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The natural environment of Panicumturgidum Forssk at the eastern province of Saudi Arabia

البيئة الطبيعية لعشيرة الثمام (Panicum turgidum Forssk) في المنطقة الشرقية بالمملكة العربية السعودية

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 Publication date 2003
and research's language is العربية
 Created by Shamra Editor




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The present study aimed to evaluate the ecological and phytosociological status of panicum turgidum under the environmental conditions of the eastern province of Kingdom of Saudi Arabia. 48 stands (each of 25 m2, i.e. 1x25 m) were randomly selected from three locations (Riyadh, Ogair and Damam) which represent the optimum habitat of P. turgidum. The obtained results showed that the dominated plant species associated with P. turgidum were Cyperus conglomertus, Eragrostis barrelieri, Haloxylon persicum, Haloxylon salicornicum, Heliotropium bocciferum, Launaea mucronata, Leptadenia pyrotechnica, Monsonia nevia and Plantago ovata. P. turgidum, and is recommended as an important grazing vegetation in deep sand soil. Soil salinity (ECe), soil PH, CaCO3, organic matter, soil texture (Sand %) and soil moisture (FC) were the most limiting soil properties affecting P. turgidum distribution naturally at the studied area.


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Research summary
تهدف هذه الدراسة إلى تقييم الوضع البيئي والنباتي لعشيرة التمام (Panicum turgidum) في المنطقة الشرقية من المملكة العربية السعودية. تم اختيار 48 موقعًا عشوائيًا من ثلاث مناطق (الرياض، العقير، الدمام) والتي تمثل البيئة المثلى لنمو هذا النبات. أظهرت النتائج أن الأنواع النباتية المصاحبة لعشيرة التمام تشمل Cyperus conglomertus، Eragrostis barrelieri، Haloxylon persicum، Haloxylon salicornicum، Heliotropium bocciferum، Launaea mucronata، Leptadenia pyrotechnica، Monsonia nevia، وPlantago ovata. أثبتت الدراسة أن نبات التمام ينمو بنجاح في الأراضي الرملية ويتحمل الجفاف وملوحة التربة. أظهرت نتائج تحليل الانحدار المرحلي أن خصائص التربة مثل الأس الهيدروجيني، محتوى كربونات الكالسيوم، المادة العضوية، نسبة الرمل، الرطوبة، ودرجة التوصيل الكهربائي كانت الأكثر تأثيرًا في توزيع نباتات التمام في مناطق الدراسة.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لفهم البيئة الطبيعية لعشيرة التمام في المنطقة الشرقية من المملكة العربية السعودية، ولكن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الأفضل تضمين المزيد من المواقع لزيادة دقة النتائج. ثانياً، لم يتم التطرق بشكل كافٍ إلى تأثير التغيرات المناخية على نمو وتوزيع نبات التمام، وهو عامل مهم يجب أخذه في الاعتبار. أخيرًا، كان من الممكن أن تكون الدراسة أكثر شمولية إذا تم تضمين تحليلات إضافية حول تأثير الأنشطة البشرية مثل الرعي الجائر على توزيع ونمو هذه النباتات.
Questions related to the research
  1. ما هي الأنواع النباتية المصاحبة لعشيرة التمام في المنطقة الشرقية من المملكة العربية السعودية؟

    الأنواع النباتية المصاحبة تشمل Cyperus conglomertus، Eragrostis barrelieri، Haloxylon persicum، Haloxylon salicornicum، Heliotropium bocciferum، Launaea mucronata، Leptadenia pyrotechnica، Monsonia nevia، وPlantago ovata.

  2. ما هي الخصائص التربة الأكثر تأثيرًا في توزيع نباتات التمام في مناطق الدراسة؟

    الخصائص الأكثر تأثيرًا تشمل الأس الهيدروجيني، محتوى كربونات الكالسيوم، المادة العضوية، نسبة الرمل، الرطوبة، ودرجة التوصيل الكهربائي.

  3. كيف يؤثر الجفاف وملوحة التربة على نمو نبات التمام؟

    نبات التمام ينمو بنجاح في الأراضي الرملية ويتحمل الجفاف وملوحة التربة، مما يجعله نباتًا مناسبًا للبيئات القاسية.

  4. ما هي التوصيات التي قدمتها الدراسة بخصوص استخدام نبات التمام؟

    توصي الدراسة باستخدام نبات التمام كغطاء نباتي مهم في الأراضي الرملية العميقة نظرًا لتحمله للجفاف وملوحة التربة.


References used
Abbadi, G. A. andM. A. El-Sheikh (2002). Vegetation analysis of Failaka island (Kuwait). Journal of Arid Environments, 50: 153 – 165
AbdEl-Ghani, M. M. (2000). Floristics and environmental relations in two extreme desert zones of Western Egypt. Global Ecology & Biography 9, 499-516
Abou-Deya, I.B. (1984). Studies on distribution and adaptation of range plants in Sinai. Ph.D Thesis, Fac. Of Agric., Ain Shams Univ., Cairo, Egypt
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