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Ecological factors affecting the kernel productivity of stone pine (Pinus pinea L.) in different forest sites of Syria

أثر العوامل البيئية في إنتاجية لب بذور شجر الصنوبر الثمري (.L pinea Pinus) في مناطق حراجية مختلفة بسورية

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 Publication date 2012
and research's language is العربية
 Created by Shamra Editor




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This study was carried out at three different forest sites in Syria in order to determine the effect of changing rainfall, temperature and soil on kernel productivity of stone pine (Pinus pinea L.)> these sites included: Jabal Alnabi Mata, (Tartous province, L1), Dahr Alkhoser (Homs province, L2) and E′en Jron site (Idleb province, L3). Results showed that kernel productivity of stone pine per tree was 236.3, 252.8, 143 g per tree, and 177, 162.3, and 86.98 kg per hectare in L1, L2, and L3, respectively. These differences were attributed due to the variation in the composition, textured and fertility of the soil available in the three locations studied. It was concluded that trees of stone pine grow better and superior in Kernel productivity in humid and super-humid bioclimatic zone.


Artificial intelligence review:
Research summary
تستعرض هذه الدراسة أثر العوامل البيئية المختلفة على إنتاجية لب بذور شجر الصنوبر التُمري (Pinus Pinea L.) في ثلاثة مواقع حراجية مختلفة في سوريا: جبل النبي متى بطرطوس، ضهر القصير بحمص، وعين جرون بإدلب. أظهرت النتائج تباينًا في الإنتاجية بين المواقع الثلاثة، حيث بلغت إنتاجية الشجرة من لب البذور 236.3 غرام في جبل النبي متى، و252.8 غرام في ضهر القصير، و143 غرام في عين جرون. كما بلغت إنتاجية الهكتار من لب البذور 177 كغ/هكتار في جبل النبي متى، و162.3 كغ/هكتار في ضهر القصير، و86.98 كغ/هكتار في عين جرون. أظهرت الدراسة أن نوعية التربة تلعب دورًا كبيرًا في تحديد الإنتاجية، حيث كانت التربة الحامضية والرملية الغنية بالفوسفور والفقيرة بالكالسيوم هي الأنسب لنمو الصنوبر التُمري. كما أن المناخ الرطب والرطب جدًا كان له تأثير إيجابي على الغلة البذرية، في حين أن الطابق البيومناخي شبه الرطب أعطى غلات غير وفيرة.
Critical review
دراسة نقدية: على الرغم من أن الدراسة قدمت معلومات قيمة حول تأثير العوامل البيئية على إنتاجية لب بذور شجر الصنوبر التُمري، إلا أنها لم تتناول بعض الجوانب الهامة بشكل كافٍ. على سبيل المثال، لم يتم التطرق بشكل مفصل إلى تأثير التغيرات المناخية المستقبلية على الإنتاجية، وهو موضوع ذو أهمية كبيرة في ظل التغيرات المناخية العالمية. كما أن الدراسة اعتمدت على بيانات من ثلاث مواقع فقط، مما قد لا يعكس التنوع البيئي الكامل في سوريا. بالإضافة إلى ذلك، كان من الممكن تحسين الدراسة من خلال استخدام تقنيات تحليلية أكثر تطورًا لزيادة دقة النتائج.
Questions related to the research
  1. ما هي المواقع الثلاثة التي شملتها الدراسة؟

    شملت الدراسة ثلاثة مواقع حراجية مختلفة في سوريا: جبل النبي متى بطرطوس، ضهر القصير بحمص، وعين جرون بإدلب.

  2. ما هو تأثير نوعية التربة على إنتاجية لب بذور الصنوبر التُمري؟

    أظهرت الدراسة أن التربة الحامضية والرملية الغنية بالفوسفور والفقيرة بالكالسيوم هي الأنسب لنمو الصنوبر التُمري وإنتاجيته.

  3. كيف يؤثر المناخ على إنتاجية لب بذور الصنوبر التُمري؟

    أظهرت الدراسة أن المناخ الرطب والرطب جدًا له تأثير إيجابي على الغلة البذرية، في حين أن الطابق البيومناخي شبه الرطب يعطي غلات غير وفيرة.

  4. ما هي إنتاجية الهكتار من لب بذور الصنوبر التُمري في المواقع الثلاثة؟

    بلغت إنتاجية الهكتار من لب بذور الصنوبر التُمري 177 كغ/هكتار في جبل النبي متى، و162.3 كغ/هكتار في ضهر القصير، و86.98 كغ/هكتار في عين جرون.


References used
Alfredsson, H., L. M. Condron, M. Clarholm, M. R. Davis. 1998. Change in soil acidity and organic matter following the establishment of conifers on former grassland in New Zealand, Forest Ecology and Management, Elsevier, 112:245-252
Bravo, F., M. Luca, R. Mercurio, M. Sidari and A. Muscolo. 2010. Soil and forest productivity: a case study from Stone pine (Pinus pinea L.) stands in Calabria (Southern Italy), iForest - Biogeosciences and Forest, 4: 25-30
Bravo-Oviedo, A. and G. Montero. 2005. Site index in relation to edaphic variables in stone pine (Pinus pinea L.) stands in south west Spain. Ann. For. Sci. 62: 61-72
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