non-ideal temperatures leads to adverse results, which negatively affect the properties of asphalt concrete and lead to problems paving.
بهدف دراسة تأثير عمليات تحضير التربة وإدارة مخلفات المحاصيل في الجريان السطحي وكمية التربة المفقودة وفي بعض خصائص التربة , نفذت تجربة على تربة نسيجها طيني خلال الموسم 2013-2014 في منطقة معدل الانحدار فيها لا يزيد عن 10%باستخدام ثلاثة أنماط زراعية في كل من ظروف العواصف المطرية الطبيعية
The purpose of this research is to apply a mathematical program to
calculate water and chemical balance in unsaturated soils, under the
influence of different methods of irrigation, in order to monitor the
amount of vertical drainage of water insi
de the soil and choose a
irrigation method that can reduce the phenomenon of groundwater
pollution.
Three irrigation methods were tested with different fertilization
method. The study was conducted in the western part of Homs
Governorate (AlQusair orchards).
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