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The Use of Change Vector Analysis Techniq Ue to Monitor Land Use/Land Coverin Lattakia City

استخدام تقنية شعاع التغيير الطيفي لمراقبة تغيرات غطاء الأرض و استخدامات الأراضي في مدينة اللاذقية

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 Publication date 2015
and research's language is العربية
 Created by Shamra Editor




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This paper presents the Change vector analysis (CVA) approach for detecting and characterizing radiometric change in multispectral remote sensing data sets The dynamic changes of the land use/land cover were studied in lattakia city by using two ETM-Landsat-7 scenes, for the years 2000, and 2010, and the spatial resolution of those two images was 15 m. The CVA algorithm has been applied and produced two ‘channels’ of output change information multispectral change magnitude and change vector direction in land use/land cover during this period. Two models have been built within ERDAS Imagine 8.6 software to perform the algorithm and evaluate the positive and negative changes and analyze the the human impacts on the land use/ land cover change. This method can be applied to various fields of study in order to generate maps represent the continuous development of land use and land cover. These maps can be significantly useful for the regional and urban planning and natural resource management, in light of the great expansion of urban areas at the expense of green spaces and uncontrolled use of the land.


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Research summary
يستعرض هذا البحث كيفية دراسة تغير غطاء الأرض واستخدامات الأراضي باستخدام تقنيات الاستشعار عن بعد بالاعتماد على طريقة تحليل شعاع التغيير الطيفي (CVA). تم دراسة ديناميكية تغير غطاء الأرض واستخدامات الأراضي في محافظة اللاذقية باستخدام صورتين فضائيتين من القمر الصناعي لاندسات7-ETM، الأولى تعود إلى العام 2000 والثانية إلى العام 2010، بدقة 15 متر لكلا الصورتين. تم تطبيق طريقة تحليل شعاع التغيير الطيفي لدراسة كمية التغيير واتجاه التغيير الحاصل لغطاء الأرض واستخدامات الأراضي خلال هذه الفترة الزمنية من خلال بناء نموذجين رياضيين ضمن بيئة برنامج معالجة الصور الرقمية ERDAS Imagine 8.6، وتقييم تلك التغيرات سواء كانت إيجابية أم سلبية، وتحليل أثر العوامل البشرية في إحداث التغير في الغطاء الأرضي. يمكن تطبيق هذا البحث على مناطق مختلفة باستخدام صور فضائية بتواريخ مختلفة بهدف إنتاج خرائط تراقب التطور المستمر للغطاء الأرضي واستخدامات الأراضي، مما يساعد في التخطيط الإقليمي وإدارة الموارد الطبيعية، والتطوير في ظل التوسع الملحوظ للمناطق الحضرية على حساب المساحات الخضراء، والاستخدام الزراعي غير المنظم للأرض.
Critical review
دراسة نقدية: يعد البحث خطوة مهمة في استخدام تقنيات الاستشعار عن بعد لدراسة التغيرات في غطاء الأرض واستخدامات الأراضي. ومع ذلك، يمكن توجيه بعض النقد البناء لتحسين العمل المستقبلي. أولاً، يمكن توسيع نطاق الدراسة لتشمل فترات زمنية أطول ومناطق جغرافية أوسع لتقديم صورة أكثر شمولية عن التغيرات. ثانياً، يجب مراعاة تأثير العوامل المناخية والطبيعية الأخرى التي قد تؤثر على دقة النتائج. ثالثاً، يمكن تحسين النماذج الرياضية المستخدمة بإدخال متغيرات إضافية لتحسين دقة التنبؤات. وأخيراً، يجب تعزيز التعاون بين الباحثين والمؤسسات الحكومية لضمان تطبيق النتائج بشكل فعال في التخطيط الإقليمي وإدارة الموارد الطبيعية.
Questions related to the research
  1. ما هي التقنية المستخدمة في البحث لدراسة تغير غطاء الأرض واستخدامات الأراضي؟

    تم استخدام تقنية تحليل شعاع التغيير الطيفي (CVA) لدراسة تغير غطاء الأرض واستخدامات الأراضي.

  2. ما هي الفترة الزمنية التي تم دراستها في البحث؟

    تم دراسة الفترة الزمنية الممتدة من عام 2000 إلى عام 2010.

  3. ما هي الأدوات البرمجية المستخدمة في تحليل البيانات؟

    تم استخدام برنامج ERDAS Imagine 8.6 لتحليل البيانات وبناء النماذج الرياضية.

  4. ما هي الفائدة العملية من تطبيق نتائج هذا البحث؟

    يمكن استخدام نتائج هذا البحث في التخطيط الإقليمي وإدارة الموارد الطبيعية، والتطوير في ظل التوسع الحضري، والحد من الاستخدام غير المنظم للأراضي الزراعية.


References used
MALILA,W.A.An Approach For Detectiog Forest Changes With Landsat. Machine Processing Engineering & Remote Sensing, 1980, 326-335
RODRIGO, L. B; YOSIO, S. E; HERMANN, H, J. A Change Vector Analysis Technique To Monitior Land Use/ Land Cover In Sw Brazilian Amazon. Pocedia Environmental Sciences, 2002,8-15
XIAOLU, S. Change Detection Using Change Vector Analysis From Landsat TM Images In Wuhan. Elsevier Ltd, 2011,238-244
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