Do you want to publish a course? Click here

Effect of slope position on somephysico - chemical properties of a pine forest soil ,Tartous, Syria

تأثير مناطق المنحدر على بعض الخصائص الفيزيائية و الكيميائية لتربة غابة صنوبرية, طرطوس , سورية

1667   2   40   0 ( 0 )
 Publication date 2017
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

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 horizon- 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.


Artificial intelligence review:
Research summary
تهدف هذه الدراسة إلى تحديد تأثير مناطق المنحدر على بعض الخصائص الفيزيائية والكيميائية للتربة في غابة صنويرية بطرطوس، سوريا. تم جمع عينات التربة من قمة، وسط، وأسفل المنحدر وتحليلها لتحديد الكثافة الظاهرية، محتوى المادة العضوية، الناقلية الكهربائية، محتوى الكالسيوم، المغنزيوم، البوتاسيوم، الطين، والسلت. أظهرت النتائج اختلافات هامة بين الخصائص الفيزيائية والكيميائية لمناطق المنحدر المختلفة. كانت الكثافة الظاهرية أعلى في قمة المنحدر وأقل في أسفل المنحدر، بينما كانت محتويات المادة العضوية والعناصر الغذائية الأخرى أعلى في أسفل المنحدر. يُعزى هذا التباين إلى تأثير انجراف التربة الذي أدى إلى نقل الجزيئات الناعمة والمغذيات النباتية إلى أسفل المنحدر. توصي الدراسة بضرورة الحفاظ على الغطاء النباتي الطبيعي في مناطق قمة المنحدر لتقليل مخاطر الانجراف.
Critical review
دراسة نقدية: تُعد هذه الدراسة خطوة مهمة لفهم تأثير الانحدار على خصائص التربة، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الممكن أن تكون الدراسة أكثر شمولاً إذا تم تضمين مناطق أخرى ذات خصائص منحدر مختلفة لمقارنة النتائج. ثانياً، لم يتم التطرق بشكل كافٍ إلى تأثير العوامل المناخية الموسمية على نتائج الدراسة. ثالثاً، كان من الممكن استخدام تقنيات تحليلية أكثر تطوراً للحصول على نتائج أكثر دقة. وأخيراً، يُفضل إجراء دراسات طويلة الأمد لمراقبة التغيرات في الخصائص الفيزيائية والكيميائية للتربة على مر الزمن.
Questions related to the research
  1. ما هي الأهداف الرئيسية للدراسة؟

    تهدف الدراسة إلى تحديد تأثير مناطق المنحدر على بعض الخصائص الفيزيائية والكيميائية للتربة في غابة صنويرية بطرطوس، سوريا.

  2. ما هي النتائج الرئيسية التي توصلت إليها الدراسة؟

    أظهرت النتائج أن الكثافة الظاهرية كانت أعلى في قمة المنحدر وأقل في أسفل المنحدر، بينما كانت محتويات المادة العضوية والعناصر الغذائية الأخرى أعلى في أسفل المنحدر.

  3. ما هي التوصيات التي قدمتها الدراسة؟

    توصي الدراسة بضرورة الحفاظ على الغطاء النباتي الطبيعي في مناطق قمة المنحدر لتقليل مخاطر الانجراف.

  4. ما هي العوامل التي يُعزى إليها التباين في الخصائص الفيزيائية والكيميائية للتربة؟

    يُعزى التباين إلى تأثير انجراف التربة الذي أدى إلى نقل الجزيئات الناعمة والمغذيات النباتية إلى أسفل المنحدر.


References used
AANDAHL, A.R. The characterization of slope positions and their influence on total nitrogen content of a few virgin soils of Western Iowa. Soil Science Society of America Proceedings 13:,1948, 449-454
ASSOULINE S, BEN-HUR M. Effects of rainfall intensity and slope gradient on the .dynamics of interrill erosion during soil surface sealing. Catena 66:,2006, 211-220
ASTM (Am. Soc. Test. Master). Procedures for testing soils. American Society For Testing and Materials, Philadelphia ,1958
rate research

Read More

The aim of this study was to determine some physical, chemical properties and microbiological density (fungi –bacteria) of a Pine forest soil in the coastal region (Mehwarti forest, Banias), where Pinus brutia is the main dominant plant. Three soi l profiles were carried out and their morphological characteristics were determined, the thickness of accumulated organic residues and GPS data were also recorded. For physical and chemical analysis, samples from each profile horizon were taken and air- dried, whereas for the microbial diversity analysis, samples were taken twice in autumn and spring, and transported and stored at 4C. The results showed that the studied soil belongs to Alfisol Order with A -Bt – C profile types. Our results also showed that the soil depth was (85-100cm) and the texture was clay with a high porosity in all studied soil horizons. The content of calcium carbonate in the studied horizons was closely similar and increased with soil depth, whereas the pH ranged between 6.8 and 7.9. The results indicated that the organic matter decreased significantly with soil depth that affected the microorganisms density which behave in the same manner. This decreas was very clear in the first horizon especially in spring.
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.
The effect of clay soil treatment with two levels of tobacco west compost and organic fertilizer (15 and 30 ton/ h), in addition to mineral fertilizer treatment, with three replicates of each treatment on some physical properties (Aggregate size di stribution, main weight diameter, bulk density and porosity) and chemical properties (Organic carbon, humic and volvic acid and humification index for big and small soil aggregates was studied. The results showed that tobacco west compost and organic fertilizer were effective in increment of soil content of organic carbon, which reached (20 and 26%) for organic fertilizer, and (39 and 45%) for compost compared to the control, conducing to ameliorate soil physical properties, where The main weight diameter, stable aggregate rate and soil porosity were increased. Whereas, bulk density decreased significantly in both treatments compared to the control. Compost treatment affect soil physical properties more than organic fertilizer.Mineral fertilizer decreased soil content of organic carbon compared to the control. Humic and volvic acids contents were between 2.12 and 74.3 mg/kg aggregates in the control,and compost treatments alternatively in macro aggregates (> 2mm). Wile, volvic acid values were between 0.93 mg/kg in control for small aggregates (< 0.25), and 3.17 mg/kg aggregates in mineral fertilizer treatment for (0.25 – 2) aggregates. Humification index values were less than 2 in macro aggregates, while it was bigger than 2 in small aggregates.
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 research was carried out in the center of the Research and Improvement of Sheep and Camels in salamiah. The study was conducted on 9 female camels, within semi-open barns, semiintensive care system, and the camels were fed on mixtures of barl ey, vetch and some concentrated fodder, Fodder mixtures were determined to suit the nutritional needs of the physiological and age-related condition of the study. The herd was also applied to the preventive vaccination system according to the preventive immunity program.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا