پایش و تحلیل الگوی سیمای سرزمین استان لرستان و فرآیند تغییر آن در محیط GIS

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد محیطزیست، دانشکدۀمنابع طبیعی و محیط زیست، دانشگاه ملایر، ملایر، همدان

2 استادیار گروه محیطزیست، دانشکدۀ منابع طبیعی، دانشگاه تربیت مدرس، نور، مازندران

3 استادیار گروه محیطزیست، دانشکدۀ منابع طبیعی و محیط زیست، دانشگاه ملایر، ملایر، همدان

چکیده

هدف تحقیق حاضر بررسی تغییرات پوشش سرزمین لرستان طی سال‌های 1989 تا 2013 و به‌کارگیری نتایج حاصل در بررسی الگوی سیمای سرزمین و فرآیند تغییر آن است. از 5 سنجة الگوی سیمای سرزمین شامل آنتروپی نرمال‌سازی‌شده، تراکم حاشیه، مساحت لکه، فشردگی لکه و غنای نسبی برای کمی‌سازی الگوی سیمای سرزمین استفاده شد و وقوع 10 فرآیند تغییر سیمای سرزمین شامل حذف، تجمع، دوتکه‌شدن، ایجاد، کاهش اندازه، سوراخ‌شدگی، تغییر جهت، تغییر شکل، گستردگی و تکه‌تکه‌شدن لکه‌ها بررسی شد. نتایج نشان داد ‌که از سال 1989 تا 2013 حدود 7/5166 کیلومترمربع از جنگل‌ها نابود شده و وسعت مناطق مسکونی 71/47 کیلومترمربع افزایش یافته و نرخ جنگل‌زدایی در این دوره 68/1 درصد در سال بوده است. نتایج بررسی الگوی سیمای سرزمین لرستان نشان داد که آنتروپی نرمال‌سازی‌شده بین 00189/0 تا 313/0، غنای نسبی بین 19/11 تا 82/22 درصد، تراکم حاشیه بین‌ 002/0 تا 44/0 متربرهکتار، مساحت لکه‌ها بین 04/92 تا 7/193171 هکتار و فشردگی لکه بین 006/0 تا 568/0 لکه در 100 هکتار می‌باشد. 4 فرآیند حذف، تجمع، ایجاد و دوتکه شدن در منطقه رخ داده است. نتایج این تحقیق می‌تواند در سیاست‌گذاری‌های دولت و نیز اتخاذ تمهیدات مدیریتی مورد استفاده قرار گیرد.

کلیدواژه‌ها

عنوان مقاله [English]

Monitoring and Analysis of Landscape Pattern of Lorestan Province and its Change Process in GIS Environment

نویسندگان [English]

  • Mohsen Japolghy 1
  • Mehdi Gholamalifard 2
  • kamran shayesteh 3

1

2 Noor

3

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