اتجاهات التغير في سلاسل الهطولات السنوية والفصلية في بعض مواقع المنطقة الساحلية في سورية
Abstract
تم في هذه الدراسة تقدير التغير في الكميات السنوية والفصلية للهطل للفترة (2006-1971) في ثلاث محطات ميتيورولوجية (اللاذقية، طرطوس وصافيتا) تقع في المنطقة الساحلية من سورية، باستخدام اختباري الانحدار الخطي ومعامل سبيرمان لارتباط الرتب.
أظهرت النتائج اتجاهاً نحو تناقص المعدلات السنوية للهطل في محطتي اللاذقية وطرطوس، ونحو تزايدها في محطة صافيتا. وعلى المستوى الفصلي، لوحظ اتجاه نحو تناقص معدلات الهطل لفصل الشتاء في محطة اللاذقية، والربيع في جميع المحطات. في حين لوحظ اتجاه نحو تزايد معدلات الهطل لفصل الشتاء في محطتي طرطوس وصافيتا، والخريف في جميع المحطات. على الرغم من أن جميع هذه الاتجاهات الخطية السالبة والموجبة على كلا المستويين السنوي والفصلي ليست معنوية إحصائياً عند مستوى 5%، إلا أنه يمكن أن يكون لها تأثيرات حادة على موارد المياه، ونظم جريان الأنهار ونجاح المحاصيل البعلية في مناطق الدراسة.
In this study, trends of annual and seasonal precipitation time series for the period of (1971–2006) were analysed for three meteorological stations (Lattakia, Tartous and Safita) located in the coastal region of Syria, by linear regression and Spearman's rho tests.
The results showed a decreasing trend of annual precipitation in Lattakia and Tartous stations and increasing trend in Safita station. At the seasonal time scale, a decreasing trends of winter precipitation in Lattakia station and of spring precipitation in all stations were observed. While an increasing trends of winter precipitation in Tartous and Safita stations and of autumn precipitation in all stations were observed. Although, all of these negative and positive linear trends, both at the annual and seasonal time scales are not statistically significant at 5% level, but they can have severe effects on water resources, rivers regimes and success of rain-fed crops in the study areas.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.